Volvo Vehicle Models Volvo S90 1997-1998
Volvo Vehicle Models Volvo S90 1997-1998 Torque Specifications
Complete Volvo Vehicle Models Volvo S90 1997-1998 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.
Updated
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
Prevention:
Always use a calibrated torque wrench and follow specifications exactly.
Incorrect Torque Sequence
Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.
Prevention:
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
Prevention:
Clean and inspect all threads before assembly. Use new thread locker if specified.
Reusing TTY Bolts
Torque-to-yield bolts are designed to stretch and must not be reused.
Prevention:
Always replace TTY bolts with new ones. They are single-use only.
Dry vs. Lubricated
Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.
Prevention:
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Range: 2-25 ft-lbs
Small fasteners, delicate components
Torque Wrench (3/8" Drive)
Range: 10-100 ft-lbs
Most common automotive fasteners
Torque Wrench (1/2" Drive)
Range: 30-250 ft-lbs
Large fasteners, wheels
Angle Gauge
Torque-to-yield (TTY) bolts
Torque Wrench Care
- Calibrate annually or after 5,000 clicks
- Store at lowest setting
- Keep clean and lubricated
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2.9l I6 Engine
Torque specifications for 2.9L-I6 Engine
2.9l I6 Engine
Torque specifications for 2.9L-I6 Engine
Cylinder Head
1 Cylinder Head Bolts
M12 x 1.5
1
Cylinder Head Bolts
M12 x 1.5
Torque Specification
1. 16 ft-lbs (22 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure even clamping force.
2 Valve Cover Bolts
M6 x 1.0
2
Valve Cover Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before torquing.
Crankshaft Assembly
1 Main Bearing Bolts
M10 x 1.25
1
Main Bearing Bolts
M10 x 1.25
Torque Specification
1. 59 ft-lbs (80 N·m)
Important Notes
Replace bolts during reassembly to ensure proper torque retention.
2 Connecting Rod Nuts
M8 x 1.0
2
Connecting Rod Nuts
M8 x 1.0
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use new nuts during reassembly to ensure proper torque retention.
Timing System
1 Camshaft Sprocket Bolt
M10 x 1.25
1
Camshaft Sprocket Bolt
M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the camshaft is properly aligned before torquing.
2 Timing Belt Tensioner Bolt
M8 x 1.25
2
Timing Belt Tensioner Bolt
M8 x 1.25
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Ensure the timing belt is properly tensioned before torquing.
Body
Torque specifications for Body
Body
Torque specifications for Body
Suspension
1 Strut/Shock Absorber Mounting Bolts
M10 x 1.25
1
Strut/Shock Absorber Mounting Bolts
M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure proper alignment of the strut or shock absorber during installation.
2 Control Arm Bolts
M12 x 1.5
2
Control Arm Bolts
M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the control arm is properly seated before torquing.
3 Ball Joint Nut
M10 x 1.25
3
Ball Joint Nut
M10 x 1.25
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure the ball joint is properly seated in the steering knuckle.
4 Sway Bar Link Nut
M8 x 1.25
4
Sway Bar Link Nut
M8 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the sway bar link is properly aligned before torquing.
Steering
1 Tie Rod End Nut
M10 x 1.25
1
Tie Rod End Nut
M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the tie rod end is properly seated in the steering knuckle.
2 Steering Gear/Rack Bolts
M12 x 1.5
2
Steering Gear/Rack Bolts
M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the steering rack is properly aligned with the subframe.
Wheels
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Always use a star pattern when tightening lug nuts.
Fuel System
1 Fuel Tank Strap Bolts
M8 x 1.25
1
Fuel Tank Strap Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the fuel tank is properly seated before torquing.
2 Fuel Filler Neck Bolts
M8 x 1.25
2
Fuel Filler Neck Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the fuel filler neck is properly aligned with the fuel tank.
Electrical
1 Battery Terminal Nuts
M6 x 1.0
1
Battery Terminal Nuts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the battery terminals are clean and free of corrosion before tightening.
Safety
1 Seat Belt Anchorage Bolts
M10 x 1.25
1
Seat Belt Anchorage Bolts
M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the seat belt anchorage is properly aligned with the body structure.
Body
1 Hood Hinge Bolts
M8 x 1.25
1
Hood Hinge Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the hood is properly aligned before torquing.
2 Door Hinge Bolts
M8 x 1.25
2
Door Hinge Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the door is properly aligned before torquing.
3 Bumper Mounting Bolts
M8 x 1.25
3
Bumper Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the bumper is properly aligned before torquing.
4 Roofliner/Overhead Console Bolts
M6 x 1.0
4
Roofliner/Overhead Console Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the roofliner or overhead console is properly aligned before torquing.
Chassis
1 Subframe Mounting Bolts
M12 x 1.5
1
Subframe Mounting Bolts
M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the subframe is properly aligned with the body before torquing.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Brake Caliper System
1 Brake Caliper Bolts
M10 x 1.25
1
Brake Caliper Bolts
M10 x 1.25
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure the caliper is properly aligned before tightening.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Ensure the bracket is seated properly against the steering knuckle or axle.
Brake Rotor Drum System
1 Brake Disc/Drum Retaining Bolts
M8 x 1.25
1
Brake Disc/Drum Retaining Bolts
M8 x 1.25
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure the rotor or drum is seated flush against the hub before tightening.
Wheel Attachment System
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Always torque lug nuts in a star pattern to ensure even clamping force.
Brake Hydraulic System
1 Brake Hose Banjo Bolt
M10 x 1.0
1
Brake Hose Banjo Bolt
M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the sealing washers are in good condition and properly seated.
2 Brake Master Cylinder Mounting Bolts
M8 x 1.25
2
Brake Master Cylinder Mounting Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the master cylinder is properly aligned with the brake booster.
Brake Booster System
1 Brake Booster Mounting Bolts
M8 x 1.25
1
Brake Booster Mounting Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the booster is properly aligned with the firewall.
Brake Pedal System
1 Brake Pedal Assembly Bolts
M8 x 1.25
1
Brake Pedal Assembly Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the pedal operates smoothly after tightening.
Abs System
1 ABS Sensor Mounting Bolts
M6 x 1.0
1
ABS Sensor Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is properly seated against the hub or knuckle.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Flywheel And Transmission
1 Flywheel Bolts
M10 x 1.25
1
Flywheel Bolts
M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the flywheel is properly aligned before torquing.
2 Transmission Mounting Bolts
M10 x 1.25
2
Transmission Mounting Bolts
M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the transmission is properly aligned before torquing.
3 Transmission Bellhousing Bolts
M10 x 1.25
3
Transmission Bellhousing Bolts
M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the transmission and engine are properly aligned before torquing.
4 Torque Converter Bolts
M8 x 1.25
4
Torque Converter Bolts
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the torque converter is properly seated before torquing.
Drive Axles And Cv Joints
1 Drive Axle/Half Shaft Bolts
M10 x 1.25
1
Drive Axle/Half Shaft Bolts
M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the axles are properly seated before torquing.
2 CV Joint/Axle Nut
M24 x 1.5
2
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
185 ft-lbs (250 N·m)
Important Notes
Ensure the CV joint is properly seated before torquing.
Driveshaft And Differential
1 Propeller/Drive Shaft Bolts
M10 x 1.25
1
Propeller/Drive Shaft Bolts
M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the driveshaft is properly aligned before torquing.
2 Differential Mounting Bolts
M12 x 1.75
2
Differential Mounting Bolts
M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the differential is properly aligned before torquing.
3 Rear Axle Hub Bolts
M12 x 1.75
3
Rear Axle Hub Bolts
M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the rear axle hubs are properly seated before torquing.
Fluid System Plugs
1 Transmission Fluid Drain/Fill Plug
M12 x 1.75
1
Transmission Fluid Drain/Fill Plug
M12 x 1.75
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the plug threads are clean and undamaged before torquing.
2 Differential Drain/Fill Plug
M12 x 1.75
2
Differential Drain/Fill Plug
M12 x 1.75
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the plug threads are clean and undamaged before torquing.
3 Transfer Case Drain/Fill Plug
M12 x 1.75
3
Transfer Case Drain/Fill Plug
M12 x 1.75
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the plug threads are clean and undamaged before torquing.
Electrical
Torque specifications for Electrical
Electrical
Torque specifications for Electrical
Ignition System
1 Ignition Coil Bolt
M6 x 1.0
1
Ignition Coil Bolt
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Ensure the ignition coil is properly seated before tightening.
Starting System
1 Starter Motor Mounting Bolts
M10 x 1.5
1
Starter Motor Mounting Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the starter motor is properly aligned with the flywheel before tightening.
Charging System
1 Alternator Mounting Bolts
M10 x 1.5
1
Alternator Mounting Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the alternator is properly aligned with the drive belt before tightening.
Battery System
1 Battery Terminal Nuts
M6 x 1.0
1
Battery Terminal Nuts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Ensure the battery terminals are clean and free of corrosion before tightening.
Grounding System
1 Ground Strap Bolts
M6 x 1.0
1
Ground Strap Bolts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar components. Ensure the grounding points are clean and free of corrosion.
Fuse And Relay System
1 Fuse Box Mounting Bolts
M6 x 1.0
1
Fuse Box Mounting Bolts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar components. Ensure the fuse box is securely mounted to prevent vibration damage.
Engine Control System
1 ECU Mounting Bolts
M6 x 1.0
1
ECU Mounting Bolts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar components. Ensure the ECU is securely mounted to prevent vibration damage.
2 Crankshaft Position Sensor Mounting Bolt
M6 x 1.0
2
Crankshaft Position Sensor Mounting Bolt
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar components. Ensure the sensor is properly aligned before tightening.
3 Camshaft Position Sensor Mounting Bolt
M6 x 1.0
3
Camshaft Position Sensor Mounting Bolt
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar components. Ensure the sensor is properly aligned before tightening.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Egr System
1 EGR Valve Bolts
M8 x 1.25
1
EGR Valve Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the EGR valve gasket is properly seated before tightening.
Exhaust Manifold
1 Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Follow the manufacturer's torque sequence to avoid warping the manifold.
2 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
2
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the gasket is properly seated before tightening.
Exhaust Pipe
1 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the exhaust pipe is properly aligned before tightening.
2 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
2
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the catalytic converter is properly aligned before tightening.
Intake System
1 Throttle Body Bolts
M6 x 1.0
1
Throttle Body Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the throttle body gasket is properly seated before tightening.
2 Intake Manifold Bolts
M8 x 1.25
2
Intake Manifold Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Follow the manufacturer's torque sequence to avoid warping the manifold.
Emissions Sensors
1 Oxygen Sensor (O2 Sensor) Mounting Nut
M12 x 1.25
1
Oxygen Sensor (O2 Sensor) Mounting Nut
M12 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the sensor is properly seated before tightening.
2 Mass Air Flow (MAF) Sensor Mounting Screws
M5 x 0.8
2
Mass Air Flow (MAF) Sensor Mounting Screws
M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the MAF sensor is properly seated before tightening.
3 Evaporative Emissions (EVAP) Canister Purge Valve Bolts
M6 x 1.0
3
Evaporative Emissions (EVAP) Canister Purge Valve Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the EVAP purge valve is properly seated before tightening.
4 Exhaust Gas Temperature (EGT) Sensor Mounting Nut
M10 x 1.25
4
Exhaust Gas Temperature (EGT) Sensor Mounting Nut
M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the EGT sensor is properly seated before tightening.
Exhaust
Torque specifications for Exhaust
Exhaust
Torque specifications for Exhaust
Exhaust Manifold Headers
1 Exhaust Manifold/Headers to Engine Block Bolts
M10 x 1.5
1
Exhaust Manifold/Headers to Engine Block Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure bolts are tightened in a cross pattern to evenly distribute pressure.
2 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
2
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure bolts are tightened in a cross pattern to prevent warping.
Exhaust Pipes
1 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent leaks.
2 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
2
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure bolts are tightened evenly to maintain emission control efficiency.
3 Muffler to Exhaust Pipe Bolts
M10 x 1.5
3
Muffler to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure bolts are tightened evenly to reduce noise and maintain flow.
Exhaust Support
1 Exhaust Hanger Bolts
M8 x 1.25
1
Exhaust Hanger Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure bolts are tightened securely to prevent movement.
2 Exhaust Heat Shield Bolts
M6 x 1.0
2
Exhaust Heat Shield Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated torque value based on M6 bolt size. Ensure heat shield is securely mounted.
Fuel
Torque specifications for Fuel
Fuel
Torque specifications for Fuel
Fuel Delivery System
1 Fuel Rail Bolts
M8 x 1.25
1
Fuel Rail Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensures a leak-free seal and prevents fuel pressure loss.
2 Fuel Injector Bolts
M6 x 1.0
2
Fuel Injector Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures proper sealing and prevents fuel leaks.
3 Fuel Pump Mounting Bolts
M6 x 1.0
3
Fuel Pump Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures the pump is securely mounted and prevents fuel leaks.
Fuel Tank System
1 Fuel Tank Strap Bolts
M10 x 1.5
1
Fuel Tank Strap Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures the tank is securely mounted and prevents movement or leaks.
2 Fuel Filler Neck Bolts
M8 x 1.25
2
Fuel Filler Neck Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures a secure connection and prevents fuel leaks or vapor escape.
3 Fuel Tank Drain Plug
M12 x 1.5
3
Fuel Tank Drain Plug
M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures a leak-free seal and prevents fuel loss.
Fuel Filter System
1 Fuel Filter Bolt/Nut
M8 x 1.25
1
Fuel Filter Bolt/Nut
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures a leak-free seal and maintains fuel system integrity.
2 Fuel Line Fittings
M10 x 1.5
2
Fuel Line Fittings
M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures leak-free connections and maintains fuel system pressure.
Fuel Pressure Regulation
1 Fuel Pressure Regulator Bolts
M6 x 1.0
1
Fuel Pressure Regulator Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures the regulator is securely mounted and maintains correct fuel pressure.
2 Fuel Tank Sender Unit Bolts
M6 x 1.0
2
Fuel Tank Sender Unit Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures a secure and leak-free connection for the fuel level sender unit.
Hvac
Torque specifications for Hvac
Hvac
Torque specifications for Hvac
Compressor Mounting
1 Compressor Mounting Bolts
M12 x 1.5
1
Compressor Mounting Bolts
M12 x 1.5
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Proper torque is essential to prevent damage to the compressor and surrounding components.
Condenser Mounting
1 Condenser Mounting Bolts
M10 x 1.25
1
Condenser Mounting Bolts
M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on general industry standards. Consult the vehicle's repair manual for specific torque values.
Evaporator Mounting
1 Evaporator Mounting Bolts
M8 x 1.25
1
Evaporator Mounting Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on general industry standards. Consult the vehicle's repair manual for specific torque values.
Refrigerant Line Fittings
1 Refrigerant Line Fittings
M12 x 1.5
1
Refrigerant Line Fittings
M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Proper torque ensures a leak-tight seal and prevents refrigerant leaks.
Refrigerant Line Clamps
1 Refrigerant Line Clamp Bolts
M6 x 1.0
1
Refrigerant Line Clamp Bolts
M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general industry standards. Consult the vehicle's repair manual for specific torque values.
Heater Core Mounting
1 Heater Core Mounting Bolts
M8 x 1.25
1
Heater Core Mounting Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on general industry standards. Consult the vehicle's repair manual for specific torque values.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Front Suspension
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
2 Control Arm Bolts
M16 x 1.5
2
Control Arm Bolts
M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
3 Upper Control Arm Bushing Bolts
M12 x 1.25
3
Upper Control Arm Bushing Bolts
M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Actual torque specification may vary depending on the manufacturer's recommendations.
4 Lower Control Arm Bushing Bolts
M12 x 1.25
4
Lower Control Arm Bushing Bolts
M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Actual torque specification may vary depending on the manufacturer's recommendations.
Steering System
1 Ball Joint Nut
M18 x 1.5
1
Ball Joint Nut
M18 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
2 Tie Rod End Nut
M16 x 1.5
2
Tie Rod End Nut
M16 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
3 Sway Bar Link Nut
M14 x 1.5
3
Sway Bar Link Nut
M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
4 Steering Gear/Rack Bolts
M16 x 1.5
4
Steering Gear/Rack Bolts
M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Stabilizer Bar and Coil Spring
1 Stabilizer Bar Mounting Bolts
M14 x 1.5
1
Stabilizer Bar Mounting Bolts
M14 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Actual torque specification may vary depending on the manufacturer's recommendations.
2 Coil Spring Mounting Bolts
M12 x 1.25
2
Coil Spring Mounting Bolts
M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Actual torque specification may vary depending on the manufacturer's recommendations.
Tg 81 Transmission
Torque specifications for Tg 81 Transmission
Tg 81 Transmission
Torque specifications for Tg 81 Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.5
1
Transmission Mounting Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the transmission is properly aligned before tightening.
Oil Pan
1 Transmission Oil Pan Bolts
M6 x 1.0
1
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use a new gasket when reinstalling the oil pan.
Drain Fill Plugs
1 Transmission Drain Plug
M12 x 1.5
1
Transmission Drain Plug
M12 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Use a new crush washer when reinstalling the drain plug.
2 Transmission Fill Plug
M12 x 1.5
2
Transmission Fill Plug
M12 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Use a new O-ring when reinstalling the fill plug.
Drive Axle
1 Drive Axle/Half Shaft Bolts
M12 x 1.5
1
Drive Axle/Half Shaft Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the axle is properly seated before tightening.
Propeller Shaft
1 Propeller/Drive Shaft Bolts
M12 x 1.5
1
Propeller/Drive Shaft Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the drive shaft is properly aligned before tightening.
Cv Joint
1 CV Joint/Axle Nut
M24 x 1.5
1
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
185 ft-lbs (250 N·m)
Important Notes
Ensure the CV joint is properly seated before tightening.
Torque Converter
1 Torque Converter Bolts
M10 x 1.25
1
Torque Converter Bolts
M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Torque specification is estimated based on similar components.
Bellhousing
1 Transmission Bellhousing Bolts
M12 x 1.5
1
Transmission Bellhousing Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure proper alignment between the engine and transmission.
Shift Linkage
1 Transmission Shift Linkage Bolts
M8 x 1.25
1
Transmission Shift Linkage Bolts
M8 x 1.25
Torque Specification
16.5 ft-lbs (22 N·m)
Important Notes
Torque specification is estimated based on similar components.
Cooling Lines
1 Transmission Cooling Line Fittings
M10 x 1.25
1
Transmission Cooling Line Fittings
M10 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque specification is estimated based on similar components.
Output Shaft Seal
1 Transmission Output Shaft Seal Retainer Bolts
M6 x 1.0
1
Transmission Output Shaft Seal Retainer Bolts
M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Torque specification is estimated based on similar components.
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
Loose Components
Symptoms:
- Rattling or vibration noises
- Visible movement in components
- Uneven panel gaps
Solutions:
- Clean threads and mounting surfaces
- Replace damaged fasteners
- Apply proper torque in sequence
- Use thread locker if specified
Stripped Fasteners
Symptoms:
- Unable to achieve proper torque
- Fastener spins freely
- Visible thread damage
Solutions:
- Use thread repair kit if appropriate
- Install thread insert (HeliCoil)
- Replace component if threaded hole is damaged
- Upgrade to higher grade fastener if recommended
Overtightened Components
Symptoms:
- Cracked or deformed parts
- Broken fasteners
- Compressed gaskets or seals
Solutions:
- Replace damaged components
- Use new fasteners
- Follow proper torque sequence
- Verify correct torque specifications
Diagnostic Steps
Visual inspection, torque verification, thread assessment
Diagnostic Steps
Visual inspection, torque verification, thread assessment
1
Visual Inspection
Inspect the affected area for any visible signs of damage or wear
- Check for cracks or deformation
- Look for signs of excessive wear
- Verify proper fastener installation
2
Torque Verification
Verify the torque applied to the fasteners
- Check the torque wrench calibration
- Verify the torque specification
- Compare the applied torque to the specification
3
Thread Assessment
Assess the condition of the threads
- Check for signs of thread damage
- Verify the thread type and size
- Check for proper thread engagement
Prevention Guidelines
Best practices, maintenance tips, tool care
Prevention Guidelines
Best practices, maintenance tips, tool care
Best Practices
- Always follow the recommended torque specification
- Use the correct type and size of fasteners
- Verify the torque wrench calibration regularly
Maintenance Tips
- Regularly inspect the affected area for signs of wear or damage
- Replace damaged or worn-out components promptly
- Keep the work area clean and organized
Tool Care
- Regularly clean and maintain the torque wrench
- Store the torque wrench in a dry and secure location
- Verify the torque wrench calibration before each use
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What IS the recommended torque for the lug nuts on my 1997 Volvo s90?
Q1
What IS the recommended torque for the lug nuts on my 1997 Volvo s90?
Tighten the lug nuts to 100 ft-lbs (130 Nm) using a torque wrench. Refer to the Volvo service manual for specific tightening patterns and sequences.
Q2 IS there a torque specification for the spark plugs on a 1998 Volvo s90?
Q2
IS there a torque specification for the spark plugs on a 1998 Volvo s90?
Yes, spark plugs should be tightened to 18 ft-lbs (25 Nm) using a torque wrench. Ensure the threads are clean and lightly lubricated before installation.
Q3 How do I properly tighten the oil drain plug on my 1997 s90?
Q3
How do I properly tighten the oil drain plug on my 1997 s90?
Use a torque wrench to tighten the oil drain plug to 25 ft-lbs (35 Nm). Replace the washer or O-ring on the drain plug before reinstallation.
Q4 What IS the correct torque for the transmission pan bolts on a 1998 Volvo s90?
Q4
What IS the correct torque for the transmission pan bolts on a 1998 Volvo s90?
Tighten the transmission pan bolts to 8 ft-lbs (10 Nm) using a torque wrench. Ensure the bolts are tightened evenly and sequentially.
Q5 What tools are recommended for torque applications on my s90?
Q5
What tools are recommended for torque applications on my s90?
Use a calibrated torque wrench for accurate and controlled tightening of bolts and nuts. Inspect and calibrate your torque wrench regularly to ensure its accuracy.
Q6 Where can I find the official Volvo torque specifications for my 1997-1998 s90?
Q6
Where can I find the official Volvo torque specifications for my 1997-1998 s90?
Refer to the Volvo service manual or consult with an authorized Volvo dealership for the latest and most accurate torque specifications.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
Temperature can significantly impact torque values and fastener behavior
Cold Weather
Effects:
- Increased material brittleness
- Higher torque required due to thread contraction
- Reduced thread lubricant effectiveness
Recommendations:
- Allow components to warm to room temperature when possible
- Consider using winter-grade thread lubricants
- Check torque values more frequently during winter months
Hot Weather
Effects:
- Thermal expansion of components
- Decreased friction in threads
- Accelerated lubricant breakdown
Recommendations:
- Check torque when components are at normal operating temperature
- Use temperature-resistant thread lockers
- Consider re-torquing after heat cycles
Humidity and Corrosion
Covers: Rust Prevention, Salt Exposure, Moisture Control
Humidity and Corrosion
Covers: Rust Prevention, Salt Exposure, Moisture Control
Moisture and corrosion can affect fastener integrity and torque values
High Humidity
Effects:
- Accelerated corrosion formation
- Reduced friction coefficient
- Potential thread seizing
Prevention:
- Use corrosion-resistant fasteners
- Apply appropriate anti-seize compounds
- Maintain proper protective coatings
Salt Exposure
Effects:
- Rapid corrosion development
- Thread damage
- Seized fasteners
Prevention:
- Regular underbody washing
- Use of sacrificial anodes where appropriate
- Application of protective coatings
Seasonal Maintenance
Spring, Summer, Fall, and Winter maintenance schedules
Seasonal Maintenance
Spring, Summer, Fall, and Winter maintenance schedules
Spring
- Inspect for winter damage
- Clean and protect exposed fasteners
- Check torque on critical components
Summer
- Monitor heat-affected components
- Check expansion-related loosening
- Inspect cooling system mounts
Fall
- Prepare for winter conditions
- Apply corrosion protection
- Verify all fasteners are properly torqued
Winter
- More frequent inspection of critical fasteners
- Check for salt damage
- Monitor suspension component torque
Related Resources
Tools, service procedures, and technical bulletins
Recommended Tools
Digital Torque Wrench (10-100 Nm)
Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the s90.
- Digital display for accurate readings
- Audible alarm when target torque IS reached
- Multiple units (Nm, ft-lb, in-lb)
- Reversible ratcheting mechanism
Service Procedures
Technical Service Bulletins
Legal Disclaimer
Important information about using this content
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General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
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We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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