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Wrangler YJ Drivetrain Torque Specs

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Wrangler YJ Cooling System Torque Specs

Typically these specs aren’t going to be needed unless you are replacing a water pump, thermostat, or fan.

Description

Specification

Fan Clutch To Water Pump Bolts (2.5L)

15-22 ft-lbs

Water Pump Attaching Bolts (2.5L)

13 ft-lbs

Fan Clutch To Water Pump Bolts (4.0L/4.2)

18 ft-lbs

Water Pump Attaching Bolts (4.0L/4.2)

9-18 ft-lbs

Thermostat Housing Bolts

13 ft-lbs

Fan To Fan Clutch Nuts

18 ft-lbs

Wrangler YJ Fuel System Torque Specs

TBI stands for Throttle Body Injection, MPI stands for Multi-Point Injection. Your Wrangler with either have a Carburetor, TBI, or MPI for its fuel delivery.

Description

Specification

Mechanical Fuel Pump Mounting Bolts

13-19 ft-lbs

Carburetor To Intake Manifold Mounting Nuts

13-19 ft-lbs

(TBI) Throttle Body Mounting Nuts

16 ft-lbs

(MPI) Throttle Body Mounting Nuts

108 in-lbs

Wrangler YJ Manual Transmission Torque Specs

This table includes specs for several manual transmissions. Unless indicated otherwise, each spec is used for all manual transmissions in YJ Wranglers.

Description

Specification

Drain/Fill Plug AX-4/5

32.5 ft-lbs

Drain Fill Plug AX-1500

25 ft-lbs

Drain/Fill Plug NV3550

14-20 ft-lbs

Clutch Housing To Engine Bolts 3/8"

27 ft-lbs

Clutch Housing To Engine Bolts 7/16"

43 ft-lbs

Clutch Housing To Engine Bolts M12

55 ft-lbs

Shift Lever Cover Bolts AX 4/5

15-13 ft-lbs

Shift Lever Cover Bolts BA 10/5

17 ft-lbs

Shift Lever Cover Bolts NV3550

75 in-lbs

Clutch Master Cylinder Bolts (1987-1994)

19 ft-lbs

Clutch Master Cylinder (1995)

26 ft-lbs

Pressure-Plate To Flywheel Bolts (4.2L/4.0L)

40 ft-lbs

Wrangler YJ Automatic Transmission Torque Specs

This table includes specs for several automatic transmissions. Unless indicated otherwise, each spec is used for all automatic transmissions in YJ Wranglers.

Description

Specification

Filter Screws 30RH/32RH

35 in-lbs

Filter Screws 42RLE

45 in-lbs

Pan Bolts

14 ft-lbs

Front Band Adjuster Screw With Adapter

36 in-lbs

Front Band Adjuster Screw without Adapter

72 in-lbs

Rear Band Adjuster Screw

72 in-lbs

Bellhousing To Engine Bolts 10mm Bolts

25 ft-lbs

Bellhousing To Engine Bolts 12mm Bolts

42 ft-lbs

Neutral Start Switch

24 ft-lbs

Torque Converter To Driveplate Bolts

40 ft-lbs

Wrangler YJ Transfer Case Torque Specs

Whether you have the NP231 or the NP241 transfer case, you should be filling it with ATF 4. Be sure to check and see what transfer case you have so you use the correct drain plug spec, even though they are almost exactly the same.

Description

Specification

Drain/Fill Plug NP231

15-25 ft-lbs

Drain/Fill Plug NP241

14-25 ft-lbs

Transfer Case To Transmission Fasteners

26 ft-lbs

Speedometer Cable Adapter/Sensor Clamp bolt

90-110 in-lbs

Speed Sensor To Adapter Retaining Screw

15-27 in-lbs

Wrangler YJ Driveline Torque Specs

If you perform any service to your driveline, be sure to install everything in the correct position. Incorrect placement can cause excess vibrations from the driveline over a certain speed.

Description

Specification

Driveshaft U-Joint Strap Bolts

14 ft-lbs

Front Differential Pinion shaft Nut

210 ft-lbs

Rear Axle Pinion Shaft Lock Bolt

14 ft-lbs

Front Axle Shift Motor Housing Bolt

108 in-lbs

Front Axle Shaft Hub Nut

175 ft-lbs

Front Hub Assembly To Steering Knuckle Bolts

75 ft-lbs

Brake Backing Plate Nuts

32 ft-lbs

Rear Axle U-Bolt Nuts

44-59 ft-lbs

Wrangler YJ Brakes Torque Specs

The most common specs needed for brakes are typically for the caliper mounting pins. You will usually only need them if you are replacing your brake pads.

Description

Specification

Power Brake Booster Pushrod Inner Nuts (1987-1991)

25 ft-lbs

Power Brake Booster Pushrod Outer Nuts (1987-1991)

75 in-lbs

Power Brake Booster Mounting Nuts

25-29 ft-lbs

Master Cylinder Mounting Nuts

15 ft-lbs

Caliper Mounting Pins (1987-1989)

25-35 ft-lbs

Caliper Mounting Pins (1990-1995)

132 in-lbs

Wheel Cylinder Mounting Bolts

84 in-lbs

Wheel Speed Sensor Mounting Bolt

90 in-lbs