Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSGMC1989S15/T15 2WD JIMMY V6-173 2.8LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINDIFFERENTIAL ASSEMBLYSERVICE AND REPAIRUNIT REPAIRLOCKING DIFFERENTIALADJUSTMENT OF THE DIFFERENTIAL
1989 GMC S15/T15 2WD Jimmy V6-173 2.8L
Adjustment of the Differential
1989 GMC S15/T15 2WD Jimmy V6-173 2.8LSECTION Adjustment of the Differential
^ If it is necessary to replace the cam gear, right side gear, or thrust block, the entire differential must be adjusted. The differential is adjusted by using selective thickness thrust washers behind each side gear and selective thickness reaction blocks.
^ It is important to build up the differential properly. The proper clearance between parts is critical to the operation of the unit.
^ There are three adjustments needed:
(1) Left side gear backlash.
(2) Right side gear backlash.
(3) Thrust block clearance.
^ It is important to build up the differential properly. The proper clearance between parts is critical to the operation of the unit.
^ There are three adjustments needed:
(1) Left side gear backlash.
(2) Right side gear backlash.
(3) Thrust block clearance.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.