Page 090B –

Differential, Locking - Front & Rear

Factory Locking Differentials

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Click the NUMBERS in the blue squares for part listings
Click on the BLUE HIGHLIGHTED NUMBERS in the line drawings to display a COMPLETE part listing of that part number.

Front
Front Differential Actuator
Boot Bushing Bushing Bushing Bushing O Ring Detent Ball Detent Seat Detent spring Gasket Plug
Rear
Rear Differential Actuator
Bolt Lock Cylinder Bolt Lock Sleeve fork Cover
Service Tip: Differential overhaul

Specter recommends that you not attempt any work on the differential without the aid of the Factory Chassis & Body Repair Manual (see page 221). Check #13 Shaft, #18 Gears, #19 Washers for scoring. When reinstalling flange #31 use grease so you don't scar or rip the rubber lip of #29 pinion seal. If #29 Pinion seal is leaking there is a possibility the #31 Flange has a slight groove where the seal rides or that #26 Shims have spun and have become thinner. This also causes play in the #31 flange. If you were just to tighten the nut, improper bearing pre-load #20 to #27 will occur and cause bearing failure. Check #27 Bearing for scoring on race & rollers. Also check #26 shims for spinning. Replace parts as needed. Always replace #29 Pinion Seal on replacement of any parts. Torque spec on #33 nut is 160 ft/lbs.

Tech Note
Tech Note: Differential overhaul
Small Fill Plugs
17mm
Large Fill Plugs
24mm
#090-33A Castle Nut Fits 1958-8/69
26mm
#090-33B Stake Nut Fits 8/69-1/78
27mm
#090-33C Stake Nut Fits 1/78-4/85
30mm
#090-33D Stake Nut Fits 4/85-1/98
30mm
#090-33E-R Stake Nut (Rear) Fits 1/98-2007
30mm

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