GMC 1982 Light Duty Truck Service Manual page 499

Fig. 4B6-7H--3/4 Ton Unit
7. Install ring gear and side bearings using the procedure
outlined for conventional differentials.
8. Place differential unit in carrier and adjust ring gear
and pinion backlash and gear tooth pattern as outlined
in the conventional differential section.
9. Check operation as outlined in the Service Test
Procedure.
Use standard differential lubricant. Do not
N O T IC E :
use lubricant designed for " Limited Slip" differentials,
or damage may result
10-1 / 2 " R IN G G E A R AXLE 3 / 4 TO N A N D 1-TON
TRU CKS
C A U T IO N : D u e to critical
d im e n s io n s , d iffe re n tia l sid e g e a r s a n d
c a n n o t be serviced separately. If a n y side g e a r or
case d a m a g e is fo u n d , the entire differential m u st
be replaced.
C A U T IO N : In te rn a l c le a ra n c e s are such
sh im s, reaction blocks, a n d thrust ring sh o u ld not
be re p la c e d u n n e c e ssa rily e ve n if s lig h t w e a r
in dicatio n s are present. If sh im s, reaction blocks,
or th rust ring m u st be replaced d u e to d a m a g e ,
correct m e a su re m e n t a n d rep la ce m e n t procedures
m u st be fo llo w ed . Failure to do so m a y disturb
critical clearances a n d could result in differential
com plaints.
in te rn a l c le a ra n ce
case
th a t
D isa sse m b ly
1. Remove ring gear and side bearings following
procedures established for the standard differential.
2. Remove (3) screws on front face of ring gear flange.
3. Set unit on right side case half and gently pry apart at
yoke hole locations Fig. 4B6-7H.
4. Remove left side case half. To prevent side gear from
falling out, hold thumb against inside of gear hub while
separating case halves.
5. Inspect components for damage. If the governor
assembly and latching bracket are the only items to be
replaced, remove and proceed to Step 7 of reassembly
procedure. Pry under pinion yoke and remove and
proceed with detailed inspection if further damage is
observed.
Inspection
1. Clean all parts with solvent. Inspect all bearings for
chipping or evidence of excessive wear. Replace parts
as needed.
2. Inspect all differential components for excessive wear
and breakage. Replace parts as needed. TH E
FO LLO W IN G
C O M PO N E N TS FOR TH IS D IFFER EN TIA L.
• Governor assembly and latching bracket with spring.
• Cam Plate.
• Clutch disc pack with wave spring and guide clips.
• Pinion yoke.
• Pinion gears.
• Pinion thrust washers.
Fig. 4B 6 -8H --3 /4 Ton Assembly
REAR AXLE 4B6-17
A R E SE R V IC E A B L E