Chevrolet Light Duty Truck 1973 Service Manual page 237

Fig. 30—Driving Out Bearing Cups
2. Remove rear trunnion snap rings from center yoke.
Remove grease fitting.
3. Place propeller shaft in vice as shown in figure 30.
Drive one rear trunnion bearing cap from center
yoke as shown in figure 30 until it protrudes
approximately 3/8".
4. Once the bearing cup protrudes 3/8", release vice.
Grasp protruding portion of cup in vice and strike
center yoke as shown in Figure 31 until cup is
removed. Remove cup seal by prying off with a thin
screwdriver.
5. Repeat steps 3 and 4 for remaining bearing cup.
. Once the center yoke cups have been removed,
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remove rear yoke half bearing cups. Remove rear
trunnion.
7. Gently pull rear yoke half from prop shaft.
Remove all loose needle bearings. Remove spring
seal.
Fig. 31—Bearing Cup Removal
REAR S U S PEN SIO N A N D DRIVELINE
. Remove front trunnion from center and front yoke
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in same manner as described in Steps 2, 3 and 4.
NOTE: Before front trunnion can be
removed all four (4) bearing caps must be
removed.
Assembly
1. Clean and inspect all needle bearings, cups, seals,
fittings, trunnions and yokes. Assemble all needle
bearings in caps (27 per cap); assemble needle
bearings in front yoke (28 total). Retain bearings
with a heavy grease. Assemble seals to bearing
cups.
2. Place front trunnion in drive shaft. Place center
yoke on front trunnion. Install one bearing cup and
seal assembly in front yoke. Drive in to a depth
that the snap ring can be installed. Install snap ring.
Install remaining cup and seal in front yoke. Install
snap ring.
3. Install front trunnion bearing cups in center yoke in
same manner.
4. With front trunnion completely installed, install
seal on prop shaft (large face first). Gently slip rear
yoke half on prop shaft using care not to upset
rollers. Insert rear trunnion in center yoke. Install
rear yoke half bearing caps on rear trunnion. Install
one rear trunnion bearing cap in center yoke and
press into yoke until snap ring can be installed.
Install remaining cap and snap ring.
5. Grease universal as outlined in Section 0 at all
three (3) fittings (2 conventional type and one in
rear yoke half) that requires a needle nose grease
gun adapter.
. Install propeller shaft with constant velocity joint
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next to transfer case. Torque U-bolts to specifica­
tions. The lubrication fitting at this location is
shown in figure 32.
LUBE FITTING
Fig. 32—Lubrication Fitting
4 -1 3
LIGHT DUTY TRUCK SERVICE MANUAL