GMC T Series 1994 Repair Manual page 246

Figure 34— Installing the Pilot Bearing
• Carrier case (29).
• Ring and pinion gears (37).
• Differential case (35).
• Bearings (33).
• Carrier connector (9) (K1, 2 models).
Preferred Method:
Tool Required:
J 34672 Depth Gage (or equivalent) •
• Refer to figures 36 and 37
1. Push on the inner end of the shaft (1), and move
the shaft outboard as far as it will go. The shaft
must be in this position when measuring dimension
" A" .
2. Measure dimension " A." Use J 34672 or equivalent
(figure 36).
• K1, 2: Tube flange machined surface to inner
surface of connector (9).
• K3: Tube flange machined surface to inner sur­
face of axle shaft shoulder.
3. Measure dimension " B."
• Carrier machined surface to outer surface of
output shaft (23).
4. Subtract dimension " A" from dimension " B."
5. The correct shim size will be one size smaller than
the figure obtained in step 5. Examples:
• If the figure obtained in step 5 was 3.53 mm,
use a 3.30-mm shim.
• If the figure obtained in step 5 was 3.30 mm,
use a 2.70-mm shim (K1, 2 models) or 2.80-mm
shim (K3 models).
6. Shims are available in the following sizes:
• K1, 2 models: 1.27 mm 1.78 mm, 2.29 mm,
2.70-mm, 3.30 mm, 3.81 mm.
• K3 models: 1.80 mm, 2.30 mm, 2.80 mm, 3.30
mm, 3.80 mm, 4.30 mm, 4.80 mm.
Alternate Method
Use only if proper tools for calculating the shim size
are not available.
+ 4 - Install or Connect (Figures 1 through 4)
1. Original shim (20) to the shaft (1). Use chassis
grease to hold it in place.
2. Assembled axle tube and shaft to the carrier. Use
no sealer at this time.
NOTICE: Refer to "Notice
3. Bolts (6).
Tighten
• Bolts (6) to 40 N-m (30 lbs. ft.).
Measure (Figure 38)
m
Tool Required:
J 8001 Dial Indicator (or equivalent)
• Shaft (1) end play.
1. Install a dial indicator (J 8001) or equivalent on the
axle tube end. The plunger of the indicator must be
at a right angle to the axle flange (figure 38).
2. Move the shaft (1) back and forth and read the end
pl ay. C o r r e c t en d p l a y is 0 . 0 3 - 0 . 5 1
(0.001-0.020 inch).
3. If end play is incorrect, install a thicker or thinner
shim as needed to bring end play into the specified
range.
Install or Connect (Figures 1 through 4)
1. Bolts (6).
2. Axle tube assembly.
FINAL ASSEMBLY
|n j||
Clean (Figures 1 through 4)
Sealing surfaces of the tube (5) and carrier assem­
bly. Remove all oil and grease.
on page 4C2-1.
"
mm