GMC 1990 Light Truck Repair Manual page 207

Figure 63—Master Pinion Block
D-115 Scooter Gage (Miller)
1
. Clean the carrier bores and all the tools. The pinion
bore must be free of nicks and dirt.
2. Install D-120 or D-137 to the pinion bore (figure 63).
3. Place D-116-2 onto D-115-3 (figure 64).
4. Install the arbor and discs into the axle housing.
5. Install D-116-1 onto D-120 and against the arbor
(figure 65).
6
. Place D-115 onto the height block (figure
• Place the gage on the upper step of the height
block. Push the gage down on the height
block. While applying pressure, set the dial
indicator at zero.
7. Slide the gage over the arbor (figure 67).
8
. Record the reading at the point of greatest
deflection (when the dial indicator needle is
centered between movement to the left and to the
right).
Figure 64—Arbor and Discs
DANA REAR AXLES 4B5-21
66
).
Figure 65—Pinion Height Block