STUD-PIN 9S5558 - Caterpillar

Illustration 34 g03375726
If the backlash measurement is less than the required measurement listed in Step 26.b, back off adjusting nut (22) in center housing (20). Be sure to advance adjusting nut (4) in intermediate housing (3) the same distance as adjusting nut (22) was backed off to preserve the bearing preload.
If the backlash measurement is more than the required measurement listed in Step 26.b, back off adjusting nut (4). Be sure to advance adjusting nut (22) the same distance as adjusting nut (4) was backed off to preserve the bearing preload.
After the backlash adjustment and the preload adjustment have been made, the tooth contact between the pinion shaft and bevel gear must be checked. Use the following procedure.
Illustration 35 g03376240
Attach a suitable lifting device to pinion housing (11). The weight of pinion housing (11) is approximately 66 kg (145 lb).
Remove four bolts (12). Use the suitable lifting device to remove pinion housing (11).
Illustration 36 g03375897
Apply a small amount of rouge across 3 sequential teeth on both the concave and convex sides at three separate locations 120° apart.
Illustration 37 g03375693
Attach a suitable lifting device to pinion housing (11). The weight of pinion housing (11) is approximately 66 kg (145 lb).
Install Tooling (K). Use the suitable lifting device to install pinion housing (11) and the original shim pack. Do not install the O-ring seal. Install four evenly spaced bolts (12).
Rotate the bevel pinion so that the bevel gear makes approximately 5 - 8 complete revolutions in both directions.
Illustration 38 g00315875
The correct area of tooth contact begins near the inside end of the teeth. The contact area should extend to a maximum of 50% of the length of the teeth, as shown.
Illustration 39 g00315877
If the tooth contact looks like the marks in Illustration 39, perform the following procedure.
Remove some of the shims that are behind the pinion housing.
Repeat Steps 25.b through 26.d for the backlash adjustment.
Illustration 40 g00315878
If the tooth contact looks like the marks in Illustration 40, perform the following procedure.
Add shims behind the pinion housing.
Repeat Steps 25.b through 26.d for the backlash adjustment.Note: Always make sure that the backlash adjustment is correct before an adjustment is made to the area of tooth contact. Several adjustments to the backlash and to the tooth contact may be necessary to achieve the correct adjustments. A change to gear backlash will also change the gear contact and vice versa.
After the adjustments are made, remove any rouge form the gears.
Illustration 41 g03375939
Install bearing lock (5). Use Tooling (F) to advance adjusting nut (4) if bearing lock (5) does not align with adjusting nut (4).
Illustration 42 g03375941
Install bearing lock (21). Use Tooling (G) to advance adjusting nut (22) if bearing lock (21) does not align with adjusting nut (22).
Illustration 43 g03375946
Install the remaining bolts (12). Tighten all bolts (12) to a torque of 300 40 N m (221 30 lb ft).
Illustration 44 g03374441
Connect clips (10).
Illustration 45 g03374409
Install tube assembly (1).End By:
Install the service brakes.
Install the rear trunnion if the rear oscillating axle was removed.
Install the front trunnion if the rear oscillating axle was removed.
Install the