Final Drive Gear, Idler Pinion, and Bearings

b. Inspection. Inspect gear cases, covers, bearing

cages, and flanges for cracks, breaks, and damaged

threads. Repair cracked or broken cases, covers, or

cages by welding and grinding smooth, or replace

the part, Repair thread damage by installing helical

inserts.

c. Installation.

(1) Install two 5/8 inch 11 NC guide pins (2,

fig. 6-127) attach a hoist, align pinion outer bearing

inner races (5, fig. 6-126) with pinion outer race

and roller assemblies (6) and install the final drive

case.

(2) Install the bolts securing the final drive

case to the steering clutch case. Tighten the bolts to

the torque value given in paragraph 1-4.

(3) Remove dirt guard (1, fig. 6-127) and

clean thoroughly so dirt will not fall on the floating

ring seals when the sprocket is installed.

(4) Install metal floating ring seal (1, fig. 6-

128) using installer tool (2) as shown (para 6-22).

1 Metal floating ring seal

2 Seal installer

Figure 6-128. Installing metal floating ring seal.

6-25. Final Drive Gear, Idler Pinion, and

a. Removal.

(4) Remove the final drive gear case as

(2) Inspect drive pinion and idler pinion outer

race and roller assemblies (6, fig. 6-126) for ex-

cessive wear.

(3) Remove both pinion outer race and roller

assemblies from the final drive case after removing

plugs (1, fig. 6-129) and dowels (2).

(4) Using a inch 20 NC bolt, remove dowel

(2) and remove pinion outer race and roller

assembly as a unit. Remove both pinion outer race

and roller assemblies in a like manner.

NOTE

All outer race and roller assemblies with snaprings are

1 Dirt guard

to be assembled with snap rings next to the gear teeth.

2 Guide pins

Figure 6-127. Final drive case installation.