PLATE 8J4891 - Caterpillar

start by: a) remove final drive gears and idler pinion 1. Remove bolts (2) and retainers (1). 2. Install tooling (A) (earlier tooling) or (B) (later tooling) on the sprocket shaft. Make sure that the distance from the front face of the nuts on the legs to the bevel gear case is the same on all the studs.3. Put enough force on the shaft to move it from the bevel gear case. Another adapter (3) must be added to tooling (A) to completely loosen the sprocket shaft. 4. Remove all of tooling (A) or (B) except the studs. Fasten a hoist and tool (C) to the sprocket shaft. Remove the studs. Remove the sprocket shaft (5).5. Remove bearing (4) from the shaft.Install Sprocket Shafts
1. Fasten a hoist and tool (A) to the sprocket shaft (1) and put it in position in the bevel gear case. Make sure the groove for the key in the shaft is at the top. Install studs (2) from tooling (B) to keep the shaft in position.2. Install tooling (B) on the shaft. 3. Put a small amount of force on the shaft to put tooling (B) in alignment with the shaft. Make an adjustment to nuts (3) so the distance (C) is the same on all the studs.4. Put force on the sprocket shaft until its flange is against the bevel gear case.5. Remove tooling (B). 6. Heat bearing (6) in oil to a maximum temperature of 275°F (135°C). Install the bearing on the sprocket shaft. Make sure the bearing is even with the bevel gear case.7. Install retainers (4) and bolts (5). Tighten the bolts by hand to a torque of 550 50 lb.ft. (745.7 67.8 N m).end by: a) install final drive gears and idler pinion