FITTING 1252983 - Caterpillar

start by: a) remove fuel tankb) remove fan drivec) remove radiator and guardd) remove air tanke) remove rear bumperf) remove parking brake rotochamber and release valveg) remove axlesh) remove differential lock actuator valve (if so equipped) 1. Drain the oil from the transmission and the bevel gear case. Put identification on oil lines (2) as to their location on the relief control valve. Disconnect lines (2).2. Loosen the nut on bolts (1) on each side of the engine. Tighten bolts (1) until they are against the frame. Tighten the nuts. 3. Remove the bolts that hold retainer (3) to the transmission. Remove the nuts from couplings (4). Slide the retainer and the couplings away from the transmission. Remove cable ends (5) from the links in the control valves. 4. Remove the lifting eyes from the top of the transmission. Install tool (A) on the transmission. Fasten a hoist to tool (A).5. Remove bolts (6) that hold the flange of the transmission to the flywheel housing. 6. Remove nuts (7) that hold the differential carrier to the bevel gear case.7. Install three 1/2"-13 NC forcing screws in the differential carrier. Move the carrier off the studs with the forcing screws.8. Remove the transmission and the differential as a unit. Weight is 1900 lb. (862 kg). 9. Remove four of the bolts from manifold (8). 10. Put the transmission and differential in position on tool (B). Install four bolts to hold the transmission to the bracket on tool (B).11. Remove the hoist and tool (A) from the transmission. 12. Fasten a hoist and straps to the differential as shown. Remove nuts (9) that hold the differential to the transmission.13. Remove differential (10). Weight of the direct drive differential is 300 lb. (136 kg). Weight of the unlocking differential is 400 lb. (181 kg).Install Differential
1. Fasten a hoist and straps to the differential as shown. Put the differential in position on the transmission. Install the lockwashers and the nuts that hold differential (1) to the transmission. Remove the hoist and the straps.2. Install tool (A) on the transmission. Fasten a hoist to tool (A). Remove the bolts that hold the transmission to the bracket on tool (B). Install the four bolts in the manifold.3. Put the differential and transmission in position in the bevel gear case and in alignment with the flywheel. Turn the transmission oil and scavenge pump to put the coupling in alignment with the flywheel. 4. Install the lockwashers and nuts (2) that hold the differential carrier to the bevel gear case.5. Install bolts (3) and the lockwashers that hold the flange of the transmission to the flywheel housing. 6. Remove tool (A) and install lifting eyes (5). 7. Connect oil lines (4) to their correct locations on the relief control valve.8. Loosen the nuts on bolts (6) and turn the bolts away from the frame. Tighten the nuts. 9. Connect cable ends (8) to the links for the control valves. Slide couplings (7) into the transmission. Tighten