PLANETARY TRANSMISSION 2P3663 - Caterpillar

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Put identification marks on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this will help to keep contaminants from entering the system.
Illustration 1 g00777985
Cut the cable strap and disconnect electrical connector (1). Remove bolt (2), the two washers and the nut in order to remove the wiring clip. Remove bolt (3), the two washers and the nut in order to remove the wiring clip.
Illustration 2 g00777988
Remove four bolts (4) and the four washers in order to disconnect tube (7) from the transmission. Remove three bolts (5), the nut and the four washers in order to disconnect tube (7) from the transmission oil cooler. Remove clamp (6) in order to separate tube (7) and remove the tube from the machine. Remove block (8) from the oil cooler.
Illustration 3 g00777991
Use a suitable tool in order to remove stud (9) from the oil cooler.
Illustration 4 g00778250
Remove clamp (10) in order to separate tube (11). Remove bolt (12) and the washer in order to remove the clip from the oil cooler. Remove four bolts (13), and the four washers in order to disconnect the tube from the transmission. Remove the lower half of the tube from the machine.
Illustration 5 g00778256
Remove bolt (14) in order to disconnect oil drain adapter (15) for the engine from the oil cooler. Move the hose aside.
Illustration 6 g00778732
Loosen the nut in order to slacken clamp (16) and disconnect exhaust pipe (17) from the turbocharger.
Illustration 7 g00778733
Loosen two bolts (18) in order to slacken the clamp and remove exhaust pipe (17) from the machine.
Illustration 8 g00778734
Remove three bolts (19) and the washers in order to remove bracket (20) and the gasket from the machine.Note: Access to the uppermost bolt can be achieved from the top side of the machine.
Illustration 9 g00778735
Use tool (A) and suitable cribbing in order to support the oil cooler.
Illustration 10 g00778736
Remove six bolts (21) and the washers in order to separate the oil cooler from elbow (22) .
Lower tool (A) and carefully remove the oil cooler and the gasket from the machine. Be sure not to catch on any loose wires or hoses. The weight of the oil cooler is 50 kg (110 lb).
Illustration 11 g00778822
Remove four bolts (23) and the four washers in order to remove the top half of tube (11) from the oil cooler. Remove four bolts (24) and the four washers in order to remove bonnet (25), the gasket and the two brackets from the oil cooler.