GEAR (SEM) 5651131 - Caterpillar

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     6V-9120     Socket (1)     1    
( 1 ) Tooling (A) is a 46 mm socket.Start By:
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove".
Remove the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Remove".
Remove the flywheel housing. Refer to Disassembly and Assembly, "Flywheel Housing - Remove and Install".
Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01385561
Remove bolts (2) from oil supply tube (1). Remove oil supply tube (1) and the O-ring seal from the engine cylinder block.
Illustration 2 g01377302
Install nut (3) and the washer onto the crankshaft. Use Tooling (A) in order to turn the crankshaft.
Illustration 3 g01385745
Remove nuts and bolts (4) that secure connecting rod caps (5) to the connecting rods. Remove connecting rod caps (5) from the connecting rods.Note: Be careful not to damage the bearings. Mark each connecting rod cap and the bearing in order to ensure installation in the original location.Note: Apply tape or rubber tubing to the connecting rod bolts.
Carefully push the connecting rods and the pistons into the top of the bores.
Illustration 4 g01385754
Remove bolts (6) that secure crankshaft main bearing caps (7) and rear main bearing cap (8) in position in the engine cylinder block. Remove crankshaft main bearing caps (7) and rear main bearing cap (8) from the engine.Note: Be careful not to damage the bearings. Mark each crankshaft main bearing cap and the bearing in order to ensure installation in the original location.
Illustration 5 g01377324
This Illustration is of the rear main bearing cap.
Remove seals (9), thrust washers (10), and main bearing (11) from rear main bearing cap (8). Remove main bearings (11) from crankshaft main bearing caps (7) (not shown).
Illustration 6 g01377339
Typical Example
Attach a suitable lifting device to crankshaft (12). The weight of crankshaft (12) is approximately 40 kg (88 lb). Use the suitable lifting device in order to remove crankshaft (12) .Note: Be careful not to damage the finished surfaces on crankshaft (12) .
Illustration 7 g01377349
Remove the upper halves of crankshaft main bearings (13). Remove thrust washer (14) .Note: Note the orientation of thrust washer (14) for assembly purposes.
Illustration 8 g01377357
If necessary, use a suitable hammer and a suitable chisel in order to remove wear sleeve (15) for the crankshaft rear seal. Hold the suitable chisel at right angles to the surface of the wear sleeve. Tap the wear sleeve in three places. You can remove the wear sleeve once the tension is released.Note: When you are removing the wear sleeve, take extreme care not to damage the crankshaft.Note: Take extreme care not to damage the wear sleeve, if it is not necessary to remove the wear sleeve.