ARM GP-DROP 3904943 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
B 1H-3110 Bearing Puller 1
8B-7560 Step Plate 1
9U-6600 Hand Hydraulic Pump 1
1H-3108 Push-Puller Leg 2
1H-3107 Bearing Puller 1
3H-0468 Puller Plate 5
3H-0465 Push-Puller Plate 2
1P-0820 Hydraulic Puller 1
5B-0637 Nut 1
8S-6586 Forcing Screw 1
C 5P-0944 Dowel Puller Group 1
5P-0939 Dowel Extractor 1 Start By:
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove".
Remove the flywheel housing. Refer to Disassembly and Assembly, "Flywheel Housing - Remove and Install".
Remove the piston cooling jets. Refer to Disassembly and Assembly, "Piston Cooling Jets - Remove and Install".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Check the main bearing caps for identification for the location and the direction in the cylinder block. The identification marks on the main bearing caps must be installed in the same direction prior to removal.
Check the connecting rod and the connecting rod bearing caps for identification and the location in the cylinder block.
Illustration 1 g01017945
Remove bolts (1). Remove connecting rod bearing caps (2).
Illustration 2 g01116781
Remove bolts (3). Remove main bearing caps (4).
Install Tooling (A) and a suitable lifting device on each end of crankshaft (5). The weight of crankshaft (5) is approximately 177 kg (390 lb).
Remove crankshaft (5) from the cylinder block.
Remove the thrust plates from each side of the No. 4 main bearing.
Remove the lower main bearings from the main bearing caps. Remove the upper main bearings from the cylinder block. Note: Mark the used main bearings or identify the used main bearings for installation if the main bearings will be used again.
Illustration 3 g00996556
Use Tooling (B) to remove crankshaft gear (6) from crankshaft (5).
Illustration 4 g01056151
If necessary, use Tooling (C) to remove dowel (7) and dowel (8) from crankshaft (5).