CROWN AS-PISTON 1646556 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 138-7574 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 rear housing. Refer to Disassembly and Assembly, "Housing (Rear) - Remove".
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 g01150281
Remove bolts (1). Remove connecting rod bearing caps (2).
Illustration 2 g01150289
Remove bolts (3) and bolts (5). Remove main bearing caps (4).
Install Tooling (A) and a suitable lifting device on each end of crankshaft (6). The weight of crankshaft (6) is approximately 188 kg (415 lb).
Remove crankshaft (6) from the cylinder block.
Remove the thrust plates from each side of the No. 4 main bearing.
Remove the lower main bearings from main bearing caps (4). Remove the upper main bearings from the cylinder block.
Illustration 3 g01150282
Use Tooling (B) to remove crankshaft gear (7) from crankshaft (6).
Illustration 4 g01150284
If necessary, use Tooling (C) to remove dowel (8) and dowel (9) from crankshaft (6).