GROMMET 6V1249 - 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
D 8T-5096 Dial Indicator 1
E 8T-3052 Degree Wheel 1 Start By:
Remove the front housing.
Remove the flywheel housing.
Remove the piston cooling jets.
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) for connecting rod bearing cap (2). Remove the connecting rod bearing caps.
Illustration 2 g01020310
Remove bolts (3) for main bearing cap (4). Remove the main bearing caps.
Illustration 3 g00996555
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 the crankshaft 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 4 g00996556
Use Tooling (B) to remove crankshaft gear (6) from crankshaft (5).
Illustration 5 g01056151
If necessary, use Tooling (C) to remove dowel (7) and dowel (8) from crankshaft (5). Installation Procedure
Table 2
Required Tools
Tool Part Number Part Description Qty
A 138-7575 Link Bracket 2
D 8T-5096 Dial Indicator 1
E 8T-3052 Degree Wheel 1
Illustration 6 g01018035
Install dowel (7) in the crankshaft. Protrusion of dowel (7) from the crankshaft face ... 6.4 mm (0.25 inch)
Install dowel (8) in the crankshaft. Protrusion of dowel (8) from the crankshaft ... 4.1 0.5 mm (0.16 0.02 inch)Note: Do not use a torch to heat the crankshaft gear. Overheating of the crankshaft gear will cause premature failure.
Raise the temperature of crankshaft gear (6) to a maximum temperature of 233° C (451° F). Install crankshaft gear (6) on the crankshaft with the keyway in alignment with dowel (8). The Timing Mark "V" of the gear should face away from crankshaft (5). If necessary, use a suitable brass drift and a suitable hammer to seat the crankshaft gear against the shoulder of the crankshaft.
Clean the cylinder block and the main bearing caps thoroughly.
Illustration 7 g01048335Note: Install the main bearings dry when clearance checks are performed. Refer to Disassembly and Assembly, "Bearing Clearance - Check". Apply clean engine oil on the face of the main bearings for final assembly.
Install the upper halves of main bearings (9) in the cylinder block. Note: Ensure that the main bearings are installed so that the