C3.3B Tier 4 Interim and EU Stage 3A Engines for Caterpillar Built Machines – Crankshaft and Main Bearings – Install

Installation Procedure

Note: Refer to Specification UENR0995 "Engine Design" for non-specified engine Torque Values.

Note: Install the main bearings dry when the clearance checks are made.

Note: Install the crankshaft main bearings upper and lower halves, with the bearing tabs fitting into the notch of the crankshaft main bearing cases.

Illustration 1	g02802437

1. Install lower half of main bearing (6) into lower cylinder block (11) .

Illustration 2	g02802433

2. Install lower half of thrust bearing (10) . Apply Tooling (A) to main bearing (11) .

Illustration 3	g02802435

3. Use a suitable lifting device and install crankshaft (1) into the lower cylinder block.

Illustration 4	g02802431

4. Install two upper half thrust bearings (9) into the gear end of the crankshaft (1) .

Illustration 5	g02865838




Illustration 6	g02802426

5. Install upper main bearing (8) into upper cylinder block (7) .

6. Apply Tooling (B) to mating surface of lower cylinder block (6) .

7. Use a suitable lifting device and install upper cylinder block (7) onto crankshaft (1) and lower cylinder block (6) .

Illustration 7	g02866178

8. For the C3.3B apply clean engine oil to bolts. Install bolts (5) and torque to 138.0 ± 147.0 N·m (101.78 ± 108.42 lb ft).

9. For the C2.6 apply clean engine oil to bolts. Install bolts (5) and torque to 128 ± 137 N·m (94 ± 101 lb ft).

10. For the C3.3B apply engine oil to bolts. Install bolts (4) and torque to 59.0 ± 63.0 N·m (43.52 ± 46.47 lb ft).

11. For the C2.6 apply engine oil to bolts. Install bolts (4) and torque to 49 ± 55 N·m (36 ± 41 lb ft).

Illustration 8	g02802423

12. Install connecting rod caps (2) on crankshaft (1) and install bolts (3) . Tighten bolts (3) to a torque of 69 to 73 N·m (51 to 54 lb ft).

    Note: Refer to Guideline For Reusable Parts, SEBV0544, "Engine Bearings and Crankshafts" for complete details concerning the measurement of bearing clearances.

End By:

1. Install the front housing.
2. Install the flywheel housing.
3. Install the oil pan.