TM-9-2320-260-34-1

TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 1 OF 2

JULY 1994

TM-9-2320-260-34-1 - Page 186 of 657

TM 9-2320-260-34-1

3-48. CRANKSHAFT AND MAIN BEARING REMOVAL

THIS TASK COVERS:

Removal

INITIAL SETUP

APPLICABLE MODELS

REFERENCES (TM)

All

TM 9-2320-260-34P-1

SPECIAL TOOLS

EQUIPMENT CONDITION

Universal puller kit (Appendix B, Item 75)

l Pistons and connecting rods removed (para. 3-47).

l Front gear cover removed (para. 3-33).

TOOLS

General mechanic’s tool kit

(Appendix B, Item 1)

Main bearing cap puller (Appendix B, Item 92)

Lifting straps (Appendix B, Item 155)

Lifting device

1.

Bend down fourteen locktabs (2) and remove fourteen screws (1) and locktabs

bearing caps (10). Discard locktabs (2).

NOTE

l Main bearing caps are not interchangeable. Ensure all caps

are marked for replacement in their original positions.

(2) from seven main

l Tape mating main bearing shells and thrust ring halves together

and label each pair by cylinder number for later reference.

2.

Using main bearing cap puller, pull seven main bearing caps (10) from cylinder block (8) and

crankshaft (5).

3. Remove seven bearing shells (3) and two thrust ring halves (4) from crankshaft (5).

4. Using lifting device and lifting straps, remove crankshaft (5) from cylinder block (8).

5.

Remove seven bearing shells (7) and two thrust ring halves (6) from cylinder block (8).

6. Remove seven ring dowels (9) from cylinder block (8).

NOTE

Perform step 7 and 8 only if crankshaft gear is damaged or exces-

sively worn.

7. Using puller, remove gear (11) from crankshaft (5).

8. Remove woodruff key

(12) from crankshaft (5). Discard woodruff key (12).

3-134