CAMSHAFT, CAMSHAFT GEAR, AND CAMSHAFT BUSHING REPLACEMENT

TM 10-3930-673-34

3-20. CAMSHAFT, CAMSHAFT GEAR, AND CAMSHAFT BUSHING REPLACEMENT

This Task Covers:

a. Removal

c. Cleaning

e. Assembly

b. Disassembly

d. Inspection

f. Installation

INITIAL SETUP

Equipment Condition

Tools and Special Tools

Fuel transfer pump removed

Shop Equipment, Automotive Maintenance,

(TM 10-3930-673-20)

Common No. 2 Less Power

Engine removed (Para 3-3)

(Item 17, Appendix D)

Front housing cover removed (Para 3-21)

Dial Indicator (Item 3, Appendix D)

Rocker lever arms removed (Para 3-18)

Inside Micrometers (Item 12, Appendix D)

Engine Stand

Materials/Parts

Felt Pen

Cloth, Crocus (Item 8, Appendix B)

Universal Bushing Installation Tool

Gloves, Insulated (Item 17, Appendix B)

Lubriplate (Item 23, Appendix B)

a. Removal.

NOTE

If new tappets were installed, the

camshaft and camshaft bushing(s)

must be replaced.

(1)

Turn crankshaft to align timing

marks on camshaft gear (1) with

timing marks on crankshaft gear (2).

NOTE

When measuring camshaft gear

backlash, hold the camshaft gear

and the crankshaft gear to avoid

getting a false backlash reading.

TR01790

(a)

Measure camshaft gear (2) backlash

using a dial indicator as shown.

(b)

Record measured backlash for reference.

3-125