TM-5-4310-389-14
4-16 TIMING GEARS (SET TIMING).
DESCRIPTION
This task covers:
Adjust
INITIAL SETUP
Tools:
Equipment conditions:
General Mechanic Tool Kit
Disconnect battery
Dial indicator
100400
Valve covers removed
Adjusting device
100640
(paragraph 3-22)
Pointer
101300
Protractor
100910
High pressure (HP)
hand pump
101500
Reservoir tank
101510
Retainer
143400
Materials/parts:
Rags, Wiping, item 26 Appendix E
ADJUST
a.
Determine Top Dead Center (TDC)
1. Turn
engine over until valves of cylinder No. 1 overlap. (Exhaust valve almost closed, inlet valve just
open.)
2. Mount the pointer to the front of the engine. Mark the pulley and use a straight edge to mark the pulley
at 1800 from the pointer (figure 4-37).
3. Turn
the engine 1800 so the second mark and the pointer line up.
4. Mount adjusting device on cylinder No. 1.
5. Using the pressure screw of the adjusting device, press down the rocker arm by 0.20 to 0.24-inch (5 to
6 mm) (figure 4-38).
4-63
