TM 9-2320-272-24-2
THIS TASK COVERS:
a. Removal
c. Installation and Adjustment
b. Inspection
INITIAL SETUP:
APPLICABLE MODELS
MATERIALS/PARTS
M939/A1
Eight screw-assembled lockwashers (Appendix D,
__
Item 578)
SPECIAL TOOLS
Eight O-rings (Appendix D, Item 438)
Torque wrench adapter (Appendix E, Item 143)
Lubricating oil (Appendix C, Item 50)
TOOLS
REFERENCES (TM)
General mechanic's tool kit (Appendix E, Item 1)
TM 9-2320-272-10
Dial indicator (Appendix E, Item 36)
TM 9-2320-272-24P
Torque wrench (Appendix E, Item 146)
EQUIPMENT CONDITION
Parking brake set (TM 9-2320-272-10).
Left and right splash shields removed
(TM 9-2320-272-10).
Rocker lever housings and push tubes removed
NOTE
Fuel crossover connectors are mounted using screw-assembled
lockwashers on late model engines.
1.
Remove eight screw-assembled lockwashers (1), two crossover connectors (4), and eight O-rings (3)
from cylinder heads (2). Discard O-rings (3) and screw-assembled lockwashers (1).
NOTE
Tag all crossheads for installation.
2.
Loosen twelve crosshead adjusting nuts (6) on twelve valve crossheads (7).
3.
Remove twelve valve crossheads (7) from cylinder heads (2).
1.
Inspect twelve valve crossheads (7) for cracks, breaks, or scoring. Replace if cracked, broken, or
scored.
2.
Inspect adjusting screws (5) for damaged threads. Replace adjusting screws (5) if threads are
damaged.
4-210
