TM-9-2320-272-24-4
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 4 OF 4
JUNE 1998
TM-9-2320-272-24-4 - Page 24 of 836
TM 9-2320-272-24-4
5-4. INTAKE AND EXHAUST VALVES REFACING
THIS TASK COVERS:
a. Valve Specifications
c. Cleaning after Refacing
b. Grinding or Refacing Valves
INITIAL SETUP:
APPLICABLE MODELS
EQUIPMENT CONDITION
M939/A1
Cylinder head disassembled (para. 5-3)
TOOLS
SPECIAL ENVIRONMENTAL CONDlTlONS
General mechanic’s tool kit (Appendix E, Item 1)
Well-ventilated work area.
Valve refacer
REFERENCES (TM)
TM 9-2320-272-24P
TM 9-4910-484-10
a. Valve Specifications
NOTE
Hard-faced exhaust valves are marked by letters “EX” or “HF”
in recessed area of valve head. Intake valves are not marked.
Use table 5-l for solid valves
Sodium-filled valves are not used in Cummins engines.
5-18
Back to Top
