TM 9-2320-272-24-1
THIS TASK
COVERS:
a. Breather
and Tube Removal (M939/A1)
d. Breather Tube Installation (M939A2)
b. Breather
Tube Removal (M939A2)
e. Breather and Tube Installation (M939/A1)
c. Cleaning
and Inspection
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TM 9-2320-272-10
TM 9-2320-272-24P
TOOLS
EQUIPMENT CONDITION
General mechanic's tool kit (Appendix E, Item 1)
Parking brake set (TM 9-2320-272-10).
MATERIALS/PARTS
Hood raised and secured (TM 9-2320-272-10).
Locknut (M939/A1 early model engines)
Right splash shield removed (M939/A1)
(Appendix D, Item 272)
(TM 9-2320-272-10).
Lockwasher (M939/A1 early model engines)
Coolant drained (M939A2) (para. 3-53).
(Appendix D, Item 354)
GENERAL SAFETY INSTRUCTIONS
Drycleaning solvent (Appendix C, Item 71)
Rags (Appendix C, Item 58)
Drycleaning solvent is flammable and toxic. Do not
Adhesive sealant (M939/A1)
use near an open flame.
(Appendix C, Item 4)
Antiseize compound (Appendix C, Item 10)
NOTE
References to early model engines refer to engines with a serial
number before 11246664 used in M939/A1 series vehicles.
NOTE
Perform steps 1 and 2 on M939/A1 vehicles with late model
engines and steps 3 through 5 on M939/A1 vehicles early model
engines.
1.
Remove four clamps (2), two breather hoses (3), and breather tube (4) from crankcase breather (1)
and elbow (5).
2.
Remove elbow (5) from air connector (6).
3.
Remove locknut (17), screw (13), and clamp (16) from mounting bracket (12) and breather tube (8).
Discard locknut (17).
4.
Remove screw (15), lockwasher (14), and mounting bracket (12) from engine (11). Discard
lockwasher (14).
5.
Remove two clamps (9), breather hose (10), and breather tube (8) from crankcase breather (1).
CAUTION
Perform step 6 only if crankcase breather requires replacement.
Removal will permanently damage breather, and it must be
replaced.
6.
Mark position of crankcase breather (1) on valve cover (7) and remove breather (1).
3-2
