TM 9-2320-272-24-4
5-60. TRANSMISSION OIL PRESSURE TESTING
THIS TASK COVERS:
c. Automatic Shift Speed Test
a. Oil Cooler Pressure Test
b. Main Pressure and Governor
Pressure Test
INITIAL SETUP:
REFERENCES (TM)
APPLICABLE MODELS
TM 9-2320-272-10
All
TM 9-2320-272-24P
SPECIAL TOOLS
EQUIPMENT CONDITION
Pressure gauge set (300 psi) (Appendix E,
Parking brake set (TM 9-2320-272-10).
Item 51)
Transmission oil at proper level (TM 9-2320-272-10).
TOOLS
Vehicle at curb weight (empty) (TM 9-2320-272-10).
Wheels blocked (chocked) (TM 9-2320-272-10).
General mechanic's tool kit (Appendix E, Item 1)
Drill press
SPECIAL ENVIRONMENTAL CONDITIONS
21/64 drill bit
Work area clean and free from blowing dirt and
1/4-18 NPTF tap
dust.
Pipe plug
Two pipe plugs
GENERAL SAFETY INSTRUCTIONS
MATERIALS/PARTS
Personnel must be clear from underside and front of
vehicle when engine is running.
O-ring (Appendix D, Item 430)
Cap and plug set (Appendix C,
Item 14)
a. Oil Cooler Pressure Test
CAUTION
Before disconnecting transmission pressure lines, clean surrounding
surfaces and plug all openings to prevent entry of dirt or debris into
transmission. Damage will occur if dirt or debris enters transmission.
1.
Disconnect oil cooler supply hose (1) from elbow (2) on top of oil cooler (7).
NOTE
Note elbow alignment for connection.
2.
Loosen nut (3) and remove elbow (2) and O-ring (4) from oil cooler (7). Discard O-ring (4).
3.
Using drill press and 21/64 drill bit, drill hole in side of elbow (2) opposite hose port.
4.
Tap hole in elbow (2) with 1/4-18 NPTF tap.
CAUTION
After tapping, elbow must be thoroughly cleaned and all burrs
and shavings removed. Any shavings entering system will damage
transmission.
5.
Remove elbow (2) from drill press and thoroughly clean.
6.
Install new O-ring (4) and elbow (2) in oil cooler (7) until aligned as noted in step 2.
7.
Tighten nut (3) until O-ring (4) is seated.
8.
Install pipe plug (8) on elbow (2).
9.
Connect oil cooler supply hose (1) to elbow (2).
5-386
