7-2
TRANSMISSION, TRANSFER AND DRIVE CONTROL ASSEMBLIES — COMPONENT TESTS (CONTINUED)
MAIN AND LUBRICATING OIL PRESSURE AND OIL
TEMPERATURE CHECK
During the following tests, observe the oil pressure and oil
temperature gages on portable instrument panel The oil temperature
should be approximately 220°F for normal operation. If the oil
temperature exceeds 300°F in any of the tests, the engine should be
stopped and the cause determined. Small variations in pressure from
those given in table 7-1 (p 7-5) do not necessarily mean that malfunc-
tions exist. Malfunctions will cause radical changes in pressure.
GENERAL INSPECTION AND REPAIR PROCEDURES
The technician will perform a visual inspection of transmission-
related components during removal and disassembly.
During inspection, look for the following conditions and take in-
dicated action:
A
Stripped or damaged threads on retaining bolts, nuts, or studs:
Repair threads or replace bolts, nuts, or studs as needed.
B Broken screws or bolts:
Drill and remove with stud remover. Replace broken screw or
bolt.
C
D
E
F
Bent, distorted, or damaged control
TM 9-2350-267-20
rods and tubes:
Straighten, repair, or replace rods and tubes as appropriate.
Rod ends fit too loosely on retaining pins:
Readjust rods as specified in appropriate control system in-
structions. Replace rod ends if bearing wear is excessive.
Improper alinement of control systems. Adjust appropriate con-
trol linkages.
Cracked, distorted, or damaged bell crank and support
assemblies:
Replace as required.
PRESSURE CHECK POINTS
To aid in troubleshooting and testing, a number of plugged open-
ings are provided for checking operating pressures. These plugs can
be removed for connection of pressure gages. Use these test pressure
points to locate abnormal pressures that indicate transmission
malfunctions. Table 7-1 lists normal oil pressures under various
operating conditions with an engine speed of 1000 to 1500 rpm (p 7-5).
TA310092
