TM 9-2520-272-34&P
2-4. MALFUNCTION, TEST OR INSPECTION, AND CORRECTIVE ACTION PROCEDURES
(Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
10.
TRANSMISSION SHIFTS ARE ERRATIC (Continued)
GENERAL SUPPORT. The following maintenance action is indicated:
Repair Area:
A problem in the range clutch area of the transmission is indicated, with the
probability that the forwad (C-1) clutch and related components are affected.
Repair Procedure Reference:
Refer to para. 4-28 for forward (C-1) clutch maintenance tasks.
11.
VEHICLE DOES NOT ATTAIN HIGH SPEED
PRELIMINARY TROUBLESHOOTING. Organizational maintenance determined:
• Brake release was normal and complete.
• Lockup pressure was outside of specified limits.
Step 1.
Replace lockup control valve assembly in accordance with para. 4-5
and check lockup pressure in accordance with para. 2-6 while
operating vehicle on level, flat terrain with engine speed at 2500 rpm
and shift lever at 1-4 position.
Lockup pressure must be 140-160 psi
(965-1103 kPa).
a. If lockup pressure is normal, go to Step 5.
b If lockup pressure is outside of specified limits replace control valve
assembly in accordance with para. 4-5 and go to Step 2.
Step 2.
Recheck lockup pressure.
a. If lockup pressure is normal, go to Step 5.
b. If lockup pressure is outside of specified limits go to Step 3.
Step 3.
Check governor one (G1) pressure in accordance with para. 2-6 with
engine speed at 2000 rpm and shift lever at 1-4 position. Operate
vehicle over level, fIat terrain. G1 pressure must be 72-84 psi
(496-579 kPa)
a. If G1 pressure is normal, go to Step 4.
b. If G1 is outside of specified limits, transmission is defective beyond the
level of Direct Support Maintenance. Separate transmission from power
pack in accordance with TM 9-1450-300-34 or TM 9-2350-277-34 and send
to General Support.
Para. 2-4
2-13
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