T M 9 - 2 3 2 0 - 2 7 9 - 3 4 - 1
Troubleshooting Malfunctions (Cont)
T a b l e 2 - 3 . T r o u b l e s h o o t i n g ( C o n t )
Malfunction
Test or Inspection
Corrective Action
4.
T R A N S M I S S I O N ( C O N T )
O I L L E A K I N G A T C O N V E R T E R H O U S I N G ( C O N T ) .
Step 1. Remove cover from top of converter housing. Check for signs of oil.
If engine oil is inside housing, replace rear engine crankshaft oil seal
(TM 9-2320-279-34&P).
If transmission oil is inside housing, inspect inner converter housing mounting
screws, converter pump to converter housing seal ring, converter housing gasket,
torque converter cover seal ring, oil pump seal, pitot attachment screws, pump
hub seal rings and converter pump hub (para 7-9).
EXCESSIVE CREEP IN FIRST AND REVERSE.
Step 1. Check for too high engine idle speed.
If idle speed is more than 750 rpm, adjust engine idle speed (TM 9-2320-279-34&P).
5.
Step 2. Check for lock up pressure at idle speed. Remove pressure switch at transmission lock up
port and install 0 to 300 psi (0 to 2 070 kPa) gage. Start engine and allow to idle with
parking brake applied. Shift transmission into DRIVE. Check for 0 psi (0 kPa) lockup
pressure. There should be no lockup pressure.
If there is no lockup pressure, disassemble transmission and check for warped
clutch plates, stuck (applied) clutch pack pistons or a damaged torque converter to
turbine support bearing (paras 7-7, 7-15, 7-17, 7-18, 7-19).
If there is any lockup pressure, inspect lockup clutch valve for sticking pistons
(para 7-22).
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