TM 5-3805-262-34
2-8. TRANSMISSION TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. SLOW OR ERRATIC TRANSMISSION SHIFTING (Cont).
Step 3. (Cont).
Connect flowmeter outlet hose to oil cooler hose disconnected from
fitting.
If not already connected, connect inlet and outlet hoses to flow-
meter. Put flowmeter in cab.
Open flowmeter PRESSURE VALVE completely.
Set flowmeter ON-OFF switch to ON position.
Set flowmeter FLOW switch to FLOW position.
Set flowmeter RANGE switch to HI position.
Start engine and operate at idle speed. If CONV TEMP gage pointer is
not approximately 1/2 inch from bottom of gage:
Be sure parking brake valve knob is pushed in.
Press brake treadle and valve and move transmission control lever
to H position.
Increase engine speed to full throttle and hold for 30 seconds.
Set transmission control lever to N position and operate engine at
idle speed for ten seconds.
Repeat the above until CONV TEMP gage needle is approximately 1/2
inch from bottom of gage.
Increase engine speed to 2000 rpm. Be sure transmission control
lever is in N position.
Flowmeter should indicate at least 18.5 gallons per minute.
Turn off engine.
3. LOSS OF DRIVE
If flow is less than 18.5 gallons per minute, charging pump is worn
or there is internal leakage in the transmission. Replace charging
pump (page 3-344) and repeat this step. If flow is still less than
18.5 gallons per minute, replace transmission (page 3-330).
IN ALL RANGES.
Replace control valve (page 3-341).
If problem is not corrected, refer to Malfunction 2 (page 2-85)
above to perform transmission pressure checks.
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