TM 9-2320-272-24-4
5-60. TRANSMISSION OIL PRESSURE TESTING (Contd)
NOTE
Refer to TM 9-2320-272-10 when performing steps 12 through 20.
12. Set parking brake.
WARNING
Ensure all personnel are clear from underside and front of vehicle
before starting engine. Transmission slipping into gear may cause
injury to personnel.
13.
Start engine and check oil cooler connections for leaks.
CAUTION
Do not maintain stalled condition for longer than 30-second
intervals. Transmission oil may overheat and cause transmission
damage.
14.
Place transmission shift lever in 1-5 (drive) and operate engine at 1,200 rpm.
15.
Place transmission shift lever in N (neutral) and operate engine at normal operating temperature.
16.
Check transmission oil level.
17.
Operate engine at 1,650 rpm with transmission shift lever in N (neutral) and parking brake set.
Check pressure gauge and note reading.
18.
If pressure is less than 26 psi (179.2 kPa), check for hose or internal oil cooler leakage.
19.
If pressure exceeds 26 psi (179.2 kPa), check for cooler, cooler filter, or cooler hose restriction.
20.
Stop engine and disconnect gauge and hose (2) from elbow (1).
21.
Install oil sampling valve (3) in elbow (1).
22.
Remove pipe plug (5) from supply hose elbow (4).
23.
Install pressure gauge and hose (2) in supply hose elbow (4).
WARNING
Ensure all personnel are clear from underside and front of vehicle
before starting engine. Transmission slipping into gear may cause
injury to personnel.
NOTE
Refer to TM 9-2320-272-10 when performing steps 24 through 29.
24.
Set parking brake.
25.
Start engine and check oil cooler connections for leaks.
26.
Operate engine at 1,650 rpm with transmission shift lever in N (neutral) and parking brake set.
Check pressure gauge and note reading.
27.
If pressure is below 30 psi (207 kPa), check for hose or internal oil cooler leakage.
28.
If pressure exceeds 50 psi (345 kPa), check for cooler or cooler hose restriction.
29.
Stop engine and disconnect gauge and hose (2) from supply hose elbow (4).
30.
Install pipe plug (5) in elbow (4).
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