STALL TEST-continued

TM 9-2350-222-20-1-3

2A ENGINE AND 20 ENGINE POWERPLANT TESTS (GROUND HOP) (Sheet 11 of 15)

14. If engine speed is over 2050 rpm, there is clutch slippage in transmission. Verify that shift

control lever is in high (check control indicator position). Notify support maintenance.

NOTE

This test may also be used to determine if the low-range or

reverse-range transmission servobands are slipping.

15. Set transmission in low or reverse range by grasping shift control lever and pull or push lever to

set indicator to selected range.

CAUTION

Do not do stall test for more than 30 seconds at full throttle

or allow transmission oil temperature to go into red area on

transmission oil temperature indicator.

16. Watch tachometer and operate engine at full throttle for no more than 30 seconds, three times.

17. If engine speed is below 1800 rpm after three checks, engine is not operating properly. Notify

maintenance supervisor that check of engine performance is required.

18. If engine speed exceeds 2050 rpm, servobands are slipping. Verify that shift control lever is in

selected range (check position of control indicator) and adjust forward or reverse servobands (page

11-63).

Go on to Sheet 12

TA1302S8

5-58