TM 5-3805-262-34
SHEET 19 OF 21
Check engine no-load governed speed (page 3-14). If no-load governed
speed is not 2300 to 2340 rpm, do no-load governed speed adjustment
(page 3-14) before going to step (i) below.
Torque converter and hydraulic stall test:
Release parking brake by pushing parking brake valve knob inward.
Start engine and operate at idle speed.
Put transmission control lever in H position.
Press and hold down brake treadle and valve pedal for remainder of
test.
Increase engine speed to 1500 rpm.
Hold BUCKET control lever in CROWD position.
Press accelerator pedal fully.
Tell first assistant to press
tachometer against engine
tachometer drive shaft and
take constant reading of en-
gine speed.
Tell second assistant to watch
thermometer of temperature
probe installed in transmis-
sion elbow.
When transmission temperature
reaches 200 degrees F, tell
first assistant to record en-
gine speed as indicated by ta-
chometer. Engine speed should
be 1430 rpm minimum.
NOTE
Tachometer drive shaft operates at half engine speed. Double tachometer
indication to obtain engine rpm.
11 Move BUCKET control lever to NEUT. position, release accelerator ped-
al, and put transmission control lever in N position. Allow engine to
operate at idle speed for three minutes then turn off engine and apply
parking brake by pulling parking brake valve knob outward.
NOTE
If engine speed in step 10 above is 1430 rpm minimum, engine, torque
converter and transmission, and hydraulic system are probably okay. If
engine speed is not 1430 rpm minimum, do the torque converter stall test
below.
3-21
