TM 5-3805-262-34
3-1. ENGINE MAINTENANCE (CONT)
a. Engine Tune-up (SHEET 20 OF 21)
(8) Engine Stall Speed Tests (Cent).
(j) Torque converter stall test:
1
Start engine and operate at idle speed.
2
Release parking brake by pushing parking brake valve knob inward.
3
Put transmission control lever in H position.
4
Press and hold down brake treadle and valve pedal for remainder of
test.
5
Press accelerator pedal fully.
6
Tell first assistant to press
tachometer against engine
tachometer drive shaft and
take constant reading of en-
gine speed.
7
Tell second assistant to watch
thermometer of temperature
probe installed in transmis-
sion elbow.
8
When transmission temperature
reaches 200 degrees F, tell
first assistant to record en-
gine speed as indicated by ta-
chometer. Engine speed should
be 2000 to 2100 rpm using
number 2 Diesel fuel or 1900
to 2000 rpm using number 1
Diesel fuel.
NOTE
Tachometer drive shaft operates at half engine speed. Double tachometer
indication to obtain engine rpm.
9
Release accelerator pedal and place 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.
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