TM 5-3805-262-20
3-30. ENGINE TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. ENGINE STALLS FREQUENTLY OR DOES NOT DEVELOP FULL POWER (Cont).
S t e p 9 . ( C o n t ) .
Personal injury and property damage can result if loader is allowed to
m o v e d u r i n g f o l l o w i n g t e s t s. Press right brake treadle valve fully and
hold down to prevent loader movement while transmission is in H range.
Don’t permit personnel to stand in front of loader. If loader starts to
m o v e , r e l e a s e a c c e l e r a t o r p e d a l , s h u t d o w n e n g i n e , a n d r e p a i r b r a ke
system before proceeding.
Heat transmission oil:
a. Start engine and operate at idle speed.
b. Allow air system pressure to build to normal operating pressure
(AIR PRESS gage needle indicates in green zone).
c. Press and hold down brake treadle valve pedal for remainder of
procedure.
d .
Place transmission control lever in H position.
e. Press accelerator pedal fully for two minutes.
f .
Release accelerator pedal and place transmission control lever
in N position.
g.
Press accelerator fully for 30 seconds, then release accelerator
pedal.
h.
Repeat steps d through g above until CONV TEMP gage pointer is
1/8 inch from red zone.
Heat hydraulic system oil:
a. Apply parking brake and
place transmission control
lever in N position.
b . P r e s s a c c e l e r a t o r p e d al
f u l l y .
c. Hold BUCKET control lever in
CROWD position for 15 se-
conds. Then return BUCKET
control lever to NEUT. posi-
tion for 15 seconds.
d. Repeat step c above until
hydraulic pump outlet tube
is warm to touch, then re-
l e a s e a c c e l e r a t o r p e d a l.
Dial 10 into VTM TEST SELECT switches.
Press and release TEST button.
Release parking brake.
3-232
