TM-9-2320-285-24-2
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-2 - Page 108 of 698
TM 9-2320-285-24-2
3-17.
TRANSMISSION MAINTENANCE (CONT
a. Testing (cont).
(2)
Hydraulic Pressure Test (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
TESTING (cont)
8
c
Governor
Remove
(cont)
pressure tap
(2) plug
d
Fitting and
Install
pressure
gage
9
Tractor cab
a
Engine
Start
b
Gear shift
Position
Place gear shift lever in
lever
drive (2-5) position
c
Engine
Accelerate
Accelerate engine to 1500 rpm
10
Transmis-
Pressure gage
Observe
Gage should indicate within
sion, left
54-58 psi range Record
side
actual reading on note pad
11
Tractor cab
a
Engine
Decelerate
b
Gear shift
Position
Place gear shift lever in
lever
neutral (N) position
c
Engine
Stop
12
Transmis-
a
Pressure gage
Remove
sion, left
and tee
side
fitting
b
Governor
Install
pressure tap
(2) plug
13
Transmis-
Tee fitting
Install
In oil cooler line at top of
sion, right
and pressure
transmission
side
gage
14
Tractor cab
a
Engine
Start
b
Gear shift
Position
Place gear shift lever in
lever
neutral (N) position
c
Engine
Accelerate
Accelerate engine to 2000 rpm
15
Transmis-
Pressure gage
Observe
Gage should indicate within
sion, right
23-30 psi range Record
side‘
actual reading on note pad
3-102
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