TM-9-2320-285-24-1
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-9-2320-285-24-1 - Page 184 of 987
TM 9-2320-285-24-1
2-15.
COOLING SYSTEM MAINTENANCE (CONT)
e.
Fan Clutch Control System (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
INSTALLATION (cont)
14
e.
Fitting (12)
Install
In solenoid (29) port
(cont
)
f.
Tubing (9)
Connect
To fitting (12)
g.
Fitting (12)
Tighten
Secures tubing (9)
nut
h.
New O-ring
Install
(25), plate
(24), washer
(23), and
elbow (22)
i.
Reducer bushing
Install
(21)
j.
Filter (20)
Install
Position as shown; filter
must be vertical
k.
Elbow (13)
Install
In filter (20) port
15
Air com-
a.
Fitting (10)
Install
pressor
b.
Tubing (11)
Route and
To fitting (10)
connect
c.
Fitting (10)
Tighten
Secures tubing (11)
nut
16
Fan clutch
a.
Fitting (8)
Install
b.
Tubing (9)
Route and
To fitting (8)
connect
c.
Fitting (8)
Tighten
Secures tubing (9)
NOTE
Thermal switch (7) was installed at time of thermal switch testing (step 12b above).
17
Water mani-
a.
Thermal switch
Connect
fold, right
lead (6)
hand side
b.
Nut (5)
Install and
tighten
c.
Ignition switch
Connect
lead (4)
d.
Nut (3)
Install and
tighten
18
Alternator
Wire assembly (2)
Connect
To alternator using screw
installed at eight o’clock
position
2-161
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