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 960 of 987
TM 9-2320-285-24-1
2-88.
HOURMETER MAINTENANCE (CONT)
STEP
LOCATION
ITEM
ACTION
REMARKS
CLEANING
(cont)
3
b.
All other parts
Clean
Use cleaning solvent P-D-680;
(cont)
dry with clean cloths
INSPECTION
4
a.
Electrical
Inspect
Replace if insulation frayed,
leads (3, 7,
cut, or cracked or if con-
and 8)
ductor corroded or broken
b.
Hourmeter (9)
a.
Inspect
Replace if cracked, broken,
or inoperative.
If electri-
cal terminals are dirty or
corroded, polish to bright-
ness with fine sandpaper
b.
Record
If hourmeter (9) is defective
reading
enter old and new hourmeter
readings in vehicle logbook
c.
All other parts
Inspect
Replace if cracked, broken,
or threads damaged
INSTALLATION
5
Instrument
Hourmeter (9)
Position
In instrument panel
panel, top
6
Instrument
a.
Electrical
Connect
Plug into hourmeter (9)
panel,
leads
terminals as tagged
underside
(7 and 8)
b.
Clamp (6)
Position
c.
Nut (4) and
Install and
Secures clamp (6)
lock washer
tighten
(5)
d.
Electrical lead
Connect
(3)
e.
Lock washer (2)
Install and
Secures electrical lead (3)
and nut (1)
tighten
7
Cab
Instrument panel
Lower and
Para 2-26g(1)
secure
8
Battery box
Battery ground
Connect
Para 2-34a
cable
2-937
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