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 11 of 698
TM 9-2320-285-24-2
3-4.
ENGINE MAINTENANCE
This task covers engine-transmission:
a.
Removal
c.
Inspection/Repair
b. Cleaning
d. Installation
INITIAL SETUP:
Tools
No. 1 Common Organizational Maintenance
Personnel Required
Tool Kit
Three Automotive Repairers MOS 63H
Torque wrench, 1/2 inch drive,
References
175 pounds foot capacity
TM 9-2815-205-34 (6V53T Diesel Engine
Socket wrench set
Maintenance Manual)
Rubber mallet
Rubber mallet Maintenance Manual)
Hoist, 4000 pounds capacity
Troubleshooting References
Three-branch chain sling
Paragraph
Transmission jack, wheeled
Paragraph
3-2
Engine
3-3
Cooling system
3-14
Transmission
Materials/Parts
Cleaning solvent
Item 1, Appendix C
Clean cloths
Item 2, Appendix C
Automatic trans-
mission fluid
Item 8, Appendix C
Hydraulic sealant
Item 20, Appendix C
Equipment Condition
Paragraph
Condition Description
Tractor parked on level surface, parking brakes applied, and wheels blocked securely.
3-35j
Cab tilted 90 degrees.
2-12b
Engine crankcase drained.
2-12c
Engine-mounted oil filter removed.
2-12d
External engine oil filter lines disconnected.
2-13a
Air cleaner assembly removed; restriction indicator hose disconnected from engine.
2-13b(2)
Fuel lines disconnected from cylinder head, fuel pump, and fuel filters.
2-13c
Fuel filters removed.
2-13d
Quick start removed.
2-13e
Throttle linkage removed from engine.
2-14a
Exhaust pipes removed.
2-14b
Muffler and exhaust stack removed.
2-15a(l)
Radiator drained.
2-15b(2)
Coolant filter assembly, hoses, and fittings removed.
2-15c
Radiator coolant hoses removed and fittings removed from engine.
2-15d
Drive belts, fan, and fan clutch assembly removed.
2-15e
Clutch fan control system removed.
2-24
Belts, alternator assembly, and brackets removed.
2-29
Water level sensor removed.
2-32c
Transmission temperature sender removed.
2-34a
Battery cables disconnected from transmission and starter.
2-35e
Engine-transmission grounding strap removed.
2-41b
Transmission fluid drained.
3-5
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