TM-9-2350-311-20-1
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS
AUGUST 1994
TM-9-2350-311-20-1 - Page 523 of 1275
TM 9-2350-311-20-1
5-1 LUBRICATION
Engine lubrication requirements and procedures are defined in TM
9-2350-311-10
and paragraph 2-15.
5-2 ENGINE INSPECTION
This task covers:
Inspection
References
General mechanic’s tool kit (item 64, Appx H))
TM 9-2350-311-10
. .
Materials/Parts
Equipment Conditlons
Antifreeze test kit (item 63, Appx D)
Air intake grille open (para 11-8)
Engine compartment access cover removed (para 11-5)
Transmission access doors open (para 11-7)
1
2
3
4
5
6
7
8
9
Check gaskets (1), seals (2), and covers (3) for seepage of fuel and oil.
Check for damaged, distorted, or broken hose, tube, and line connectors (nuts, adapters, reduction fittings,
and couplers) (4).
Check fuel hoses, tubes (5), and connectors (4) for cracks, leaks, and seepage of fuel (para 6-9).
Check oil hoses, tubes (6), and connectors (4) for cracks, leaks, and seepage of oil (para 5-3 and 9-4).
Check for stripped or damaged threads on electrical connectors (7), retaining bolts, nuts, and studs. Repair
threads or replace components/items as appropriate.
Check electrical wires, leads, and connectors (8) for cracked insulation, oil, and grease on cables/connectors
(para 8-37).
Check for broken screws and bolts. If broken, drill and remove with screw extractor. Replace broken screws
and bolts.
Check for damaged, burred, pitted, or gummed-up seal, gasket, and preformed packing seats. Clean, remove
burrs, and replace components as required. If damaged beyond repair, or if scope of task is beyond unit
maintenance capability, notify support maintenance.
Check hull engine compartment floor for pools of oil/fuel and coolant.
5-2
Tools
Inspection
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