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TM 5-4320-305-24
3-22. REPLACE/REPAIR FRONT COVER (Continued)
CLEANING/INSPECTION:
WARNING
Death or serious injury could occur if diesel fuel oil is not handled carefully. Use in a well-
ventilated area away from open flame, arcing equipment, ignition sources, heaters, or excessive
heat. Always store fuel in proper, marked containers. DO NOT SMOKE. Death or serious injury
could occur if compressed air is directed against the skin. Do not use compressed air for
cleaning or drying unless the pressure is/has been reduced to 30 psi (2.11 kgcm2) or less. When
working with compressed air always use chip guards, eye protection, and other personal
protective equipment.
1 Clean front cover, support bracket, and oil filler cap with diesel fuel oil and dry with low pressure compressed air.
Inspect all components for cracks, distortion, and other damage.
2 Inspect front cover.
a. Remove all traces of sealing compound from crankcase mating surface.
b. Inspect crankcase mating surface for cracks, gouges, or other damage that would prevent proper seating or
sealing of the front cover. Replace a cracked front cover.
c. Inspect the front cover for warpage by placing it mating flange down on a flat surface. Replace a warped front
cover.
d. Inspect shaft seal bore for gouges, wear, or other damage that would prevent proper seating of the seal.
e. Inspect idler pulley bore and oil return cover bore for gouges, wear, or other damage that would prevent proper
seating of the preformed packings.
3 Check that the clamping tabs on oil filler cap are not bent or broken. Replace the cap if the tabs are broken.
4 Inspect the oil filler cap washer in place, for hardening, cracks, and missing segments. Replace a hardened, cracked,
or broken washer.
REPAIR:
1 Clean up minor burrs and gouges of the shaft seal and preformed packing seats in the front cover with emery cloth. If
defects cannot be removed, replace the front cover.
2 Repair any minor damage, nicks, burrs, rust, or corrosion on the front cover.
3 Carefully reshape bent clamping tabs on oil filler cap. Replace the cap if the tabs cannot be reshaped to hold the neck
securely.
4 Scrape all traces of damaged washer from the oil filler cap. Replace with new washer.
5 Repair damaged support bracket in accordance with paragraph 3-6.
3-121
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