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TM 5-4320-306-24
3-9. REPLACE/REPAIR COOLING AIR BLOWER AND COOLING AIR DUCTING (Continued)
CLEANING/INSPECTION/REPAIR:
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 con-
tainers 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
Use a lint-free cloth dampened with diesel fuel oil to clean the cooling air ducting (air cowling top and
base, stay plates, baffle mounting plate, and air shield). Remove all traces of grease and dirt. Dry
ducting with compressed air. Inspect for dents, rust, corrosion, or other damage. Straighten dents.
Remove rust or corrosion. Replace if severely rusted or damaged.
2
Check rubber grommets for deterioration or hardening. If the grommets are missing or damaged so they
cannot protect the injector lines or fuel hose from vibration against the plates, the grommets must be
replaced.
3
Inspect sealing brush for loss of bristles and other damage that would prevent sealing of cooling air.
Replace damaged brush.
4
Wash cooling air blower components with clean diesel fuel oil. If necessary, scrub with a soft-bristled
brush. Allow parts to air dry.
5
Inspect assembled quill shaft and bushing for evidence of corrosion on mating surfaces. If corrosion is
evident, mark location of bushing on quill shaft, and press quill shaft out of bushing. Inspect inside
diameter of bushing and outside diameter of quill shaft for corrosion and/or damage that would prevent
reuse of parts. Remove corrosion using emery cloth or crocus cloth. If no corrosion is evident at mating
surfaces of bushing and quill shaft, inspect all exposed surfaces for corrosion and/or physical damage
that would prevent reuse. Remove surface damage and blend in damaged areas of components using
emery cloth or crocus cloth. Remove sharp edges caused by wear or repair effort. Be sure quill shaft is
straight. Replace bent quill shaft.
6
Check threads of V-belt pulley bolt and nut for cross threading, damage, and/or corrosion that would
prevent reuse. Replace damaged bolt or nut.
7
Check V-belt pulley sheaves for sharp edges and/or corrosion or damage that could damage V-belts
during operation. Remove corrosion using emery cloth or crocus cloth. Replace damaged V-belt pulley.
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