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TM 5-4320-305-24
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 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
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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