TM 9-6115-664-13&P
Section VI. UNIT MAINTENANCE PROCEDURES
4-11.
APU CASE ASSEMBLY (ENCLOSURE) REPAIR
This task covers inspection and repair.
INITIAL SETUP
Tools:
Equipment Condition:
Shop Equipment, Automotive Maintenance
APU Shut Down
and Repair (Item 1, App. B)
Parts/Materials:
Paint (Item 6, App. E)
A.
INSPECTION.
1.
Inspect enclosure components for dents, cracks, warping, or other damage. Check all covers, doors, ducts, and
panels.
2.
Inspect painted surfaces for chips, scratches, bare metal, roughness, or corrosion.
3.
Inspect top cover and side door latches for proper operation. Latches should operate smoothly, without binding.
Inspect top cover, side doors, and ducts for security of attachment. If a component is loose, tighten attaching parts as
required.
4.
Open top covers and side doors and inspect insulation material for damage. Ensure material is securely attached to
component. Inspect APU hoist ring and tie-down rings for security of attachment.
B.
REPAIR.
WARNING
CARC paint dust is a health hazard. Wear protective eyewear, mask, and gloves
when sanding CARC painted surfaces. Failure to comply can cause personal
injury.
1.
Repair painted surfaces of enclosure by removing loose or chipped paint. Sand surfaces until smooth and remove all
evidence of corrosion. Mask unpainted surfaces before painting. Paint APU using green paint (per FED-STD-595).
2.
Repair stencils as required by touching up with available paint. Refer to Figure 2-3 for stencil location and verbiage.
3.
Repair of parts, other than painting, is limited to removal and replacement of damaged components. Refer to
applicable paragraphs for instructions.
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