INSPECTION INSTRUCTIONS CONTINUED
Inspect all pipe plugs, pipe plug openings, screws, and screw openings for damaged or stripped threads.
d. Check all gasket mating surfaces, flanges on housings, and supports for warpage with a straightedge or
surface plate. Inspect mating flanges for discoloration that may indicate persistent oil leakage.
5. Bearings. Refer to TM 9-214, Inspection, Care, and Maintenance of Antifriction Bearings, for inspection of
bearings. Damaged bearings must be replaced.
6. Studs, Bolts, and Screws. Replace if threads are damaged, bent, loose, or stretched.
N OT E
When gear teeth wear limits are not established, good judgement is required to determine
if gear replacement is necessary.
a. Inspect all gears for cracks using a magnifying glass and strong light. No cracks are permissible.
b. Inspect gear teeth for wear, sharp fins, burrs, and galled or pitted surfaces.
Check keyway slots for wear or damage. If keyways are worn, damaged, or elongated, replace gear.
8. Bushings and Bushing-Type Bearings.
a. Check all bushings and bushing-type bearings for secure fit, evidence of overheating, wear, burrs, nicks,
and out-of-round condition. Replace as necessary.
b. Check for dirt in lubrication holes and grooves. Holes and grooves must be clean and free from damage.
9. Oil Seals. Oil seals are mandatory replacement items.
10. Bore Hole Expansion Plugs. Inspect for leakage. Replace plugs when leakage is present.
11. Machine-Tooled Parts. Inspect for cracks, breaks, elongated holes, wear, and chips. Replace any damaged
12. Machined Surfaces. Inspect for cracks, evidence of wear, galled or pitted surface, burrs, nicks, and scratches.
13. Mating Surfaces. Inspect for remains of old gasket or seal, loose fit, pitting, and evidence of leakage.
14. Rusted Surfaces. Inspect for pitting, holes, and severe damage.
15. Oil-Bathed Internal Parts. Inspect for cracks, nicks, burrs, evidence of overheating, and wear.
16. Internal Parts. Inspect for cracks, nicks, burrs, evidence of overheating, and wear.
17. Externally Exposed Parts. Inspect for breaks, cracks, rust damage, and wear.
18. Springs. Inspect for broken, collapsed, or twisted coils.
a. Any repair procedure peculiar to a specific part or component is covered in the work package relating to
C AU T I O N
Repaired items must be thoroughly cleaned to remove metal chips and abrasives, to
prevent them from entering working parts of the machine.
b. After repair, clean all parts thoroughly to prevent dirt, metal chips, or other foreign material from entering
any working parts.