TRANSMISSION CONTROL VALVE REPLACEMENT - continued

TM 9-2320-386-24-1-2

0371 00

TRANSMISSION CONTROL VALVE REPLACEMENT (Contd)

CLEANING AND INSPECTION (AT545 TRANSMISSION ONLY)

WARNING

Volatile mineral spirits burn easily and fumes can explode. Do not

smoke or allow flames nearby when using volatile mineral spirits.

Failure to do so may cause serious injury or death to personnel.

NOTE

The AT1545P transmission is not repairable. Disassembly,

cleaning and inspection, and assembly instructions are for

AT545 only.

Clean all metallic parts thoroughly with mineral spirits or by steam-cleaning and dried with

compressed air.

Lubricate steam-cleaned parts with lubricating oil immediately after drying.

Clean hydraulic passages by working a soft wire back and forth through passages and flushing with

mineral spirits. Dry with lint-free rag.

After cleaning, inspect parts to make certain they are entirely clean. Re-clean them if necessary.

Inspect bores for wear, scratches, grooves, and dirt. Remove scratches and burrs with crocus cloth.

Remove foreign matter. Replace parts that have scratches or grooves that cannot be removed with

crocus cloth.

Inspect threaded openings for damaged threads. Repair damaged threads. A threaded insert may

be used if insert will not be subjected to high hydraulic pressure. Inserts used in high-pressure

areas will leak fluid.

Replace housings or other cast parts that are cracked.

Inspect all machined surfaces for damage that could cause fluid leakage or other malfunction.

Repair or replace defective parts.

Inspect hydraulic circuit tracks for porosity, broken lands, cracks, dirt, and land surface

imperfections.

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