TRANSMISSION CONTROL VALVE REPLACEMENT (Contd)
CLEANING AND INSPECTION (AT545 TRANSMISSION ONLY)
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.
The AT1545P transmission is not repairable. Disassembly,
cleaning and inspection, and assembly instructions are for
Clean all metallic parts thoroughly with mineral spirits or by steam-cleaning and dried with
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
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
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