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• If the hydraulic system has been contaminated with debris, install an auxiliary
filter between the cooler and transmission (in cooler-return line). Refer to
Paragraph 1–10 for filter recommendation and installation details.
• Vacuum or air modulator line and/or hose — inspect for deterioration, bad
connections, loose or missing clamps, or improper routing that causes kinks.
4–4. CHECKING CONTROLS
Inspect transmission control components on vehicle and correct any faulty
conditions:
• Shift selector control — inadequate freedom of movement, frayed or kinked
cables, lack of lubrication, worn rod ends or clevis pins, damaged threads, or
improper routing.
• Mechanical modulator control — inadequate freedom of movement, frayed or
kinked cables, lack of lubrication, worn rod ends or clevis pins, damaged
threads, or improper routing.
• Parking brake control — cracks, bends, damaged threads, worn rod ends or
clevis pins.
• PTO control — damage, wear, improper operation, lack of lubrication, or
improper routing.
• Speedometer drive cable — wear, damage, kinks, lack of lubrication,
improper routing, or incorrect drive torque.
• Wiring and related electrical components, sensors, and switches — poor
connections, frayed wiring, or other damage.
NOTE: For AT 500R transmissions, the minimum size for primary
cooler hose is No. 16 with a minimum ID of 0.875 inch (22.4 mm) and
for auxiliary cooler hose is No. 8 with a minimum ID of 0.50 inch
(12.7 mm).
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