Preventive Maintenance Preventative Maintenance Everyday there are countless vehicles operating over the highways with transmissions in such a neglected mechanical condition, they can be referred to as failures looking for a place to break down. They lack a proper and organized preventive maintenance program.
A number of conditions contrary to good preventive maintenance can generally be pointed to when inspecting a failed transmission. Taking a few minutes every so many hours or miles to do a few simple checks could help avoid eventual breakdown or reduce the repair cost. If the transmission is not cared for, it will breakdown. Checks Before Transmission Removal 1.
Air System and Connections Check for leaks, worn air lines, loose connections and capscrews. See SERVICING AIR SYSTEM.
2.
Clutch Housing Mounting Check all capscrews of clutch housing flange for looseness.
3.
Clutch Release Bearing (Not Shown) Remove hand hole cover and check radial and axial clearance in release bearing. Check relative position of thrust surface of release bearing with thrust sleeve on push-type clutches.
4.
Clutch Pedal Shaft and Bores Pry upward on shafts to check wear. If excessive movement is found, remove clutch release mechanism and check bushings on bores and wear on shafts. See OEM literature.
5.
Lubricant Change at specified service intervals. Use only the types and grades as recommended. See LUBRICANTS.
6.
Filler and Drain Plugs Remove filler plugs and check level of lubricant at specified intervals. Tighten fill and drain plugs securely.
7.
Capscrews and Gaskets Check all capscrews, especially those on PTO covers and rear bearing covers for looseness which would cause oil leakage. Check PTO opening and rear bearing covers for oil leakage due to faulty gasket.
8.
Gear Shift Lever Check for looseness and free play in housing. If lever is loose in housing, proceed with Check No. 9.
9.
Gear Shift Lever Housing Assembly Remove air lines at slave valve and remove the gear shift lever housing assembly from the transmission. Check the tension spring and washer for set and wear. Check the gear shift lever spade pin and slot for wear.
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Preventive Maintenance
Preventive maintenance is a general term which applies to all procedures necessary to have maximum life and satisfactory service at the lowest possible cost, short of removing and repairing the unit.
