Check axial clearance of gears. Where exces- sive clearance is found, check gear snap ring, washer, spacer, and gear hub for excessive wear. Maintain .005” to .012” axial clearance between mainshaft gears.
Check splines on all shafts for abnormal wear. If sliding clutch gears, companion flange, or clutch hub have worn into the sides of the splines, replace the specific shaft affected.
Check surfaces of all limit washers. Washers scored or reduced in thickness should be replaced.
REVERSE IDLER GEAR ASSEMBLIES
Check for excessive wear from action of roller bearings.
GRAY IRON PARTS
Check all gray iron parts for cracks and breaks. Replace or repair parts found to be damaged. Heavy castings may be welded or brazed pro- vided the cracks do not extend into bearing bores or bolting surfaces. When welding, how- ever, never place the ground so as to allow cur- rent to pass through the transmission.
CLUTCH RELEASE PARTS
Check clutch release parts. Replace yokes worn at cam surfaces and bearing carrier worn at contact pads.
Check pedal shafts. Replace those worn at bushing surfaces.
SHIFT BAR HOUSING ASSEMBLY
Check for wear on shift yokes and blocks at pads and lever slot. Replace excessively worn parts.
Check yokes for correct alignment. Replace sprung yokes.
Check Iockscrews in yokes and blocks. Tighten and rewire those found loose.
If housing has been disassembled, check neutral notches of shift bars for wear from in- terlock balls.
GEAR SHIFT LEVER HOUSING ASSEMBLY
Check spring tension on shift lever. Replace tension spring and washer if lever moves too freely.
If housing is disassembled, check spade pin and corresponding slot in lever for wear. Re- place both parts if excessively worn.
Check covers for wear from thrust of adjacent bearing. Replace covers damaged from thrust of bearing outer race.
Check bores of covers for wear. Replace those worn oversize.
OIL RETURN THREADS AND SEALS
Check oil return threads in front bearing cover. If sealing action of threads has been destroyed by contact with input shaft, replace bearing cover.
Check oil seal in rear bearing cover. If sealing action of lip has been destroyed, replace seal.
Check all shift yokes and yoke slots in sliding clutches for extreme wear or discoloration from heat.
Check engaging teeth of sliding clutches for partial engagement pattern.
Check synchronizer for burrs, uneven and ex- cessive wear at contact surface, and metal particles.
Check blocker pins for excessive wear or looseness.
Check synchronizer contact surfaces on the auxiliary drive and low range gears for exces- sive wear.
O - R I N G S
Check all O-rings for cracks or distortion. Re- place if worn.