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HYREVZ™ MOTOR REMOVAL, DISASSEMBLY, INSPECTION, CLEANING
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TM-9-6115-667-13P Power Unit Diesel Engine Driven 2 1/2 Ton Trailer Mounted 30 kw 50/60 Hz PU-803 Manual
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Drive Shaft
TM9-6115-667-13&P 4. Remove the idler gear (7), drive gear (8), needle roller key (12), and the idler shaft (6). 5. Remove  the  large  o-ring  (4)  while  being  careful not to damage the o-ring groove or surrounding surface. 6. Remove the bearing housing (9) from the vise.   While    protecting    the    mating    surface    from    damage, remove the retaining ring (10) from around the bearing. Hold  the  bearing  housing  and  tap  lightly  on  the  small diameter end of the drive shaft (11) to remove it and the bearing (13) from the front of the bearing housing. 7. To remove the bearing (13) from the drive shaft (11),  remove  the  retaining  ring  (14)  on  the  drive  shaft next to the bearing.  Press on the gear end of the drive shaft   while   supporting   the   outer   race   of   the   bearing. Discard the old bearing. 8. Remove  the  retaining  ring  (15)  at  the  bottom  of the  bearing  bore  to  service  the  seal  gland  (16),  o-ring (17)  and  quad  ring  (18).    Remove  the  seal  gland  (16) using typical o-ring service tools to pry it out of its bore. Take  care  to  avoid  damaging  the  seal  surfaces.    Note seal   orientation.      Remove   the   o-ring   (17)   from   the outside  of  the  seal  gland.    Remove  the  quad  ring  (18) from the inside of the seal gland. 9. If  the  bushings  (3)  are  to  be  replaced,  remove the  four  bushings  (3)  from  the  bearing  housing  (9)  and gear    housing    assembly    (1)    using    a    typical    bushing removal tool with a 7/16 inch collet. INSPECTION AND CLEANING Inspect and clean all parts as follows: Cleaning Clean all parts with a degreasing solvent.  Blow dry with compressed air and wipe clean.  Use only lintfree cloths. Gear Housing Assembly (1, figure 3) The    chamber    bores    and    bottoms    around    the    shaft bushings    (3)    should    be    polished    and    not    rough    or grooved.  If the bushing bores are yellow-bronze, replace them and investigate the cause of wear. The   flat   surfaces   at   each   end   of   the   gear   housing assembly (1) should be flat and free of nicks or burrs that could cause misalignment or leaks. Bushings (3, figure 3) The  inside  of  the  bushings  should  be  gray  with  some bronze   showing   through.      If   significant   yellow-bronze shows, replace the bushings. Inspect   drive   shaft   (11)   for   corresponding   wear   and replace as required. Gears (7 & 8, figure 3) The drive gear (8) and idler gear (7) should have straight tips without nicks; square tooth ends and a smooth even polish  on  the  teeth  and  end  faces.    Check  for  cracks between   the   drive   gear   keyway   and   gear   tooth   root. Replace the gear if cracks are present. Bearing Housing (9, figure 3) The surface near the gears should show two interconnecting polished circles without a step. The  bottom  of  the  o-ring  groove  should  be  smooth  as should the rest of the flat surface. The bore for the drive shaft seal (inside of the seal gland [16] ) should  be  smooth  or  oil  leakage  may  occur.    The bore in which the seal gland fits should also be smooth. Shake the bearing housing and a rattle should be 10

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