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8-5. DRUM, HUB, AND WHEEL BEARINGS MAINTENANCE
TM   9-2320-289-20 8-4. ROTOR AND WHEEL BEARINGS MAINTENANCE (Con’t). WARNING The  tapered  end  of  inner  wheel  bearing  assembly  must  be  facing  toward  the outboard  (cap  end)  of   axle  shaft.  The  tapered   end  of   the  outer  wheel bearing   assembly   must   be   facing   toward   the   inboard   (splined   end)   of   the axle   shaft.   Failure   to   follow   this   warning   may   force   wheel   off   truck   during operation,  causing  serious  injury  or  death  to  personnel. NOTE Apply grease to wheel bearing assemblies before installation. 3. Press  6  or  8  wheel   studs   (10)   into   rotor   (9)   if   removed.   Drive   inner   race   (20)   and   outer   race   (8) into   rotor   with   soft-faced   drift   until   fully   seated.   Install   inner   wheel   bearing   (19)   and   new   seal   (18) on   rotor.   Install   rotor   on   spindle   (15).   Install   outer   wheel   bearing   (7). 4. Position   inner   adjusting   nut   (5)   with   pin   facing   outward   and   tighten   to   50   lb.-ft.   (68   N•m)   while turning   rotor   (9)   to   seat   wheel   bearing   assemblies.   Loosen   inner   adjusting   nut   and   tighten   to 50   Ib.-ft.   (68   N•m).   Back   off   inner   adjusting   nut   far   enough   to   install   adjusting   lock   (6).   Position adjusting   lock   with   hole   on   inner   adjusting   nut   pin.   Install   outer   adjusting   nut   (5)   and   tighten   to 160   Ib.-ft.   (217   N•m). • Step  5  only  applies   to •  Ensure  that  end   of   key NOTE 1984,  M1009  trucks. (3) with threaded hole faces outward. 5. Position   adjusting   nut   (4)   and   tighten   to   50   Ib.-ft.   (68   N•m)   while   turning   rotor   (9)   to   seat   wheel bearing   assemblies.   Loosen   adjusting   nut   and   tighten   to   25   Ib.-ft.   (34   N•m).   Back   off   adjusting nut   to   nearest   slot   and   install   key   (3),   Install   snapring   (1)   and   washer   (2). NOTE Step  6  only   applies   to   1985-87,   M1009   trucks. 6. Position   adjusting   nut   (23)   and   tighten   to   50   Ib.-ft.   (68   N•m)   while   turning   rotor   (9)   to   seat   wheel bearing   assemblies.   Loosen   adjusting   nut   and   tighten   to   35   Ib.-ft.   (47   N•m).   Back   off   adjusting nut   3/8   turn.   Install   ring   (22)   with   tang   alined   to   slot   on   spindle   (15)   and   hole   alined   to   pin   on adjusting   nut.   Install   locking   nut   (21).   Tighten   locking   nut   to   160   Ib.-ft.   (217   N•m).   Install snapring   (1)   and   washer   (2). FOLLOW-ON   TASKS: •    lnstall    front    locking    hub.    (See    paragraph    8-3) •   Install   caliper.   (See   paragraph   7-11) Change 2 8-9

 

 

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