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Re: 89 trooper hub wheel bearing problem??? [Re: bamashooter] #916233 11/18/08 03:56 AM
Joined: Jul 2008
Posts: 46
R
rhouser Offline OP
Getting the Wheeling Fever
reading in the service manual it says to use a spring scale to figure out if the hub nut is tight enough, is this the way it should be done or is there another trick?

Re: 89 trooper hub wheel bearing problem??? [Re: rhouser] #916234 11/18/08 05:56 AM
Joined: Apr 2008
Posts: 135
bamashooter Offline
Wheeler
I either found it online somewhere or I downloaded it from myisuzuparts.com. I think I found it somewhere other than my isuzu.

1. Just because the races are pressed in does not mean they're in good shape. Once you remove the bearings, inspect the races for scratches, burned areas, etc. If you determine the races need replacing, buy a matched set of bearings and races. Take all to a reputable machine shop and have them press the old races out and the new ones in. You can do this yourself; it's up to you.

2. Most people who choose to use the "spring scale" method (myself) use a cheap fish scale which can be found in the fishing section at Walmart and other stores.

3. After proper greasing and all the preliminary work, install the outer bearing.

4. Thread the locknut on fairly (pretty darn) tight where it's difficult to spin the hub. Loosen it to where it's fairly tight yet will turn with a bit of effort.

5. Spin the hub several times one direction and then the other.

6. Loosen the nut a little and do the spin routine again.

7. Repeat the tight/loose spin only routine 1 more time (not the cinch it down part).

8. The bearing should be seated after that repeated spinning is performed.

9. Tighten the nut enough where you can spin the hub and there is some obvious drag or resistance.

10. The fish scale should be reading at zero. If not, either on the front or back, turn the calibration screw to set the scale to zero.

11. Place the hook of the scale on a wheel stud which is at a right angle to the hub (12, 3, 6, 9:00 position).

12. Holding the scale with one hand and the hook on a stud. slowly rotate the hub. This is setting the preload of the bearing. The preload is anywhere between 3.5 and 4.75 lbs (arguably). I believe mine are set at 4 lbs.

13. You will need to tighten or loosen the nut a time or two setting this preload.

14. The preload should be set when you are able to begin to rotate the hub when the fish scale reading is 3.5-4.x lbs.

15. I do this at each of the 4 positions (12,3,6,9) to get a good feel and average.

16. If this is performed properly, you should be able to rotate the hub and feel a small drag and there should be no "looseness" to it.

17. When you're satisfied with the preload, install the lockwasher and 3 screws. One side of the washer screw holes is recessed. That side is the outside. Many times, you need to turn the locknut one way or another so the screws align with the screw holes in the locknut.

The end. <img src="/forums/images/graemlins/butwiggle.gif" alt="" />

Reply if you need clarification.

Last edited by bamashooter; 11/18/08 06:04 AM.
Re: 89 trooper hub wheel bearing problem??? [Re: bamashooter] #916235 11/18/08 06:24 AM
Joined: Apr 2000
Posts: 7,268
mlclark Offline
Isuzu Moderator
*****
Oh yeah, you need new bearings, inside and out. Those just ate themselves to dust. New bearings come with races, you don't replace just one or the other.

You will also need a wheel seal. I am also concerned that the inner bearing is still sitting on the spindle. Is it loose? It should not have come off like that because it means you a) pulled the grease seal off when you pulled the hub (was it a bit difficult?) or you pulled the bearing through the seal (not something I thought was possible). It should be a slip fit onto the spindle.

From the look of it, you also need a new cv shaft. It looks like the splines on the end are worn back about 1/2" inch? Is there a groove for a c-clip in the splines?

Michael

Re: 89 trooper hub wheel bearing problem??? [Re: mlclark] #916236 11/18/08 02:11 PM
Joined: Jul 2008
Posts: 46
R
rhouser Offline OP
Getting the Wheeling Fever
here are some more pics


[Linked Image]

[Linked Image]





[Linked Image]

[Linked Image]


[Linked Image]

Re: 89 trooper hub wheel bearing problem??? [Re: mlclark] #916237 11/18/08 02:14 PM
Joined: Jul 2008
Posts: 46
R
rhouser Offline OP
Getting the Wheeling Fever
is there a snap ring that goes on the very end?

not sure if i need a new cv shaft or not???

the fish scale thing still has me wondering

Re: 89 trooper hub wheel bearing problem??? [Re: rhouser] #916238 11/18/08 02:26 PM
Joined: Nov 2003
Posts: 298
Van Offline
Mudrunner
[Linked Image]

GEEEEZZZZZ, that's downright DANGEROUS. <img src="/forums/images/graemlins/scared.gif" alt="" />

With as many metal shavings that are shown, you would most definitely need a new/used hub and disc... and yes, there is a snap ring that goes on the end.

Van <img src="/forums/images/graemlins/patriot.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />


'94 Isuzu Pickup, 4x4
NEVER give up...
Re: 89 trooper hub wheel bearing problem??? [Re: Van] #916239 11/18/08 02:33 PM
Joined: Nov 2003
Posts: 298
Van Offline
Mudrunner
Here's another article w/pics that might help you out...
http://www.planetisuzoo.com/articles.htm/56

Van <img src="/forums/images/graemlins/patriot.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />


'94 Isuzu Pickup, 4x4
NEVER give up...
Re: 89 trooper hub wheel bearing problem??? [Re: Van] #916240 11/18/08 03:31 PM
Joined: Jul 2008
Posts: 46
R
rhouser Offline OP
Getting the Wheeling Fever
i think all the shavings are from the bearing that disingrated

Re: 89 trooper hub wheel bearing problem??? [Re: rhouser] #916241 11/18/08 03:53 PM
Joined: Jul 2008
Posts: 46
R
rhouser Offline OP
Getting the Wheeling Fever
does anyone have a hub and disc assembly that i can get? if i need one?

Re: 89 trooper hub wheel bearing problem??? [Re: rhouser] #916242 11/18/08 04:49 PM
Joined: Apr 2008
Posts: 135
bamashooter Offline
Wheeler
The recommendations for races, seals, etc is not an option. You're very far from being concerned with "the fish scale". Regarding finding parts, If they can't be found here, try this isuzu forum; http://forum.planetisuzoo.com/

In your photos, see the shaft sticking out? Near the end, on the smooth part, should be a groove which a circ clip sits in. Disregard that one; it's for auto locking hubs. A little bit in towards the hub, another groove is cut into the larger splined section. That groove takes a 26mm clip for those manual hubs you have. If you can't see that groove, try either pushing the shaft out from the back a little more. You can also thread a bolt into the end nearest you and pulling on the shaft.

Last edited by bamashooter; 11/18/08 04:49 PM.
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