Question about 1989 GMC Suburban

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1989 4X4 SUBURBAN FRONT ROTORS

Do I have to remove the hubs and expose the bearings before I can remove the front rotors and is there somewhere on the net I can go to find a diagram for this job.

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I have had a similar problem on my 82 Jimmy when I wanted to replace my 6 lugs (bolts) on the wheel. I guess, you have to remove the hubs to bring out the rotors. I myself searched on the net for a detailed pic, but did not succeed. I however saw my mechanic do it on mine. You need to carefully remove the pins, sleeves, springs etc. in the hub. Some clippings / locks / pins might seem hard to take out, but little inspection would make it easier. Some special tools such as a pointed tip plier might be required to release certain pins.

Anyway, best of luck :-)


By the way, I am having problems with my 4X4 lately. I got the lugs changed and the mechanic seems to have mis installed the hubs. Now I sometimes have a grinding sound underneath, a couple of times (even when 2 wheeling and hubs released), Today the wheels did not lock and I could not get out of sand. To my embarrassment, a land cruiser had to pull me out. Can some one help ?

Posted on Nov 28, 2008

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Throw stupid autolok hubs away they will strand or kill u replace with real hubs ya get out and lock MANUALLY...auto loks are for housewives in shopping center parking lots. warn makes good CHEAP lokkerz that all the big kids use out in the dirt and mud...

Posted on Feb 26, 2009

  • hix7 Feb 26, 2009

    the hubs ARE the rotors ,...buy new bearings seals and grease and throw out everything but the spindle and maybe yer calipers, yer new hub/rotor should already have new races pressed into it , the job is easy and fun!BTW if yer rotors are shot yer calipers are probably shot too...throw in flex brake lines and everything is new and minty fresh.....

  • hix7 Feb 28, 2009

    detailed diagram...haynes chapter 8 section 25for hubs........rotor/hub chapter1 section 39.10 manual24064(420) full size pickups 67-87,blazer/suburban67-91

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Removal & Installation Front To Remove:
The front wheel bearings are not serviced separately. If the front wheel bearings are defective, the hub and bearing assembly must be replaced.
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Lubricate the threads on the halfshaft with clean engine oil.
  3. Remove or disconnect the following:
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    • Hub and bearing assembly
To Install:
Exploded view of the front hub mounting and related components 7922xg36.gif

  1. Install or connect the following:
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    • Hub and bearing assembly to the backing plate. Torque the 3 bolts alternately and evenly to 70 ft. lbs. (95 Nm).
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Section 05-03C: Wheel Hubs and Bearings, Front Wheels, 4-Wheel Drive 1997 F-250/350/Super Duty Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 05/17/2000 Locking Hubs, Manual

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Item Part Number Description 1 3A329 Halfshaft 2 3C132 Rolling Diaphragm Seal (Axle) 3 3299 Integral Spacer Needle Bearing Seal 4 3123 Bearing, Caged Needle 5 3105 Front Wheel Spindle 6 1190 Wheel Hub Grease Seal 7 4221 Inner Wheel Bearing (with Bearing Cup 4222) 8 1102 Front Disc Brake Hub and Rotor 9 4221 Outer Wheel Bearing (with Bearing Cup 4222) 10 - Pin (Part of 1195) 11 1195 Inner Lock Nut 12 1198 Lockwasher 13 1197 Outer Lock Nut 14 - Steel Thrust Washer
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  1. Remove the lock ring seated in the groove of the front disc brake hub and rotor (1102).


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  1. Remove the hub body assembly from the front disc brake hub and rotor. If the body is difficult to remove, install two capscrews and pull the body assembly out of the front disc brake hub and rotor.


    f4659d.gif

Installation
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    • Hub and bearing assembly
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    Wheel lug nut tightening sequence gm_trk_sub15_wheel_lug_nut_tight_seq.gif

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