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Old 12-30-2013, 01:43 PM   #1
cclaeys
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Front Drum Wheel Cylinder

Trying to overhaul my front drum brakes and got everything apart, only to find that the cylinder that I removed doesn't jive with the replacement. The one removed was attached with 2 bolts, the new one has a hanger/loop that appears to just slide over the post/spring retainer on the backing plate. Just basic 11" drum brakes with the 2" shoes. Seems like everything I read says I have the right part, but is it just a press fit that is held on my the rest of the hardware, nothing is threaded or bolted on? Thanks!
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Old 12-30-2013, 06:53 PM   #2
jaros44sr
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Re: Front Drum Wheel Cylinder

Let me look it up in the service manual...what year?
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Old 12-30-2013, 07:02 PM   #3
cclaeys
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Re: Front Drum Wheel Cylinder

1970 Jimmy - 4x4

Last edited by cclaeys; 12-30-2013 at 07:22 PM.
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Old 12-30-2013, 07:17 PM   #4
cclaeys
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Re: Front Drum Wheel Cylinder

cant even find a part number that gives me confidence...I have seen 3/8 opening is required with locking front hubs, but the ones for trucks seem to have 7/16, I wish one time something would be easier than I thought it would be...If I didnt already dump a bunch of money into new ball joints, etc I would just go get a new disc axle and be done with it!
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Old 12-30-2013, 07:24 PM   #5
orangek5
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Re: Front Drum Wheel Cylinder

I had the same exact same problem take the old ones to Auto Zone or O'reillys and compare to 1969 Chevy Blazer NOT 1970 GMC Jimmy
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1970 Jimmy 4x4 IL6
1971 Jimmy 4x4 350ci v8
1971 SWB 327ci v8
1972 Short Stepside 305ci v8
1972 Blazer 2WD CST LS9 350ci 4sp
1999 4 Door LB 1 Ton Old Body Style 5.7 v8
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Old 12-30-2013, 08:17 PM   #6
cclaeys
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Re: Front Drum Wheel Cylinder

yep orangeK5 - that was it, should have just done that in the first place, thanks for the help!
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