Hydraulic cylinder rebuilds

[peteatgr]

Many thanks to everyone who helped me with my eledtrical problems in getting my long slumbering BJ8 going again. It is now up and running very nicely, and so I have moved on to rebuilding the brake master cylinder and the clutch master and slave cylinders. Are the generally available rebuild kits complete enough to do a good job or is it a better value to buy a complete new cylinder? Do the bodies and shafts on these cylinders wear to the point where the entire thing should be replaced?

 

[Keoke]

HI PeteatGR, Yes the rebuild kits are quite adequate to refurbish the cylinders.Generally all the cylinders require is a little Honing to clean them up and then install the kits.However, the clevis and its pin may be severly worn and need replacing. In the event you find the body to be unuseable I would send it out to be resleeved then rebuild it---Fwiw---Keoke

 

[anthony7777]

"and you can cut a bunch of inches of the mounting bolts as well"[keoke]-keoke is correct of course,i just did both of mine a couple of days ago,the bigest problem ive seen people have is that they dont face the large seal in the propper direction, the drawings/diagrams that ive seen of this are not very clear,just take notice of what direction its facing,look at it this way,when you step on the clutch pedal you want compression, you want the seal to open up as it is pushed into the cylinder and tightening[sealing]the fluid in the cylinder pushing the fluid into the brake lines,if the seal is put in backwards,the fluid will escape around the seal and not cause compression,hence this seal should have its grooved side facing foward,towards the front of the car,its realy not difficult,ya do remove both the air filters,and use what ever length 1/4" extensions and socket your comfortable with for the lower bolts,working under the brake lines, ive seen guys try use ing open end wrenches for this,youll be discouraged very quickly!hay,you can always cut off some length of the bolts befor you replace them. /ubbthreads/images/graemlins/cheers.gif

 

[Dave Russell]

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Generally all the cylinders require is a little Honing to clean them up and then install the kits.

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If anyone cares, some of the wheel cylinders are hard anodized aluminum. It isn't really recommended to hone them. Cast iron is ok to hone. FWIW
D

 

[zblu]

I have the cast alloy type, had them bored out and s/s sleeves installed

 

[Hangtown Healey]

Trying to hone a hard anodized aluminum master cylinder generally results in a leak. The hard anodize is only a few .0001ths thick. Either get a new one or sleeve the old one.