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Problem with XC 4 wheel disc brakes 

 

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 Post subject: Re: Problem with XC 4 wheel disc brakes
Posted: Fri May 08, 2009 8:48 pm 
Oompa Loompa
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Thanks mate, I believe youre right. Got it all back together and it's still the same. I have managed to get a really good pedal though by lubricating the front caliper pistons. The front pads were retracting about 2mm away from the rotor as the rubber oring seal was pulling the piston back. The rear wheels are not getting hot any more since I have fixed the front calipers, must have just been working too hard. The only problem I have now is the rears locking up and front not.
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 Post subject: Re: Problem with XC 4 wheel disc brakes
Posted: Sat May 09, 2009 12:35 pm 
Getting Side Ways
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Power: 161 rwkw

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XCMUZ wrote:
I worked for a ford dealer about 15 years ago, the drum/disc master cylinder was the same part number. However the V8 and 6cyl had different differential valve pressures. These valves were a small green annodized valve which did their stuff. (All XC V8's had discs fitted from the factory.)

But, we seen on more than one occasion where someone had fitted a 6 cyl master cyl to a V8 and sure enough the rears will lock every time. This is because V8's are much heavier over the front end.


You mean 302's got drum rear, and 351's got disc rear, same as XD & XE,

 

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 Post subject: Re: Problem with XC 4 wheel disc brakes
Posted: Sat Jun 06, 2009 9:33 am 
Getting Side Ways
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cjh wrote:
XCMUZ wrote:
I worked for a ford dealer about 15 years ago, the drum/disc master cylinder was the same part number. However the V8 and 6cyl had different differential valve pressures. These valves were a small green annodized valve which did their stuff. (All XC V8's had discs fitted from the factory.)

But, we seen on more than one occasion where someone had fitted a 6 cyl master cyl to a V8 and sure enough the rears will lock every time. This is because V8's are much heavier over the front end.


You mean 302's got drum rear, and 351's got disc rear, same as XD & XE,

This is what I an thinking too because genuine rebuild kits were definitely different for disc and drum rear.
I have been burnt to many times by parts shops stating there is no difference with certain parts, don't believe non factory manuals either, especially Ellery's as they are over priced cheap toilet paper.

 

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