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Unread 04-13-2013, 06:52 PM   #1
rmullerkc
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1978 CJ7 
 
Join Date: Sep 2012
Location: Kansas City, MO
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78 cj7 brake problems

Last week I noticed the front calipers were not fully releasing. I looked at the master cylinder and noticed it was leaking, problem solved! NOT!
Put a remanufactured master on, it appears that the top is not sealing, fluid everywhere and both calipers still don't fully release. Bench bled master and bled brakes.
Dana 30 narrow track.
AMC 20 10" drums.
Manual brakes.
78 cj7

I'd appreciate any thoughts. Thanks in advance.

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Unread 04-13-2013, 07:56 PM   #2
LC77cj5
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1977 CJ5 
 
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Not sure about the leaking, but if the calipers are not releasing I would pull them off and clean them. If the piston does not move freely after cleaning buy some new calipers. I believe they were around 40 bucks a piece the last time I bought some.
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Unread 04-14-2013, 06:21 AM   #3
Centerfire
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1986 CJ7 
 
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Location: Bloomington, In
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and the rubber hose...
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Unread 04-14-2013, 12:41 PM   #4
rmullerkc
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Quote:
Originally Posted by LC77cj5 View Post
Not sure about the leaking, but if the calipers are not releasing I would pull them off and clean them. If the piston does not move freely after cleaning buy some new calipers. I believe they were around 40 bucks a piece the last time I bought some.
Thought about calipers but, both failing at same time? Not impossible by any stretch, just thinking too much.
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Unread 04-14-2013, 12:42 PM   #5
rmullerkc
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Quote:
Originally Posted by Centerfire View Post
and the rubber hose...
I guess your saying the brake line could be collapsed?
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Unread 04-14-2013, 03:16 PM   #6
Centerfire
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Yes. You would be surprised how often I run into that problem on various cars lately.
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Unread 04-15-2013, 06:54 AM   #7
rmullerkc
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[QUOTE=Centerfire;15295355]Yes. You would be surprised how often I run into that problem on various cars

I'll replace the calipers and hoses. Thanks.
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Unread 04-19-2013, 09:31 AM   #8
rmullerkc
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Quote:
Originally Posted by Centerfire View Post
Yes. You would be surprised how often I run into that problem on various cars lately.
I ended up replacing rotors, rubber brake hose, calipers and pads. I think it might be fixed. Thanks for help.
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