diving into the brakes once again

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old man
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Location: New Ulm, MN

diving into the brakes once again

Post by old man » Tue Aug 01, 2017 9:10 pm

back round. until last sunday I had good brakes. checked pads good settings good. fluid level good. went out for a drive and they worked just fine. Monday I had the grand kids on board and out for a short drive. first stop sign not brakes!!! first reaction is oh Crimp One Off. 2nd is garb the e-brake.
got it home in the shop, can't find any leaks, pulled the drums off still looking good, no leaks.
The only thing I can think of is there might be a collapsed line seeing as they are older. Will start tracing them back tomorrow morning.
any advise for anything else to look for?

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artificer
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Re: diving into the brakes once again

Post by artificer » Tue Aug 01, 2017 9:44 pm

Brakes were all good, then no brakes, pedal goes to the floor & reservoir is full of fluid? Very indicative of master cylinder primary cup failure!
John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.

old man
Sergeant Major of the Gee
Sergeant Major of the Gee
Posts: 490
Joined: Fri Mar 07, 2014 8:32 pm
Location: New Ulm, MN

Re: diving into the brakes once again

Post by old man » Wed Aug 02, 2017 3:07 pm

Sure enough that is what it was, the cup failed, and the rest was in bad shape, so replace the master cylinder. better safe
thank you, you were right on

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artificer
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Location: Gold Coast SE QLD AUSTRALIA

Re: diving into the brakes once again

Post by artificer » Wed Aug 02, 2017 3:45 pm

Good time to replace all flexible brake lines....over 15yo or age unknown should be replaced with new manufacture & not NOS.
Parker Hannifin dealers make to order & product is guaranteed to meet or exceed DOT spec's.
John GIBBINS Member Institute of Automotive Mechanical Engineers [Ret], ASE Master Medium/Heavy Truck & Auto Technician USA -2002 Licensed Motor Mech NSW MVIC 49593 Current 2015
TO DIAGNOSE, TROUBLESHOOT OR FAULT FIND ANY AUTO SYSTEM....
Understand how system parts interact with one another. GOOD parts can then be established & the NOT GOOD problem/s part/s isolated for repair or replacement.

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