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Mod | | | Forums66 Topics128,157 Posts1,056,887 Members48,458 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Jul 2011 Posts: 5 New Guy | | New Guy Joined: Jul 2011 Posts: 5 | Any help would be appreciated to better understand the following circumstance.
The brakes on my 1958 Viking C40 were working great. Then work was done on something unrelated, but the truck idled for 15-20 minutes. Later when trying to move the truck there were absolutely no brakes. The master cylinder was bone dry, but no evidence of leaks on the ground or stains on the tires. After filling the master cylinder the brakes needed to be pumped to respond. But after using a pressure bleeder, the pedel is back hard and the brakes are functioning as before. No leaks were found while the system was on pressure bleeding.
Is there some way the fluid could get sucked onto the vacuum side of the Hydrovac? This is a very discomforting mystery.....to have brakes and then have them suddenly not work with no apparent reason.
Need help. Thanks!
Keith | | |
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