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Hydrovac rebuild... any tips?
Posted: Thu Aug 10, 2006 3:21 pm
by pfarber
I have a rebuild kit in the mail.... and absolutly no information on how to do a hydrovac rebuild.
It looks like a lot of simply gasket/seal replacment.... but any other GOTCHA's?
Anyone have a TM that covers Hydrovac rebuild?
Posted: Fri Sep 29, 2006 8:38 pm
by wartruk44
Go to Autozone and order a Hydrovac for a 1 ton GMC 1947. It is $172.00 plus core with a lifetime warranty and it works great!!
1 ton hydrovac
Posted: Sat Sep 30, 2006 9:56 am
by 42cckw
Are the hydrovac's the same size
One would think a hydro for a one ton chevy feeding 4 brake cylinders is not the same as a 2 1/2 ton GMC feeding 6 cylinders . Plus I would say there is a big weight difference between the two trucks, I would aire on the side of caution when I push my brake pedal I want to stop
$172.00 with a life time warranty sounds great but are we talking apples for apples here.
Posted: Sat Sep 30, 2006 10:58 am
by Karoshi
I agree whole heartedly. The only saving grace is that presumably these trucks are to be driven unladen and not commercially with a load. Therefore the smaller HydroVac MIGHT be suitable.
Its not a chance I would take though.
Posted: Sat Sep 30, 2006 5:48 pm
by dr deuce
You might not have enough juice to run all 6 cylinders.
There is a more modern diaphram type that I use in place of the piston type original
Posted: Thu Oct 05, 2006 5:07 pm
by wartruk44
I have installed this single piston on my 21/2 ton and it will lock up all 10 wheels. Since I will not be hauling the weight I feel good about it. I researched this for months before I made a decision. I found a company that will rebuild the type II for about $500.00.