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Re: Repair kit for hydrovac!
beacon #1402139 Sat Mar 20 2021 05:43 AM
Joined: Sep 2018
Posts: 101
N
'Bolter
https://www.stovebolt.com/ubbthread...es-of-new-hydrovac-unit.html#Post1342558

I attached a link to a thread I had put together with photos of a new manufactured unit.

It is chinese made and there are certain things to keep an eye out for. I tore mine right down because the brake line fittings installed into the end cap were threaded to accept metric threads. The old fittings I had would not swap over to the new end cap as the end cap was also threaded differently. I ended up using my old end plate, then re-used my brake lines as they were with out a bunch of adapters.

When I had the new chinese built unit open; I found the main rod/shaft that is bolted to the large power piston had more play than I would have liked. So I also swapped all of the rubber sealing components onto the old power piston/rod assambly and set the new power piston/rod off to the side.

A lot of the internal components in the new units are made of plastic of some kind as compared to metal in the old unit. There are also differences in the compression springs used in the new unit.

I ended up building one very good unit out of both the new and the old units.

Last edited by Noonan; Sat Mar 20 2021 05:46 AM.
Re: Repair kit for hydrovac!
beacon #1402199 Sat Mar 20 2021 05:09 PM
Joined: Dec 2008
Posts: 402
F
Shop Shark
I have a hydrovac that I purchased from Napa a few years ago. Ran it for a short period before converting my brake system in my 56 Chevy 1 1/2 ton short school bus. I'd part with it at a fair price. PM me if interested.


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Re: Repair kit for hydrovac!
beacon #1402327 Sun Mar 21 2021 07:37 AM
Joined: Jan 2021
Posts: 6
M
New Guy
Fclaridge I’m interested but cannot PM members until I’m old enough (61 right now). Please PM me so we can discuss the hydrovac.

Re: Repair kit for hydrovac!
beacon #1402379 Sun Mar 21 2021 06:18 PM
Joined: Jan 2021
Posts: 6
M
New Guy
PM me

Re: Repair kit for hydrovac!
beacon #1403019 Thu Mar 25 2021 09:38 PM
Joined: Dec 2020
Posts: 113
2
'Bolter
I am in the process of seeing if I can find someone that will rebuild our hydrovac for our 1956 6400. I would not be afraid of doing it myself, but I have not found any place that has anything close to that age. Any timely updates to this post would be greatly appreciated.

Steve

Re: Repair kit for hydrovac!
beacon #1403421 Sun Mar 28 2021 02:33 PM
Joined: Dec 2020
Posts: 113
2
'Bolter
Just a FYI, I.took our hydrovac to a place in Chicago, "Rebuilders Inc."yesterday. They said they should have to done this week. I could not find a rebuild kit anywhere.

Steve

Re: Repair kit for hydrovac!
beacon #1403491 Sun Mar 28 2021 07:10 PM
Joined: Aug 2018
Posts: 607
2
'Bolter
hi 20Mercman,
i didn't see your post before now,
FYI, i called this company a couple years ago
http://www.remaninc.com/how_to_find_parts

they put together a custom kit for me to rebuild a 374000 remote booster
at the time it was $115
best of luck
-s

Re: Repair kit for hydrovac!
beacon #1405518 Sat Apr 10 2021 10:22 PM
Joined: Dec 2020
Posts: 113
2
'Bolter
We picked up our hydrovac in Chicago today. The unit looks like new. $235 for the overhaul. They said parts are getting hard to come by.

Steve

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