GM Truck Hydro-Boost Sealkit ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

82Diesel · 07-26-2019, 01:00 AM

I have an 82 K10 Diesel, It was Converted to Gas (SBC 305) But original Diesel had a hydro-boost! I've been converting it back over to diesel so I bought a 3/4 Ton Diesel truck that's the same year, engine besides being 2wd...

Anyhow, I think the one from my parts truck was leaking right behind the master So I was just gonna buy a brand new one unless I can get a Seal kit or rebuild kit for it Is that even possible for the Older 73-87 Hydro-Boosts, Do they have any part numbers on them or anything like that?? Thanks

**mongocanfly** · 07-26-2019, 03:28 AM

Yep...you can buy rebuild kits....check pirate jacks...

DieselSJ · 07-26-2019, 11:33 AM

I'm glad this came up. I went through 3 Duralast rebuilds before making them get one from another vendor a couple years ago. Even this one leaks constantly. Went to get a new one and they quit carrying the brand I got, and their house brand is out of stock with no ETA on availability. There was a thread here a while back about rebuilding them and it looked pretty straightforward. I just couldn't remember where to get the kit.

DieselSJ · 07-26-2019, 03:48 PM

For those of you wanting to try a rebuild on your own...

https://piratejack.net/hydro-boost-rebuild-kits/

kipps · 07-26-2019, 07:06 PM

Agree on piratejack for the rebuild kit.

Rebuild instructions here.

https://www.oilburners.net/threads/h...al-long.72688/

JHILDE · 07-26-2019, 07:08 PM

Quote:

Originally Posted by kipps

Agree on piratejack for the rebuild kit.

Rebuild instructions here.

https://www.oilburners.net/threads/h...al-long.72688/

Do you have a kit? I need the number off one of the seals.

kipps · 07-26-2019, 07:41 PM

Quote:

Originally Posted by JHILDE

Do you have a kit? I need the number off one of the seals.

Have already installed the kit into the hydroboost, but haven't installed the hydroboost into the truck yet.

Keith Seymore · 07-26-2019, 10:03 PM

Very timely; thanks for posting everyone.

K

82Diesel · 07-27-2019, 07:49 PM

Quote:

Originally Posted by DieselSJ

I'm glad this came up. I went through 3 Duralast rebuilds before making them get one from another vendor a couple years ago. Even this one leaks constantly. Went to get a new one and they quit carrying the brand I got, and their house brand is out of stock with no ETA on availability. There was a thread here a while back about rebuilding them and it looked pretty straightforward. I just couldn't remember where to get the kit.

Your welcome, It's been something I've been "Pondering" about in my mind for the last few months. I didn't want to ask too fast and then get the incorrect answers b/c i didn't look over my Unit very well or "Too-Fast" Ya know.

82Diesel · 07-27-2019, 07:51 PM

Quote:

Originally Posted by mongocanfly

Yep...you can buy rebuild kits....check pirate jacks...

Thanks, I will!

Honest Bob · 07-28-2019, 07:11 PM

I got a kit from Pirate Jack's because mine was leaking brake fluid on the floor in the cab. Fixed it right up.

DieselSJ · 07-29-2019, 05:27 PM

Quote:

Originally Posted by Honest Bob

I got a kit from Pirate Jack's because mine was leaking brake fluid on the floor in the cab. Fixed it right up.

So you can replace the brake rod seal? I read somewhere that you had to remove the rod to do that and the rod was crimped in place.

kipps · 07-29-2019, 05:38 PM

Quote:

Originally Posted by DieselSJ

So you can replace the brake rod seal? I read somewhere that you had to remove the rod to do that and the rod was crimped in place.

There's two styles. The older ones secured the rod with a rubber grommet. The newer ones crimped(staked) the rod in place. Instructions say to pull the grommet type out for repair, and to cut/reweld the staked rod when repairing. I cut and welded my staked rod.

After I did that, I ran across info saying that the staked rod could be pulled out as well. It just takes a lot more force, and some fabrication to make a puller. Restaking it is easy enough, it seems. Just use a small punch to crimp some metal back around the ball end of the shaft.

With a staked rod, it's going to require some metal work either way. If you have handy access to a welder, it's probably just as easy to cut and reweld.

Honest Bob · 07-30-2019, 12:54 PM

Quote:

Originally Posted by DieselSJ

So you can replace the brake rod seal? I read somewhere that you had to remove the rod to do that and the rod was crimped in place.

I was able to pop the rod out of mine and put it back it (maybe not recommended but I dont see how its going to fall out when reattached to the pedal).

I did this on my '75 which seems to have all kinds of weird slightly different quirky parts that dont seem to apply to most squarebodys.

DieselSJ · 07-30-2019, 01:25 PM

Thanks guys.

focusedontheprize · 09-14-2019, 11:50 AM

Found this thread and thank everyone for all the information. Just replaced all my power steering components and now I sprung a leak (I imagine the system was not operating at such a high efficiency previously and now it blew a seal).

Ordered the kit and am installing it this week.

82Diesel · 09-16-2019, 05:10 AM

Quote:

Originally Posted by focusedontheprize

Found this thread and thank everyone for all the information. Just replaced all my power steering components and now I sprung a leak (I imagine the system was not operating at such a high efficiency previously and now it blew a seal).

Ordered the kit and am installing it this week.

Dang, That sucks! I guess now i'll look online for a gasket kit for my P/S. I hope they sell one for my engine! (6.2L diesel) everythings getting obsolete these days for this engine...

Keith Seymore · 09-16-2019, 06:35 AM

Mine seems to have healed itself....

DieselSJ · 09-16-2019, 04:10 PM

Rebuilt mine finally. The kit was very easy to install. When I got it apart I noticed that the big main seal wasn't centered, and my piston has some very light scoring where it was contacting the bore. But pulled it apart and cleaned it all and replaced everything except the input seal. It works way better than it did...I do believe the rebuilder also missed hooking up the smaller piston correctly. I still have the slightest weep out the hole on the bottom between the master and the booster, but it is 95% better than it was.

Gunner41 · 02-07-2022, 02:00 PM

Yes Pirate jack has the kits to rebuild but my new issue is that it seems that some units have checkballs and little tiny rods and some dont. Now my problem is that I could of swore when I took it apart i kept an eye on it because of small parts making an escape that I may or may not be missing parts. I dont want to just slap it together and have it blow ($250-350). Any way to ID each Individual units?

07-26-2019, 01:00 AM	#1
82Diesel Registered User Join Date: Jun 2017 Location: USA Posts: 220	GM Truck Hydro-Boost Sealkit ? I have an 82 K10 Diesel, It was Converted to Gas (SBC 305) But original Diesel had a hydro-boost! I've been converting it back over to diesel so I bought a 3/4 Ton Diesel truck that's the same year, engine besides being 2wd... Anyhow, I think the one from my parts truck was leaking right behind the master So I was just gonna buy a brand new one unless I can get a Seal kit or rebuild kit for it Is that even possible for the Older 73-87 Hydro-Boosts, Do they have any part numbers on them or anything like that?? Thanks

07-26-2019, 03:28 AM	#2
mongocanfly Post Whore Join Date: May 2015 Location: Alabama Posts: 14,674	Re: GM Truck Hydro-Boost Sealkit ? Yep...you can buy rebuild kits....check pirate jacks... __________________ Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver

07-26-2019, 11:33 AM	#3
DieselSJ Registered User Join Date: Jun 2016 Location: Phoenix, AZ Posts: 574	Re: GM Truck Hydro-Boost Sealkit ? I'm glad this came up. I went through 3 Duralast rebuilds before making them get one from another vendor a couple years ago. Even this one leaks constantly. Went to get a new one and they quit carrying the brand I got, and their house brand is out of stock with no ETA on availability. There was a thread here a while back about rebuilding them and it looked pretty straightforward. I just couldn't remember where to get the kit. __________________ 87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4

07-26-2019, 03:48 PM	#4
DieselSJ Registered User Join Date: Jun 2016 Location: Phoenix, AZ Posts: 574	Re: GM Truck Hydro-Boost Sealkit ? For those of you wanting to try a rebuild on your own... https://piratejack.net/hydro-boost-rebuild-kits/ __________________ 87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4

07-26-2019, 07:06 PM	#5
kipps Registered User Join Date: Jul 2014 Location: North-central Virginia Posts: 1,104	Re: GM Truck Hydro-Boost Sealkit ? Agree on piratejack for the rebuild kit. Rebuild instructions here. https://www.oilburners.net/threads/h...al-long.72688/ __________________ 1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!

07-26-2019, 10:03 PM	#8
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,228	Re: GM Truck Hydro-Boost Sealkit ? Very timely; thanks for posting everyone. K __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

07-28-2019, 07:11 PM	#11
Honest Bob Registered User Join Date: Jan 2017 Location: Easton PA Posts: 219	Re: GM Truck Hydro-Boost Sealkit ? I got a kit from Pirate Jack's because mine was leaking brake fluid on the floor in the cab. Fixed it right up. __________________ 1975 GMC C35 - Junk yard survivor. 1986 Pampered Private - M1009

07-30-2019, 01:25 PM	#15
DieselSJ Registered User Join Date: Jun 2016 Location: Phoenix, AZ Posts: 574	Re: GM Truck Hydro-Boost Sealkit ? Thanks guys. __________________ 87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4

09-14-2019, 11:50 AM	#16
focusedontheprize Registered User Join Date: Feb 2012 Location: CA Posts: 846	Re: GM Truck Hydro-Boost Sealkit ? Found this thread and thank everyone for all the information. Just replaced all my power steering components and now I sprung a leak (I imagine the system was not operating at such a high efficiency previously and now it blew a seal). Ordered the kit and am installing it this week. __________________ "Dixie" - 1988 Chevrolet V30 CC DRW "3+3" \| 7.4L 454 (L19) \| TH400 \| 4" lift \| 35"s "Lucille" - 1949 Chevrolet 3100 (on hold)

09-16-2019, 06:35 AM	#18
Keith Seymore Registered User Join Date: May 2009 Location: Motor City Posts: 9,228	Re: GM Truck Hydro-Boost Sealkit ? Mine seems to have healed itself.... __________________ Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/

09-16-2019, 04:10 PM	#19
DieselSJ Registered User Join Date: Jun 2016 Location: Phoenix, AZ Posts: 574	Re: GM Truck Hydro-Boost Sealkit ? Rebuilt mine finally. The kit was very easy to install. When I got it apart I noticed that the big main seal wasn't centered, and my piston has some very light scoring where it was contacting the bore. But pulled it apart and cleaned it all and replaced everything except the input seal. It works way better than it did...I do believe the rebuilder also missed hooking up the smaller piston correctly. I still have the slightest weep out the hole on the bottom between the master and the booster, but it is 95% better than it was. __________________ 87 R30 CC Dually, TBI 454, NV4500, zero rust barn find 87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4

02-07-2022, 02:00 PM	#20
Gunner41 Registered User Join Date: May 2011 Location: San Jose, Ca Posts: 95	Re: GM Truck Hydro-Boost Sealkit ? Yes Pirate jack has the kits to rebuild but my new issue is that it seems that some units have checkballs and little tiny rods and some dont. Now my problem is that I could of swore when I took it apart i kept an eye on it because of small parts making an escape that I may or may not be missing parts. I dont want to just slap it together and have it blow ($250-350). Any way to ID each Individual units?



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