Where to find hydroboost replacement? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cam.man67 · 01-07-2014, 09:14 AM

My mechanic tested my brakes for me and found the hydroboost to the culprit to my intermittent pedal travel issues. Problem is, he say that he can't find a replacement HB for my truck. Evidently since it was an 350 diesel originally, the fittings are flared rather than sealed (or vice versa, I forget).

Anyways, long story short, does anybody know where I might be able to pick up one of these? I could have this rebuilt I guess, but I'll have to wait until spring til it's not my only driver.

**old Rusty C10** · 01-07-2014, 09:45 AM

Im thinking and I may be wrong but the hydroboost was the same thing used in the military trucks look for a guy who goes by the name Hilbilly wizard online he parts the CUCV trucks out

GM72K10 · 01-07-2014, 11:33 AM

Check ebay, put a wanted ad out on Steelsoldiers. I have like 5 sets laying around but I wouldn't guarantee any of them. PM if you're interested. Good Luck

Tx Firefighter · 01-07-2014, 12:10 PM

A1 Cardone lists both options for your truck at Rockauto, o ring and flare type. I catalogued it for the 79 model C10 with Olds diesel that is listed in your signature.

O ring seal type is a 527252

Seat type seal is a 527918

Price is 142 dollars including core charge for either of them. Both are also in stock. Cardone shows both of the choices fits 1979-1980 trucks only. You'll need to make sure which one you need and choose the appropriate number above.

INSIDIOUS '86 · 01-07-2014, 02:49 PM

Any competent shop should be able to have lines custom made in either O ring or flared style.

Low Elco · 01-07-2014, 04:16 PM

I understand they're fairly easily rebuilt. I've seen a couple of examples on here and it didn't look too bad.

here ya go-

http://67-72chevytrucks.com/vboard/s...d.php?t=578414

DirtyLarry · 01-07-2014, 04:23 PM

I don’t know if I agree with your mechanics assessment where the hydrobooster is your problem but any parts store can supply a reman hydrobooster. When a booster, vacuum or hydraulic, fails you lose brake pedal assistance and the pedal feels hard to step on. The problem is most people don’t understand hydroboost and tend to over complicate it in their thought process and blame it for issues that are really master cylinder related.

Napa lists both hydroboosters as well, which I believe are rebuild by A1 Cardone as TX Firefighter listed.

527252 w/O-ring type - MSRP $287.16
527918 w/ Seat Type Port – MSRP $305.60

Heck, even the dime store part stores like Autozone list both of these part numbers on their website. Those too are probably A1 Cardone rebuilds

cam.man67 · 01-07-2014, 04:56 PM

Quote:

Originally Posted by Tx Firefighter

A1 Cardone lists both options for your truck at Rockauto, o ring and flare type. I catalogued it for the 79 model C10 with Olds diesel that is listed in your signature.

O ring seal type is a 527252

Seat type seal is a 527918

Price is 142 dollars including core charge for either of them. Both are also in stock. Cardone shows both of the choices fits 1979-1980 trucks only. You'll need to make sure which one you need and choose the appropriate number above.

That, TX Firefighter! Very helpful.

I have to make sure before I order, but I'm almost positive I need the seat type. 'Preciate it!

*79 silverado* · 01-07-2014, 05:25 PM

Quote:

Originally Posted by cam.man67

That, TX Firefighter! Very helpful.

I have to make sure before I order, but I'm almost positive I need the seat type. 'Preciate it!

If you do order from rockauto, I still have a discount code from them you (or anyone else) can use if you want, its unlimited and non-specific for 5% off...

code is 1842460415907544 and will expire on January 12

Oldriginal86 · 01-07-2014, 11:07 PM

Try removing the power steering pump belt, then try the brakes. You should have 2 brake assists from the accumulator then your on just MC. If the pedal travel is the same, the HBoost isn't the issue. Special K just posted about this and found the MC bad. Like Larry said, don't think it's the hydro boost. Good luck.

**special-K** · 01-08-2014, 09:37 AM

Quote:

Originally Posted by DirtyLarry

Special-K didn’t understand hydroboost and tended to over complicate it in his thought process and blamed it for issues that were really master cylinder related.

Talking about me behind my back again?

DirtyLarry · 01-08-2014, 11:33 AM

Quote:

Originally Posted by special-K

Talking about me behind my back again?

I saw that and was like….what the heck! I didn’t write that! Funny guy

**special-K** · 01-08-2014, 02:53 PM

Well,maybe I did tweak it a bit. Allz ah knowz iz ah dun learnt muh lessin. I dun wint an edgycated muhself

01-07-2014, 09:14 AM	#1
cam.man67 Registered User Join Date: Jun 2010 Location: Jefferson, MD Posts: 2,397	Where to find hydroboost replacement? My mechanic tested my brakes for me and found the hydroboost to the culprit to my intermittent pedal travel issues. Problem is, he say that he can't find a replacement HB for my truck. Evidently since it was an 350 diesel originally, the fittings are flared rather than sealed (or vice versa, I forget). Anyways, long story short, does anybody know where I might be able to pick up one of these? I could have this rebuilt I guess, but I'll have to wait until spring til it's not my only driver. __________________ '68 Dodge Dart 270, 225, 904, 2.76--"Lucy" 1996 Gmc 1500 Z71, 350, 4l60e, 3.73s 1995 Jeep Wrangler Rio Grande 2.5, AX5, 4.10s 1989 Toyota Pickup 22re, auto, 3.73

01-07-2014, 09:45 AM	#2
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,277	Re: Where to find hydroboost replacement? Im thinking and I may be wrong but the hydroboost was the same thing used in the military trucks look for a guy who goes by the name Hilbilly wizard online he parts the CUCV trucks out __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

01-07-2014, 11:33 AM	#3
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,479	Re: Where to find hydroboost replacement? Check ebay, put a wanted ad out on Steelsoldiers. I have like 5 sets laying around but I wouldn't guarantee any of them. PM if you're interested. Good Luck __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck Last edited by GM72K10; 01-07-2014 at 03:06 PM.

01-07-2014, 12:10 PM	#4
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Where to find hydroboost replacement? A1 Cardone lists both options for your truck at Rockauto, o ring and flare type. I catalogued it for the 79 model C10 with Olds diesel that is listed in your signature. O ring seal type is a 527252 Seat type seal is a 527918 Price is 142 dollars including core charge for either of them. Both are also in stock. Cardone shows both of the choices fits 1979-1980 trucks only. You'll need to make sure which one you need and choose the appropriate number above. __________________ I'm on the Instagram- @Gearhead_Kevin

01-07-2014, 02:49 PM	#5
INSIDIOUS '86 Registered User Join Date: Jul 2009 Location: washington Posts: 4,178	Re: Where to find hydroboost replacement? Any competent shop should be able to have lines custom made in either O ring or flared style. __________________ 377 sbc thumpr cam autogear m23 muncie 3:73 Detroit trutrac 3''spintech prostreet mufflers xpipe 1 3/4 headers build thread !http://67-72chevytrucks.com/vboard/s...d.php?t=577217 Iroc gauge threadhttp://67-72chevytrucks.com/vboard/s...d.php?t=554511

01-07-2014, 04:16 PM	#6
Low Elco Registered User Join Date: Apr 2003 Location: Indep, MO Posts: 5,893	Re: Where to find hydroboost replacement? I understand they're fairly easily rebuilt. I've seen a couple of examples on here and it didn't look too bad. here ya go- http://67-72chevytrucks.com/vboard/s...d.php?t=578414 __________________ Boppa's Old Yeller Truck Build, Old Yeller's New Heart! Project Buzz Bomb Flyin' Low!

01-07-2014, 04:23 PM	#7
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Where to find hydroboost replacement? I don’t know if I agree with your mechanics assessment where the hydrobooster is your problem but any parts store can supply a reman hydrobooster. When a booster, vacuum or hydraulic, fails you lose brake pedal assistance and the pedal feels hard to step on. The problem is most people don’t understand hydroboost and tend to over complicate it in their thought process and blame it for issues that are really master cylinder related. Napa lists both hydroboosters as well, which I believe are rebuild by A1 Cardone as TX Firefighter listed. 527252 w/O-ring type - MSRP $287.16 527918 w/ Seat Type Port – MSRP $305.60 Heck, even the dime store part stores like Autozone list both of these part numbers on their website. Those too are probably A1 Cardone rebuilds __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

01-07-2014, 11:07 PM	#10
Oldriginal86 Registered User Join Date: Apr 2013 Location: Pasadena, Maryland Posts: 160	Re: Where to find hydroboost replacement? Try removing the power steering pump belt, then try the brakes. You should have 2 brake assists from the accumulator then your on just MC. If the pedal travel is the same, the HBoost isn't the issue. Special K just posted about this and found the MC bad. Like Larry said, don't think it's the hydro boost. Good luck.

01-08-2014, 02:53 PM	#13
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: Where to find hydroboost replacement? Well,maybe I did tweak it a bit. Allz ah knowz iz ah dun learnt muh lessin. I dun wint an edgycated muhself __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 01-08-2014 at 11:38 PM.



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