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Hydroboost Brake Conversion Hose Question

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Matt005

Farmall Cub
Joined
Oct 26, 2020
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The son and I started a hydroboost brake conversion this weekend. We need a little help with understanding the hoses. I bought the power steering pump from Anything Scout (https://anythingscout.com/collectio...17-power-steering-pump-with-hydroboost-return). The attached picture shows a hose connection port with a red plastic cap (#1). The Scouts stock hose connection would not thread into this. What do I need to make the connection from this port to the steering? Their is also two hose attachments (#2 and #3 on attached picture) and I am not sure where either of these are supposed to go? The attached schematic doesn't' really show this very well.

In general the more information about hose routing, what fittings I need to buy, etc. would help. Thanks


pumpnumbered.jpg
schematic.jpg
 

Darrel

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#1 is the high pressure output. #2 and #3 are the low pressure returns for the HB and the gear.

The two types of pressure hose fittings are o-ring and inverted flare. Can't tell you which type is hiding under the red cap. If your Scout is pre-1980 your gear originally was inverted flare.
 

Sammy

Y-Block King
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What year is your Scout? 1980 models came with o rings on the fittings, older models were flared. All the fittings on the hydroboost should be o rings.
 

Matt005

Farmall Cub
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#1 is the high pressure output. #2 and #3 are the low pressure returns for the HB and the gear.

The two types of pressure hose fittings are o-ring and inverted flare. Can't tell you which type is hiding under the red cap. If your Scout is pre-1980 your gear originally was inverted flare.
It is a 1980. Does it matter how you hook up the low pressure hoses?
 

Darrel

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No. Hold on, we're getting to that. Can you confirm that your factory Scout hose has o-rings on the ends?
 

Matt005

Farmall Cub
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No. Hold on, we're getting to that. Can you confirm that your factory Scout hose has o-rings on the ends?
Yes, it appears to be the o-ring style
 

Attachments

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  • pumpport.jpg
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Darrel

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Ok. What I would do is remove the pressure valve from your Anything Scout pump (the large 1.XX inch fitting under the red cap) and replace it with the pressure valve out of the factory Scout pump. That will change the Anything Scout pump from flare to O-ring style.

Once that's done run a pressure hose from the pump to the HB. Then another pressure hose from the HB to the gear. I've posted part numbers for these in the past. Then run your return hoses. Use hose clamps with a screw and nut sometimes called fuel injection hose clamps instead of worm gear hose clamps.

If that 1993 HB is out of an Astrovan use this adapter bracket. https://www.ihpartsamerica.com/store/CPT-SII-HYDBST-ADPTR.html
 

Matt005

Farmall Cub
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Ok. What I would do is remove the pressure valve from your Anything Scout pump (the large 1.XX inch fitting under the red cap) and replace it with the pressure valve out of the factory Scout pump. That will change the Anything Scout pump from flare to O-ring style.

Once that's done run a pressure hose from the pump to the HB. Then another pressure hose from the HB to the gear. I've posted part numbers for these in the past. Then run your return hoses. Use hose clamps with a screw and nut sometimes called fuel injection hose clamps instead of worm gear hose clamps.

If that 1993 HB is out of an Astrovan use this adapter bracket. https://www.ihpartsamerica.com/store/CPT-SII-HYDBST-ADPTR.html
Really appreciate you taking time to help guide me through this. I have spent a few hours poking around the internet (including this site) trying to get a better understanding of what hoses I would need. I'm sure you all get tired of us newbies asking the same old questions, but we do appreciate it! To that point, knowing how long I tried finding the hose question/answer, would you be able to direct me a little more to the post of the part numbers and location of where I can get those hoses?

Thanks again for all your help!
 

Darrel

Lives in an IH Dealership
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Try a search with my user name and "hose" for the keyword.
 

Matt005

Farmall Cub
Joined
Oct 26, 2020
Messages
17
Points
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#1 is the high pressure output. #2 and #3 are the low pressure returns for the HB and the gear.

The two types of pressure hose fittings are o-ring and inverted flare. Can't tell you which type is hiding under the red cap. If your Scout is pre-1980 your gear originally was inverted flare.
Is it fair to say that having two ports on the power steering pump (#2 and #3 in above picture) means that the low pressure lines do not T off like shown in the above diagram? Should one port go to low pressure hook up on the steering gear, and the other port go to the low pressure hook up on the master cylinder? If so does it matter which port goes where? Just want to be sure before cutting the hoses. Thanks
 

Darrel

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That's correct, you can connect either low pressure return hose to either of those tubes. They just dump into the canister.
 
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