IH PARTS AMERICA
Click Here!

Go Back   IH PARTS AMERICA > Tech Forums > Brake Tech
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read Photo Gallery IH Store Home

Reply
 
Thread Tools Display Modes
Old 07-23-2018, 04:54 AM   #1
chopperroxie
Junior Member
 
Join Date: Jul 2018
Member Number: 9327
Posts: 5
Default Rear disc brake conversion issues

Hey guys, I recently bought a rear disc brake conversion kit from IH Parts and installed it. The instructions were a bit vague but after a few hours of trial and error I got it done. I got a new MC and prop valve in the kit too and I installed them and tightened all the fittings down.

Now, my problem is bleeding. I can't for the the life of me get fluid to the rear at all. I had the rear drum brake working and all so it can't be the lines. Has anyone had this problem?

I read in the instructions about removing the caliper to get all the air out? I haven't done that yet, I was wanting to get some fluid out of the rear caliper bleeders before I did that.

Any advice on this?

Thanks
Corey

1972 IH Scout II 304 4 speed.
chopperroxie is offline   Reply With Quote
Old 07-23-2018, 06:17 AM   #2
Scoutboy74
Moderator
 
Scoutboy74's Avatar
 
Join Date: Apr 2008
Member Number: 453
Location: Daze Crick, Jefferson
Posts: 3,989
Default Re: Rear disc brake conversion issues

Did you bench bleed the master? That should be the first step anytime a new master is installed since that's where the fluid originates.
__________________
Favorite hobby...Driving Salma Hayek in my Scout

Coal Trickle - '99 Dodge Ram 2500 Q-Cab SWB 4x4 - 5.9L 24V CTD/NV4500
Hooty - '74 SII - 392/TF727/D20/3.73 D44's/Spartan FA/Krac-lok RA/RC 4" SUA/34x10.5 TSLs/33g Fuel/HFT 8k winch
Mongo - '71 1210 Std Cab 2WD - 345/TF727/RA17 D60 4.10 Trac-lok - "Mongo love candy! Duh, huh, huh!"
Scoutboy74 is offline   Reply With Quote
Old 07-23-2018, 06:24 AM   #3
chopperroxie
Junior Member
 
Join Date: Jul 2018
Member Number: 9327
Posts: 5
Default Re: Rear disc brake conversion issues

Yes, I bench bled the master.
Thanks for the reply
chopperroxie is offline   Reply With Quote
Old 07-23-2018, 11:20 AM   #4
Winchested
Junior Member
 
Join Date: Jul 2018
Member Number: 9303
Posts: 20
Default Re: Rear disc brake conversion issues

Are you vacuum bleeding them?
Winchested is offline   Reply With Quote
Old 07-23-2018, 11:23 AM   #5
chopperroxie
Junior Member
 
Join Date: Jul 2018
Member Number: 9327
Posts: 5
Default Re: Rear disc brake conversion issues

No just regular bleeding with someone else pumping the brakes. I get fluid from the front but nothing from the rears.
chopperroxie is offline   Reply With Quote
Old 07-23-2018, 12:03 PM   #6
Winchested
Junior Member
 
Join Date: Jul 2018
Member Number: 9303
Posts: 20
Default Re: Rear disc brake conversion issues

Pull the line off the prop valve and make sure you're getting fluid past it. Then pull the rear rubber line and make sure you're getting fluid past it.

If the level in your master isn't going down your master isn't bled fully or somewhere past that isn't allowing fluid past.

Last edited by Winchested; 07-23-2018 at 12:47 PM..
Winchested is offline   Reply With Quote
Old 07-23-2018, 04:06 PM   #7
Robert Kenney
IHPA Tech Moderator
 
Robert Kenney's Avatar
 
Join Date: Aug 2008
Member Number: 543
Location: So Cal
Age: 49
Posts: 3,294
Default Re: Rear disc brake conversion issues

Assuming it is an adjustable rear prop valve, crank the adjuster in 1/2 of its range and try to bleed.
__________________
Robert Kenney

People preach " Don't over think life, just go where it takes you". But I can't help but think of the Wise Ancient Mariner who looks toward the horizon for any sign of storm clouds.
Robert Kenney is offline   Reply With Quote
Old 07-24-2018, 03:41 AM   #8
chopperroxie
Junior Member
 
Join Date: Jul 2018
Member Number: 9327
Posts: 5
Default Re: Rear disc brake conversion issues

Itís not an adjustable prop valve, so nothing to be done there.
@winchested, Iím going to try doing that tonight and see what I have, thatís a good idea. Thank you.
chopperroxie is offline   Reply With Quote
Old 07-26-2018, 05:39 AM   #9
chopperroxie
Junior Member
 
Join Date: Jul 2018
Member Number: 9327
Posts: 5
Default Re: Rear disc brake conversion issues

So I took the MC off and did a complete re-bleed of it and put it back on. I went through and tightened all the fittings up too. I decided to go with the Motive power bleeder since I couldn't find anyone with a strong enough leg to pump the brakes for me continually.

Well it finally bled and I was able to get the rear brakes working fine.
Thanks so much for all your help.

Corey
chopperroxie is offline   Reply With Quote
Old 07-26-2018, 02:10 PM   #10
Winchested
Junior Member
 
Join Date: Jul 2018
Member Number: 9303
Posts: 20
Default Re: Rear disc brake conversion issues

Great news!
Winchested is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 03:51 PM.