1946 dodge wf32 brake booster question?

[Truckatologist]

Good morning- hoping to get some guidance. I have a 46 wf 32 with power boosted rear brakes. I recently got them plumbed appropriately and working, and my rear brakes are very touchy. When the vacuum booster actuates it locks all 4 rear tires up with very little modulation available.

 

Are there any adjustments to the vacuum system or booster ? I have my shoes adjusted appropriately.

 

 

Any help is appreciated! Picture of the truck for fun below

 

 

[Dodgeb4ya]

Those are two beautiful trucks!

Need a picture of your factory? mid frame mounted booster... 

Is it a Midland booster?

 

[Truckatologist]

1 hour ago, Dodgeb4ya said:

Those are two beautiful trucks!

Need a picture of your factory? mid frame mounted booster... 

Is it a Midland booster?

 

Thanks- yes it is mid frame mounted, yes a midland booster. I don't have a picture on me but can post one when I get back to the truck in a few days. 

I appreciate any guidance you can offer!

 

[Truckatologist]

 

Unless if you can glean any information from this zoomed out, grainy picture, haha

 

thanks

[Dodgeb4ya]

I will look up the service bulletin on that booster....no adjustments that I know of.

It should supply boost to all four wheels.

[Truckatologist]

Hmmmm. My master cylinder high pressure line goes to a front splitter, which then has one line going to the front wheels, and another line feeding the mid ship booster. The output of the vacuum booster goes to just the rear axle. This is how it was plumbed when I got the truck, but it makes sense to have all the wheels boosted, but would take a lot of plumbing 

[Dodgeb4ya]

I will dig out the W series DT Service Sheets by tomorrow...

[Dodgeb4ya]

Some info...of course pics  ended up out of order..oh well. This is a free service

Edited April 12, 2022 by Dodgeb4ya

[Dodgeb4ya]

More pics..The line coming out of the top end of the booster slave cyl goes right over to a brass "T" block fitting that both the front and rear braje lines connect to. The booster sends boosted fluid to both front and rear brakes...not just to the rear brakes.

The master cylinder line connects directly to the fitting at the base of the slave cyl. area as shown in the pics.

[Truckatologist]

Well that is super helpful information thank you. Pretty clear that I need to do a significant re working of my lines to get boosted juice to all 4 corners. I can't imagine how well this things gonna stop. 

 

I appreciate you doing all the work looking for me, thanks