When installing a brake booster on our bumpsides it generally easier to mount the booster brackets to the firewall first or to mount them to the booster first?...or about the same?

The booster I'm mounting is the Bendix 5473112 dual diaphragm booster (aka the Ultraranger special )

thanks,
Michael

 

I loosely mount the brackets to the firewall, stab the booster onto the brackets, hook up the input rod to the brake pedal then tighten all bolts/nuts on the booster/brackets.

Some other approach may be better for others. This is just how I do it.

Does your booster have a fixed (non-adjustable) input rod or does it have the FT8 code adjustable input rod?

 

That's the approach I was planning on taking, but wanting to hear how others have done it. My booster has the fixed input rod.

 

Mine does too but, the dual diaphragm booster I installed on a '72 a few months ago had an adjustable input rod.

Non-adjustable input rod.



Adjustable input rod.



FT8 code on rod.

 

Ok. Got the booster on. Do I need to adjust the booster output rod before installing the master cylinder? If so, how?

I am using a cast iron master cylinder from a '78 F350 with a 1 1/16 bore. I am aware of the aluminum master cylinder you used and it is very nice, but I wanted to stick with something a bit more original looking.

 

http://redirect.viglink.com/?format=...FMMBAK-1r1.pdf

 

Excellent info as always. Thanks Ultra!

 

The primary port size on that '78/'79 1-1/16" cast iron MC is 3/8"-24. This is the standard fitting size for 3/16" brake tubing.

The secondary port fitting size is 7/16"-24 for 3/16" diameter tubing. This is not a common fitting size that most parts stores would carry.

The SAE 7/16"-24 inverted flare fitting (color code red), for 3/16" diameter tubing, is available through Classic Tube under part number ST8006.

Link to the 7/16"-24 fitting.
Search results for: 'st8006'

Other specialty sized fittings Ford used on 3/16" diameter brake tubing is 1/2"-20 (ST8007) and 9/16"-18 (ST8010).

Left to right: 9/16"-18, 1/2"-20 and 7/16"-24 SAE inverted flare fittings on 3/16" diameter brake tubing.



With the new, correct, direct-connection fittings available, there's no reason to use ugly line fitting adapters.

 

Thanks Ultra! I've seen your previous posts on those fittings and plan to orders some, along with some brake line armor guard. I just need to count how many 7/16 fittings I need first. I know that the combo valve I'm using (the chevy style bought from a bronco vendor) has at least 1, possibly 2 (need to count them when I get home) 7/16 fittings as well.

Do you order your 3/8 fittings from classic tube as well or just buy them locally?

You said you like to buy your sticks of 3/8 tubing locally, correct?... any particular local vendor you like better? (I have autozone, orielly, advance, and napa near me).

 

If you get sticks of 3/16" tubing from the parts store, there will be (2) 3/8"-24 fittings already on the tubing. The 3/8"-24 fittings are also available individually from the parts stores. The other, larger sized fittings will most likely not be available through the parts stores.

I buy 60" sticks of 3/16" brake tubing from the parts store and then bend, cut it to length and then flare the end.

The tubing from my local O'Reilly store seems to be more bent/crooked in their handling of it then the tubing I get from my local Bumper to Bumper auto supply store. --O'Reillys must have gorillas putting that stuff on the tubing rack. It's difficult to bend accurate lines if the tubing isn't straight to start with.

--Also, beware of 10mm fittings on 3/16" tubing. If you're needing SAE 3/8"-24 fittings on the tubing, look on the tag affixed to it to be sure they are 3/8"-24 fittings and not 10mm. I got bitten by this on the last install I recently did on the '72 F100.