Hey everyone, so I jus recently found out that my truck is an f6 from a reproduction owners manual I bought. Well, I lost the manual for now and one of my wheel cylinders gave out on me yesterday, I'm jus trying to figure out what the diameter of my wheel cylinders is so i can get rebuild parts for it on rockauto.com

 

You didn't say if it was front or rear. I don't have a part number for rebuild kits but I will list the # for the wheel cylinders.
The front wheel cylinder is 1 3/8" # 92Y 2261. (same as the rear on an F3)
Jst Automotive, Lebanon, Tn has 2, CollectorsAutoSupply.com has several

The rear wheel cylinder is 1 1/2" #91T 2261
CollectorsAutoSupply.com has several, Wesley Obsolete Parts LIBERTY, KY has 1, Antique Auto Arlington Ford ARLINGTON, TX has 2.

Job Lots also has them. I bought 2 rears last year from Job Lots, they were $55 each. They also had the show linings.

 

I appreciate the sizes. I found this website rockauto.com, everything is super cheap. They have the rebuild kits for the wheel cylinders for like $8 and the whole wheel cylinder for $30

 

Are you sure they have the RIGHT kits and cylinders?

 

I'm not sure if the F6 is the same, but the only brake related part RockAuto has for my 51 F4 is the master cylinder. None of the wheel cylinders and no rebuild kits.

 

Hmm, interesting

My old Ford parts catalogs confirm the information Joe posted above, however:

• The specifications section in the back of the Shop Manual shows the front wheel cylinders as 1-1/4 inch
• The rebuild kits I bought from NAPA (by application) were 1-1/4 inch
• I bought replacement wheel cylinders from joblotauto.com and I am fairly certain they were 1-1/4 inch although I don't recall that I actually measured them.

I remember my 50 F5 came with an 1-1/4 cylinder on the front right side and 1-3/8 on the left. My 48 had identical front cylinder castings but one was bored 1-1/4 and the other 1-3/8. I figured someone had bored it out to do a cheap rebuild, but maybe this confusion has been around for a number of years.

 

Well from what I can tell the kit comes with a spring, two pistons, and two seals. They had a closeout sale on them for $4.25 a piece so i went ahead and bought one of each size since they were so cheap lol. I guess when they get here ill find out if theyre right.

 

I just replaced the two rear wheel cylinders on my 1952 F6 with these:

NAPA UP4511 Wheel Cylinder - Bore Size : 1 1/2",
Wheel Cylinder Line Thread Size : 1/2-20


I'm sure NAPA has a rebuild kit as well for them as well.

Oh, and don't be scared off that the computer doesn't list your 48 F6 as a compatible vehicle. Napa's computer database is very hit and miss on these old big trucks.

 

Please keep us posted. I'd love to know if they work.

 

It'll prolly be a week before they get here but keep you posted

 

For the most part, NAPA online database doesn't go bigger than the F3.

BTW, that looks like the same cylinders I got from JobLots.