slave cylinder question

johnh7

johnh7

Senior Member
Guys, I have purchased what I thought was a complete set of hardware to convert my 1938 Pickup to hydraulic brakes. It came with the clutch and brake pedal assembly, master cylinder and the complete backing plates including brake shoes and slave cylinders. I have taken it all apart to clean it up and I have found that three of the slave cylinders show 1 1/4 x 1 and one shows 1 1/8 x 1. Also the three don't have the "nipple" in the hole where the brake line screws into the cylinder. I took a picture to show what I am trying to describe. (see attached picture) My question is, are they a different design or is there a part missing from them?

Also which slave cylinder should be in front and what should be in back? I am referring to the measurement 1 1/8 vs 1 1/4. Any help is appreciated. I plan to rebuild these if the can be used, but obviously one is wrong compared to the other three. Maybe it would be better to just buy new ones from Macs?
 

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1 1/8" is rear 1 1/4" is early front. I believe these have all been superseded by 1 3/8 for the front. Not sure the 1 1/4" is available. The ones with the little nipple in the hole are rear, this is for the flared hard line. The ones with no nipple are front, these are for the flexible line, this seals on the flat of the cylinder with a copper washer.
Hope this helps,
Martin.
 
Get yourself some speed bleeders and you will find it so much easier to do the job, and every two years you can bleed your brakes [as you should] in 10mins by yourself , done, easy!
 
Talkwrench said:
Get yourself some speed bleeders and you will find it so much easier to do the job, and every two years you can bleed your brakes [as you should] in 10mins by yourself , done, easy!
Click to expand...

Talkwrench that is great advice. I looked them up and just ordered a set. Thanks
 
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