Brake fittings for old forklift.

[Right-arm fast]

Hi,

We have a 1980 Yale diesel forklift that I have had to strip the LH brake drum down. In doing so i have had to undo the pipe fitting into the brake shoe actuator. Its a male compression fitting securing a steel pipe something more akin to a car brake system. I think its UNF but how would i find out for sure, and also the size so i can order the fittings for either end of the brake pipe on line? I also need the bleed nipple as it has corroded as the brake pipe fittings had. These brake line fittings are no longer available from Yale but all the brake parts are.

Any help most welcome.

RAF

 

[Netherfield]

Picture would help, but if you can remove the cylinder complete, take it to a good motor factors, they can try a fitting in to it.
Measure the pipe diameter, 3/16th or 1/4 inch probably.

Get hold of some UNF bolts to try for sizing.

 

[Right-arm fast]

Here is the RH side. Which are identical and less corroded.

 

[010101]

The brake pipe fittings tend to be 3/8 X 24 tpi or they can be metric 10mm X 1.0.

They are quite close to each other when you try to measure them with a thread pitch gauge or vernier calipers. You do need to try a fitting that you know is one or the other, like @Netherfield suggested.

 

[ridger]

Years ago but Morris minor ones fitted ours

 

[tomlad]

On reassembly put lots of copper slip on all pipe threads .

 

[Netherfield]

Looking on eBay I think that Yale is american, and by the age of yours very unlikely it's going to be metric sized pipe and fittings.

Buy a copy of Classic and vintage commercials, there are firms that advertise in there, old brake parts, as stated above, many times fit something else.

We'd Bonser fork truck, wheel cylinder started leaking, couldn't fing a new seal kit or cylinder the same, except one of the factors said 'this should do it' difference was the pipes were male fitting where the orginal had female fittings, worked perfectly, in fact i went back and got another for the other side just in case.

Tried one of the above advertisers, they could repair it by resleeving the cylinder and getting new seals made to suit, fine except it could take a couple of months before getting it returned.

 

[Right-arm fast]

Thanks for the info
the brake piston chamber is 3/8 unf on both the bleed screw and brake pipe. i think the other might end might be 7/16 as its slightly bigger but just got to double check

 

[tomlad]

Well worth buying brake nut spanners or whatever they're called
Hex ring with lump cut out

 

[Sausage]

Well worth buying brake nut spanners or whatever they're called
Hex ring with lump cut out

Flare spanners

 

[Netherfield]

Flare spanners

5/8ths or 16mm were ideal for injector pipes on the inline injection pumps.

 

[tomlad]

Using mine on fuel pipes other day very useful
7/16 - 1/2"