Thread: Front brake slave cylinder to flexible hose pipe query

Hello from Brisbane.

Finally getting around to tackling the reassembly of the brakes on my 88" truck and have a technical question.

The truck has (will have) the front and rear brakes from a six cylinder truck installed along with a dual line master cylinder and ancillaries. For the front brakes it needs new rigid pipes from the slave cylinders to the flexible hose join at the back of the swivel hub. The slave cylinders are for the 6 cylinder model front and rear.

Here's the question:

The parts catalogue shows the pipe as NRC4794 (RHS) and NRC4795 (LHS) for the 6 cylinder models and NRC 4256 (RHS) and NRC4257 (LHS) for the 4 cylinder models. I note that the slave cylinders are also shown with different part numbers between the two engine models. The flexible hose that attaches to this pipe has the same part number for both models. So, is the threaded fitting for the slave cylinder end the only difference between the two pipes or is there some other difference as well? I am assuming that they are the same length and inner diameter?

My question arises because the six cylinder version of the part is showing up as 'not in stock' or 'na' in most of the local usual suspect's catalogues and I will have to get them made up.

Cheers,

Neil

Originally Posted by S3ute

Hello from Brisbane.

Finally getting around to tackling the reassembly of the brakes on my 88" truck and have a technical question.

The truck has (will have) the front and rear brakes from a six cylinder truck installed along with a dual line master cylinder and ancillaries. For the front brakes it needs new rigid pipes from the slave cylinders to the flexible hose join at the back of the swivel hub. The slave cylinders are for the 6 cylinder model front and rear.

Here's the question:

The parts catalogue shows the pipe as NRC4794 (RHS) and NRC4795 (LHS) for the 6 cylinder models and NRC 4256 (RHS) and NRC4257 (LHS) for the 4 cylinder models. I note that the slave cylinders are also shown with different part numbers between the two engine models. The flexible hose that attaches to this pipe has the same part number for both models. So, is the threaded fitting for the slave cylinder end the only difference between the two pipes or is there some other difference as well? I am assuming that they are the same length and inner diameter?

My question arises because the six cylinder version of the part is showing up as 'not in stock' or 'na' in most of the local usual suspect's catalogues and I will have to get them made up.

Cheers,

Neil

The slave cylinders are different between the 6-cylinder & 4-cylinder LWB front brakes (as you've found) so the shape of the rigid pipes will be different. Whether you can re-shape a 4-cylinder pipe to fit a 6-cylinder I'm not sure, I make my own so have never tried to purchase them.

The connections to the slave cylinders should be the same although they did change to Metric fittings at some point so it might depend on the year of manufacture of the various parts.


Colin