Wheel cylinder on rear break back plate

[paul83]

Hi All,

Two questions about the wheel cylinder in the rear break:

1. Positioning

The rectangular opening in the back plate is much wider than the space required for the wheel cylinder and hand break level to operate. Should I position the wheel cylinder so that is it in the centre of the back plate, directly above & in line with the break adjuster at the bottom?

2. Movement

I have refurbished the wheel cylinder and back plate, and am using new retaining clips to secure the cylinder to the back plate. On one of the back plates, the wheel cylinder can move horizontally without much of a push - it will easily move when using the break-lines to operate the wheel cylinder. Should this be fixed so as not to move?

Thanks,

Paul

[RogerH]

Hi Paul,

 the wheel cylinder needs to move so that the shoes can centralise and allow the handbrake lever to operate both shoes.

The three locking plates will stop it falling apart.

 

Roger

[paul83]

Thank you Roger!

[John L]

Paul

There was a recent thread I think from Bob who had found that the 4 locating pads behind each brake shoe in the backplate had made quite a wear mark, and was stopping the shoes closing properly, and so was not positioning the shoes correctly, worth a search but not sure under what heading to look for.

John

[RogerH]

Hi Paul,

 this is the roblem I had with a slave cylinder on my TR4 (basically the same as the 6).

Lots of phaffing about and red herrings but have a read something may click.  start at apprx August 25th

 

 

 

Roger

[Kenrow]

This is some great info on brakes from Buckeye Triumph here in the States:

 https://www.buckeyetriumphs.org/brakes

[Kenrow]

Forgot to add this one from Macy's Garage:

https://macysgarage.com/wheel cyl install.htm