Steering, brake fade

[RichardT10829]

Brakes engaged at 90deg with the extra as leverage onto the drum. I have very little travel on my foot brake before the brakes engage.

I thought maybe the brakes were coming on too close to the cam doing it's bit so to speak... Going to mull it over for a while and get some setting up tools made I reckon

[rob love]

Originally Posted by RichardT10829

Brakes engaged at 90deg with the extra as leverage onto the drum. I have very little travel on my foot brake before the brakes engage.

I thought maybe the brakes were coming on too close to the cam doing it's bit so to speak... Going to mull it over for a while and get some setting up tools made I reckon

The brakes are engaged or engaging at 90°? They should only start being engaged at just over 90°.

[Lynn Eades]

They look to have been bloody hot. Fair to say they have been dragging.
Give them a sand with some emery tape (following the curve) and then focus on getting the linkage adjustment sorted (as you said)
I cant remember how much turn of the wheel you have before the brakes start to act, but it's all in the books about how to set it up.
A comparison of the British and Canadian manuals helps with an overall understanding.
keep us posted.

[RichardT10829]

Cheers folks. Rob they are locked at 90deg. With your comment above I fear I have been dragging a shoe when simply applying the cam to steer .. I think a full re set of the linkages is order of the day... And clean up the shoes. !

[rob love]

Sounds like we may be onto the problem. When you set up the linkage distance (brakes torqued to 80 and the two fixtures set up at either end) the clevise at the steering box should just be engaging with the wheel at 90.

Remember that afterwards you will be backing the 4 notches, so once all is said and done, the actual locking of the brakes will occur well beyond the 90° point. At 90 to 95 degrees, they should just be starting to engage. Full lockup by the book is at 165°, although on my carrier it is a bit beyond that. It may be that my modern linings are still setting in.

From the Cdn manual:

During the 90° swing of the wheel no action should occur in brake linkage.....

[kevin powles]

Rich, Check your triangular floor mounted brake pivot plates in the drivers compartment, if the mounting holes are elongated / deformed or the plates are thin from corrosion they may be lifting off the floor when you apply the brake and not returning when the brake is not applied. This could also happen if you are using the incorrect pitched countersunk screws to hold them.

Also if your driver compartment floor is thin from corrosion it can warp when applying the brakes. if you suspect this as the floor on a carrier is only about 3mm plate when new you can put a strengthening bar between the outer most triangle brackets on the underside of the carrier.

You can get brake heat also if you are using the wrong kind of brake drum sealing strip material which is to tightly packed in.

let me know what you find after inspection.

kevin.

[RichardT10829]

Floor and mounts all good matey. I am not using any sealing strip so no issues there.

I have noticed that I have the linkage rods front to rear in the outer positions for worn shoes... May need to move them into the inner holes when I re adjust the thing.

Wouldn't care she drives like a champ, and everyone on the garage forecourt stopped and stared for ages as I fuelled her up "pay at the pump" I didn't even have to get out the carrier !

[kevin powles]

Rich, yes move the linkages, also get a sealing strip in there, keeps the water out, check the drain hole is clear on the back plate first.

Yes plenty of admirers I bet.

Kevin.