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SPArKy_Dave

XB Panelvan brake rebuild, help needed!

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Over the past week,

I've been rebuilding the braking system, on my XB Panelvan.

 

I decided to start with the rear drums first, and work from back, to front.

I disassembled both sides, and inspected the condition of all the hardware, finding a few issues.

 

1. the rear wheel cylinders are aftermarket - both seized (but not leaking), and have the incorrect bore size.

2. the tension washers are missing, on both hand brake apply lever pivots.

3. the washer is missing from the wind-out wheel for the R/H drum shoes.

and

4. all the auto adjust brackets are missing for both sides. (wear marks show they were definitely there originally)

 

So far, I've managed to source an OEM spring kit, some new auto adjust brackets, and the correct missing washers.

But I need help with the wheel cylinders...

 

Later (11/74 onwards) XB V8's, ran 3/4" bore wheel cylinders,

(presumably for more bias to the front brakes)

but everywhere I've searched so far, I can only find the earlier XA/XB V8, (and all 6cyl) 13/16" bore wheel cylinders.

 

Bosch, IBS, Protex, do not list them.

Protex does list a rebuild kit for them though?


They're listed clearly in the factory XB Ford parts book I have,

and also in the old PBR catalogue.

The factory part no, is: XB-2261-GA

and the PBR number, is: P10015

 

Does anyone have any suggestions, who may have stock of older PBR brake parts?

 

 

 

 

 

 

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2 hours ago, bear351c said:

What are looking for, Dave.?  3/4' bore rear wheel cylinders.??

 

Seen 13/16", and 7/8", (P5744 I think) Could you use a generic trailer part P10046 for HQ or somesuch.?

 

Yeah, a pair of 3/4" bore wheel cylinders.

 

The early standard V8's and all the 6cyl, were 13/16",

and the GT's were 7/8" I think?

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10 hours ago, bear351c said:

Hmmm.......... all my info says 13/16" (20.64mm)  All sedans, wagons, etc.  P5748 cyl, repair kit K564S. 

 

Is it a parts book?

I got my info, from my Ford/Dealer XB Falcon part number book.

 

And my old PBR brake parts catalogue, says the same.

 

13/16 for V8 and 6cyl up to 11/74

3/4 for V8 excl GT for V8 11/74 onwards

13/16 for 6cyl 11/74 onwards

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4 hours ago, bear351c said:

Yeah, the old big, red bible. Double checked with my local AutoPro connection, he agreed. Doesn't list anything on their computer thats 19mm...

 

If you're sold on using the 3/4 bore ones, could your local brake shop, sleeve them for you.?

 

That's the tricky part -

it has/had the incorrect ones fitted.

 

I do actually have a couple of 3/4 bore rebuild kits,

originally thinking I'd rebuild the original wheel cylinders.

 

Until I discovered the wrong ones were fitted... 🙄

 

The brakes were always a bit underwhelming on the vehicle,

so I assume mis-matched parts, are possibly causing the issue?

 

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57 minutes ago, SPArKy_Dave said:

 

 

The brakes were always a bit underwhelming on the vehicle,

so I assume mis-matched parts, are possibly causing the issue?

 

if they were in good condition i reckon they'd be as good/same as an XD/XE/XF van/ute/wagon 

My brothers XB van was a 6cyl then a V8 with the same diff.. it's brakes were GOOD with both.. (drum diff)  who knows what size the wheel cyls were though 

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