41 replies to this topic

[stormintrooper]

Item 10 is the bit I mean, should be two , one either side of the adjuster peg,also worth checking not been put in wrong way round.

One other thing are the shoes the right way round, the locating holes for the handbrake mechanism are different

i cudnt honestly tell ya if either are put wrong way round

i wudnt know lol

[lrostoke]

That diagram is correct..

The large roundish hole goes on the side the pivot is, the slot goes on the other side.

[stormintrooper]

ok well i shall have a look now, will report later tonight with results

[Ethel]

By tweak I mean pry, tap, pull and push bits until they move freely. Only the front shoe will move with the drum off as it needs to be held by the drum in order for the arm to pivot and push against the rear shoe. Hold the front shoe with a screwdriver in the back plate and you'll see - if it the arm isn't rusted solid.

The "leading edge" of a brake shoe is the end "upstream" of the rest of the shoe by the rotation of the drum. It's the end with some bare metal before the lining starts. So in the diagram it's a right hand brake (front of car to the right) and the drum turns clockwise.


(even more) boring bit: drum brakes have a self servoing action, the friction on the leading edge flexes the shoe & pulls the lining on to the drum harder - that's why drum brakes are pants when you reverse.

Edited by Ethel, 17 September 2008 - 01:51 PM.

[stormintrooper]

right, whilst i was refurbing wheels i had a poke around, the adjuster moves the rear shoe maximum of 5mm and same with the front shoe, if it decides to move at all

when the handbrake is engaged the rear shoe moves, to see how much the cable was pulled bk i made a very light scrath into the radium as it has thick undercoat on it, the cable moves back roughly 1cm

with the adjusting nut turned for tightest fit the wheel is only slighty more resistant than no resistance at all

am i right in thinking maybe its the adjuster? not moving it far out enought, maybe its worn?

[lrostoke]

The adjuster would have to be pretty worn..

Its basically a cone shaped peg that as you screw it in pushes the top of the shoes outwards.
5 mm of movement should be plenty because the shoes should be pretty much rubbing against the drum to start with.

Maybe take some photos ?? So we can see what your doing

Describe how you adjust the shoes, maybe your doing it wrong, it sounds like everything is there and working so it only really leaves operator error

I know when I've done mine if I spin the wheel and pull on the cable that runs along the radius arm it stops the wheel,

Edited by lrostoke, 17 September 2008 - 05:35 PM.

[stormintrooper]

so it only really leaves operator error

cheeky

well iv packed up for the night now, i would like to say tho that the handbrake has been like this since i bought her in may (off the road) so if theres sumat wrong i havent done it

[stormintrooper]

bk with pics as requested

[attachment=69767:Photo009.jpg]

[attachment=69768:Photo010.jpg]

[attachment=69769:Photo011.jpg]

[lrostoke]

That all looks ok to me ?? only thing I do different is the top spring I put behind the shoes, not in front..

When you fit the drum , and screw the top adjuster in, I tend to screw it in till the wheel won't turn, then back it off a quarter turn.
Im stating obvious now because sometimes it can be the obvious, but with the adjuster peg having 4 sides, you will get tight spots when the corners of the peg are pushing against the shoes, you need to make sure when the drum is tight you aren't on one of those tight spots.

[Ethel]

The top pull off spring is on the wrong side of the shoes isn't it? Not that it'd make much difference. If the foot brake works then your looking at the cable really, the only bit of handbrake in the drum is the lever (number 7 in the drawing).

[stormintrooper]

so what do you sujest as the adjuster makes no difference whatsoever

[stormintrooper]

and measuring the cables movement when the handbrake is engaged the cable moves back roughly 1cm

[lrostoke]

with the drum off, screw the adjuster in, and watch how much the shoes move , screw it right in...

[stormintrooper]

well (now this is where i think sumats wrong) when i turn it it doesnt go in, simply turns and turns and turns and every quarter turn the shoes pop out bout 5mm

[Ethel]

well (now this is where i think sumats wrong) when i turn it it doesnt go in, simply turns and turns and turns and every quarter turn the shoes pop out bout 5mm

That could be it, sounds like the thread is stripped - it should eventually unscrew out of the backplate towards the drum.