Brakes

[Terry Potter]

Hi all, help please...my TR4A been parked up over winter in garage, been out to give it a start up which was OK but brakes stuck, is there any easy solution in unsticking them please....help appreciated

Edited February 24, 2021 by Terry Potter

[MRG1965]

HI, I'm assuming you mean the  rear brakes are locked on?

You could  try blocking  the front wheels so it does not roll over you. 

Then release the handbrake and gently but firmly tap/bang on the drums with a hammer, could be lead or soft hammer, just be carful to not to crack drums if you use a lump hammer.

Should only be a light rust holding it on which will clean off after a few mins of running on the road.

Might need to remove wheel if really stuck.

 

For the future, I block the wheel and leave hand brake off.

[Terry Potter]

Thanks mrg1965

Yeh meant brakes.. well spotted, I've edited post. Yeh did think I would need a bit of gentle persuasion...I normally leave handbrake off, obviously had a senior moment 

Thanks

[Z320]

Did you forget during winter the handbrake works the otherway round...?

[Terry Potter]

Yep silly me

[Z320]

TRUE?

You are kidding me?

[ianc]

Why not simply chock both front wheels so as to prevent movement fore & aft, then lift both rear wheels off the deck, wind back the adjuster (anticlockwise) on the backplate of each rear brake.  If you release each adjuster by 4 or 6 quarter turns, then the engine should be able to overcome stiction - you might need to try both first and reverse gear.

Best never to park the car with handbrake engaged - use first or reverse gear &/or chocks.

Ian Cornish

[Terry Potter]

Thanks Ian, yeh may give that a go. As j said earlier I don't normally leave hand brake on .

Edited February 24, 2021 by Terry Potter

[ctc77965o]

Try reverse ...frozen drum brake more likely to un-stick in reverse (no self-servo effect)

[Z320]

The TR drum brake has the same self servo effect driving forward and reverse.

Each drum has one self servo and one not self servo brake shoe.

This changes driving reverse, the not self servo shoe will than be the self servo shoe.

I hope that helps reducing rumors

Edited February 25, 2021 by Z320

[Lebro]

1 hour ago, Z320 said:

The TR drum brake has the same self servo effect driving forward and reverse.

Each drum has one self servo and one not self servo brake shoe.

This changes driving reverse, the not self servo shoe will than be the self servo shoe.

I hope that helps reducing rumors

Yes, but only TR2 & very early 3's  later TR's only have drums on the rear, & are single leading shoe.

Bob.

[Z320]

Yes, my TR4A ( and all TR250-5-6) has in each brake drum

- one leading brake shoe (to the front)

- and one not leading brake shoe (to the rear)

Driving backwards the spin of the wheels change and so the leading shoe and not leading shoe also change.

So braking backwards is about as good as forwards.

This may be slightly different when this @€€(!!?@ fantasy sliding mechanism on the backplate not works properly.

Edited February 25, 2021 by Z320

[RobH]

Marco is right of course.
For the single-leading-shoe arrangement in the rear drum there is a weak servo effect in both directions because there is always one shoe leading and one trailing. 

Twin-leading-shoe in the front drum of the early cars gives stronger servo effect going forwards but none in reverse as both shoes are then trailing.  

[Lebro]

I see what you mean Marco, yes I agree !

Bob.

[ctc77965o]

All of the above maybe true...but I maintain: if your car wont go forward because of a stuck brake, try going backwards.

 

[Z320]

That's true