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Handbrake compensator - what does it do ?


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The adjuster is fixed in position on the backplate, and as the adjuster is screwed inwards it will move both shoes towards the inside of the drum.

The slave cylinder is arranged to slide in the backplate so that it is self-centring. The handbrake lever acts at this point, too.

Because there is but one slave cylinder, one brake shoe is leading, the other trailing.

Because there is a self-servo effect with a leading shoe, this shoe has a greater effect if the car is moving forwards. Conversely, if the car is rolling backwards, the trailing shoe then becomes the leading shoe and assumes the more important role.

If the slave cylinder cannot slide, then only one shoe will be working properly and rear braking will be much reduced.

 

So, as long as your handbrake cables are doing their job )easily checked with the help of a friend), I suggest that you check that the slave cylinder is capable of sliding.

 

The standard TR2/3/4 handbrake lever provides the driver with tremendous leverage and normally provides excellent figures in the MOT.

 

Ian Cornish

 

 

Thanks for the information. I have replaced the cylinders and hope that I correctly fitted the retaining clips. They had a smear of copper ease and were sliding when I offered them up. The cables are new and there is more adjustment but it would start to move the cylinder if it was tightened any more. Maybe it is time to take this problem to a TR specialist. It does not sound difficult but i seem to have been struggling for about 4 years.

 

Thanks

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Re-read my post above where I had to remove the adjustable yokes and run a die up the threads about another 1/2". Then I used a hack saw to cut off about 1/4", put the yokes back on the cross cables, re-assembled then in place and then they were now the right length where I could adjust them one turn of the yokes at a time to get the hand-brake adjustment to be perfect..

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