Minor Clutch Adjustment
Posted: Fri Mar 07, 2014 11:12 am
A few words from the initiated re clutch adjustment please. When I started this seemed a simple job, but now I am not so sure.
As far as I can understand the original manual and subsequent technical descriptions there are two clearances to set in the clutch.
The manual reads "[adjust] until at least a 10-thousandths feeler gauge can be inserted between the end of the adjusting screw and the head of pressure pin beneath it, and there is a clearance of 3/32 of an inch between the end of each lever and the face of the clutch withdrawal race".
So .....
Are these adjustments made simultaneously, with a gauge of appropriate size located in each position and then the adjustment made so that there is a good fit at each point?
When I do this (see picture) and remove the gauges there is then about 1/4" of free play between the withdrawal arms and ball race, until the withdrawal pins 'bite'.
Due to the lengths of the levers involved an increase in this play would be expected, but this seem excessive. Or .....
Should the two clearances be adjusted independently with a 10-15thou clearance at the withdrawal pins when the arms are just touching the ball race and the 3/32" clearance when the arms are just pressing on the withdrawal pins? This method would certainly require fewer hands to achieve, but since there is only one adjustment point, the two clearances are dependent on the accuracy of the parts and their assembly.
One thing I have learnt from my error is to tie string or wire on the 3/32" gauge (in my case a slim bicycle spanner) so that when it falls into the clutch housing it can be easily removed!!
Grateful for comments please, so that I am on the right lines before I adjust the other two arms.
Martin
As far as I can understand the original manual and subsequent technical descriptions there are two clearances to set in the clutch.
The manual reads "[adjust] until at least a 10-thousandths feeler gauge can be inserted between the end of the adjusting screw and the head of pressure pin beneath it, and there is a clearance of 3/32 of an inch between the end of each lever and the face of the clutch withdrawal race".
So .....
Are these adjustments made simultaneously, with a gauge of appropriate size located in each position and then the adjustment made so that there is a good fit at each point?
When I do this (see picture) and remove the gauges there is then about 1/4" of free play between the withdrawal arms and ball race, until the withdrawal pins 'bite'.
Due to the lengths of the levers involved an increase in this play would be expected, but this seem excessive. Or .....
Should the two clearances be adjusted independently with a 10-15thou clearance at the withdrawal pins when the arms are just touching the ball race and the 3/32" clearance when the arms are just pressing on the withdrawal pins? This method would certainly require fewer hands to achieve, but since there is only one adjustment point, the two clearances are dependent on the accuracy of the parts and their assembly.
One thing I have learnt from my error is to tie string or wire on the 3/32" gauge (in my case a slim bicycle spanner) so that when it falls into the clutch housing it can be easily removed!!
Grateful for comments please, so that I am on the right lines before I adjust the other two arms.
Martin