Originally Posted by GrahamW
A friend of mine has a 1993 29HP Perkins Perama
with a Hurth
On taking her out one day at the end of last season we noticed a marked d
Does anybody have any suggestions as to what the problem might be?
Thanks for your help.
Sounds a familiar problem!
Replaced my own Hurth
HBW 100 gearbox
in 2011 and also a friends in 2012, both were replaced with a ZF10 box as it is a straight swop fit no problem.
However if you check there is a slight difference in the gearbox ratio and I run at slightly less revs than before to achieve the same knots.
One thing no one has mentioned is when you take the gearbox out you should check and consider replacing the thrust or drive plate as this may also be worn and in any case 'IF' it goes at a later date you then have the nice job of taking the gearbox back out again!
You can buy the drive plate direct from the manufacturer R & D MARINE R and D MARINE : Marine Damper Drive Plates
I also spoke at some length to ZF gears and they recommend to prolong the gearbox life to change the oil
every 100 hrs and do NOT overfill the gearbox.
Hope this might help