Lift Box

Colin Richards · Post by **Colin Richards** » Mon May 26, 2008 9:36 am

Has anyone had difficulties getting the gears to operate correctly on the lift box.

I believe that I'm using the correct gear wheel even though the HPC PM0.4-60 looks different to the one shown in the instructions. I have 3 gears all the same, two with the word HPC and a telephone number engraved the third gear is un-marked but the same size.
The problem appears to be in the meshing, with the worm in place the meshing is far too tight and everything locks together.

Has anyone else encountered this problem, if so how did you overcome it?

looking forward to any advice received

Colin

Stewart Ashton · Post by **Stewart Ashton** » Mon Jul 21, 2008 9:22 pm

Hi Colin,

I have exactly the same problem, I thought as you that the ratios
were not quite right but the problem in my case is that all the gears
and worms needed a thorough clean. And I mean thorough!

I ended up filing a few teeth here and there and a real scrub with
wire wool.

It took almost a week but eventually everything meshed?

Good luck.

Colin Richards · Post by **Colin Richards** » Tue Jul 22, 2008 8:51 pm

Hi Stewart

I ended up by sending the lift boxes back to mark to sort out. He has done a first class job and the gearing now runs very smoothly.

Colin

Stewart Ashton · Post by **Stewart Ashton** » Wed Jul 23, 2008 6:58 pm

Hi Colin,
Mine work sort of ok not exactly smooth.
I darent send anything else back or i will probably get
black balled

Regards Stewart

Jeffrey Goff · Post by **Jeffrey Goff** » Wed Jul 23, 2008 7:41 pm

Hi Stewart, I had some problems with the gearing being stiff, but in my case it was the chain pulley shaft binding in the front cover and rear bearing, I just drilled it a little larger, and a bit deeper in the front cover, and it was as smooth as silk, I also connected it to a battery drill and run it forwards and backwards just to bed them in, hope this helps
regards
Jeff