Seems like somewhere thru the years somebody must have received a diagram of the main slide mechanism, so if anybody has it please forward it to me so we can get it into the Tech Library. I believe this mechanism remained unchanged for a very long time.
Tom- if HWH received for any model/year, I believe it would be applicable. The setup has 4 main parts:
1) two rectangular holder tubes, welded thru both main frame rails that contain the slider ram & extension
2) HWH slider rams pocketed inside #1, with an extension rectangular steel tube you see when slide is extended (you never see the HWH ram in ordinary operation
3) a welded angle plate assembly that attaches the bottom of the slide to the end of the ram extension tube
4) a "synchronizing" cylinder that keeps amount of fluid running to each of the two slide rams constant so the slide doesn't 'walk' out at an angle; the sync cyl isn't involved in up/down adjustment
With the slide out you should be able to look into the left side end of the holder tube #1, and see 4 teflon pads that pocket the extension tube #2 so it can't move up/down much. You should also be able to see a large nut with an allen screw inside on the bottom of the extension tube, and the slide attachment plate #3. Check #3 and the slide bottom to make sure that isn't deformed, and its attachment to the extension tube is secure. Check the teflon pads for obvious wear (or lack).
There may be some adjustment available via the large nut/allen screw setup, to move the separate end piece of the extension tube #2 up or down. I've never done that adjustment, hopefully somebody w/experience will chime in. Also never replaced the teflon pads which can be worn, but here is a thread
from a year ago that indicated the teflon pads are an HWH replacement part, and not that big a deal to replace. I'm guessing there are both inside pads & outside pads, but that is a guess. There are 4 pads visible on each of my outside holder tubes, so that's 8 min, might be 16 for a full complement or maybe its just 8.