The International Cessna^® 170 Association

I am restoring a 48. The shims I removed were aluminum, maybe handmade. Looking on McFarland's website the thickness of the shim for the 170 is .040. The gap in the gearbox won't be filled by one shim. The Altee Dodge catalog says the number of shims needed is "as required". AN4-5A is the bolt used to secure the shim, hence stacking a couple of shims will start to eat away the bolt grip. I sorta recall talking to Harry Deliher about 10-12 years ago and he said jam them in there till it is tight, but I am not sure if my recollection is correct. The Cessna 100 series manual and the 48 IPC both show just one shim. To me, a shim should be tight so stacking might be correct. I would appreciates thoughts on this. Thank you for your response.

As it says stack them as required . I have 2 lots of 20 thou and a another one shaved down to about 8 thou . My shims are under the leg but a gap still has to be filled .