oldgmfart
Cadet
- Joined
- Sep 28, 2009
- Messages
- 16
So I'm sorta new still and going back together with a 1974 MC-1 888/302 transom assembly (without gimbal trim sender), and am setting up the gimbal ring height. Merc Manual #2 states on page 6A-30 "add or remove shim washers under steering lever to correct clearance" (clearance must be between .005 and .030). I checked clearance before teardown and was right at .025 thousands total, just under the max spec. Currently there are 2 shim washers in there, one measures .018 and the second measures .062. for a total of .080 in. in shim thickness. (I'm likely +/-.002 due to cheap digital calipers)
I'm looking to get back down toward the minimum spec. of .005 thou. clearance, so I'm gonna say I need to add approx. .020 in shim in order to get back to .005 gimbal height clearance.
Question is...who has "selective" shim washers available for these old dolls? All I seem to find for parts availability is Upper swivel shaft washer #12-32996 (.015) and washer #12-32997 (.063). Is that it for shims out there?
Correct me quickly but I believe I want to change out the .018 thousands shim for a .040? shim to arrive at the minimum clearance called for? Or, can I just pop in a third .015 thou shim from mercruiser and achieve the same thing + or - a couple of thou? Would there be any issues going with 3 shims instead of 2 under that steering arm? ...or do i seek out a source for a stainless steel .040 shim that fits the swivel pin? How do the big boys cure this one?
Ted
I'm looking to get back down toward the minimum spec. of .005 thou. clearance, so I'm gonna say I need to add approx. .020 in shim in order to get back to .005 gimbal height clearance.
Question is...who has "selective" shim washers available for these old dolls? All I seem to find for parts availability is Upper swivel shaft washer #12-32996 (.015) and washer #12-32997 (.063). Is that it for shims out there?
Correct me quickly but I believe I want to change out the .018 thousands shim for a .040? shim to arrive at the minimum clearance called for? Or, can I just pop in a third .015 thou shim from mercruiser and achieve the same thing + or - a couple of thou? Would there be any issues going with 3 shims instead of 2 under that steering arm? ...or do i seek out a source for a stainless steel .040 shim that fits the swivel pin? How do the big boys cure this one?
Ted