02-03-2018, 01:34 AM
Join Date: Feb 2012
Gear Shift Jammed
Attached is a photo of the turret from a 1981 Sierra gearbox. You can see the crumbling orange/brown plastic cup that the ball on the bottom of the gear stick sits into. The pin screwed in from the side of the turret fits into a slot in the ball and stops the gear stick rotating as well as acting as a left/right pivot.
The two spring loaded plungers visible hold the gear stick in the neutral position.
This turret is from a spare gear box I have. I thought I would just swap over the turrets, but this one is nearly as bad as the one on the car.
I placed a leather washer, about 1 3/8 inch diameter and 1/8 inch thick in the bottom of the turret after cleaning out the old plastic, and a rubber washer about the same dimensions on top of the ball on the gear stick. There is a wavey steel spring washer (original part) that goes on top of that to put downward pressure on the ball.The whole lot is held in place by the retaining plate with three bolts.
Went to the Suzuki dealer and after a lot of searching they found a parts diagram for a 1981 Sierra. Unfortunately the plastic cup is not available as a separate part, only the turret complete for $150 with freight extra, and then only available from Japan.
I said no thanks, the 50 cent plumbing washers seem to work fine.
I have looked at later year Sierras, and some have an aluminium cup which is part of the turret casting, so obviously this is a known problem.
If my washer solution does not hold up, I will try turning up a new cup on my lathe using a white PVC irrigation fitting as a starting point.
Last edited by johnfromperth; 02-03-2018 at 01:52 AM.