Optional Left Crank Mod / Slop Fix
Optional Left Crank Mod / Slop Fix
NEEDED
1 - M3x35mm Flat Head Phillips Screw
3 - M3 Lock Nuts - Dubro #2101
2 - 3x8x3 Bearings
Ruler
Remove the upper deck.
Remove the left crank assembly.
Remove the shaft.
Measure the distance from the bottom of the shaft to the step that the bearing sits on = this is the height of the second screw you will be installing.
Run the M3x35mm Flat Head Phillips Screw up through the chassis and install a M3 Lock Nut as shown (tapered end facing up) - Tighten it down good.
Install another M3 Lock Nut as shown (tapered end face up).
The position of this lock nut on the screw will determine the height of the crank.
Install the left crank assembly, with the new bearings in place.
Install the last M3 Lock Nut as shown (tapered end facing down).
Click thumbnail for larger picture
Installing the lock nuts as shown brings pressure on the inner races of the bearings.
Proper adjustment = reduced slop and wobble in the left crank assembly.
DO NOT OVER TIGHTEN the top lock nut!
Adjust the top lock nut so that the bearing slop is nil and the crank doesn't bind when moved through it's operating range.
Reinstall upper deck and linkage. You'll notice that the M3x35mm screw comes up through the upper deck hole. This is not a bad thing - on the offside chance that the first lock nut should come loose while your driving (highly improbable) the extra length coming up through the deck will help stabilize the assembly somewhat till repairs can be made.
When compared to the previously posted left crank mod, this one is cheaper & tighter.
NOTE: The FRONT C HUB / KNUCKLE / CONTROL ARM & REAR HUB slop fixes are almost complete and will be posted soon.
Last edited by Marv; 10-15-2012 at 01:36 PM.
Reason: Content added