This is an old revision of the document!


REF: Tools - 103

Crankshaft / Flywheel Tools

Installing / Removing Timken Bearings

Crankshaft Jig for Installing Timkens 1)
Tool for removal of Timken Bearings 2)

Pulling the Race

Cut the head off of a C-clamp and welded on locking tabs. Huck of tubing from the scrap-bin sliced lengthwise, slotted for the locking tabs
with a cut and ground 1“ Hilti bolt washer welded to one end. Another hunk of refuse tubing with set-screws as a sleeve to hold it all together.
Flywheel Race Puller, 3)

Flywheel / Crankshaft Balancing - Truing

Flywheel Balancing Stands 4)
Flywheel Balancing Tools 5)
* A piece of 4” steel channel as a base.
* Two automobile connecting rods are then bolted to holes drilled in it at the right distance apart to suit whatever flywheels are being worked on.
* A threaded insert was machined up so a half-inch or so bolt could be threaded threaded through, with locknuts to hold it in position.
* The ends of the bolts are machined to a point same as a lathe center (60 degrees maybe?).
* A magnetic dial gauge is stuck to the base to suit the job at hand.
* This rig has been used to do countless numbers of 45 Flathead bottom ends, J models and big Brit singles like the Matchless wheels in the pic.
* The alignment of the two center bolts is not super critical (they just provide the two points). The flywheels and shafts are a straight line between them.
Flywheel / Crankshaft Balancing and Truing Stand 6)
Here is a pair of adaptors to swing big fat Harley 7)
flywheels in a small lathe like a 4.5“ swing Myford etc.
Here is another way to true flywheels in a small Myford lathe that has only a 4.5” swing that won't fit Harley flywheels.
Two offset pieces made from some flat half-inch thick bar and some half-inch round bar.
Truing flywheels on center in a lathe via offset jigs 8)

Crankshaft / Flywheel Installation

Weld an extension shaft to a coupling nut, cut a piece of gas pipe the same diameter as the inner bearing race, welded a stud to the side of tube so it will stop the
tube from spinning while tightening and eliminating the possibility of any metal shavings getting into the bearing while tightening the nut. Make sure the extension
is long enough that you can grind a flat on each side of it so you can hold it with a wrench tightening the puller nut 9)
Flywheel Installation Tool 10)
Homemade tool to pull the flywheels back into the left case, pressing the bearing on and pull the wheel in at the same time.11)


This website uses cookies for visitor traffic analysis. By using the website, you agree with storing the cookies on your computer.More information