< tool list<
These tools are not for sale.
Any repairs carried out on these items are as a service to customers
Front hub and rear drum threads can be reclaimed with internal threading tools on the lathe, without a tap.
It might be possible to use an internal thread chaser.
Price on application.
Wheel bearing ring nut. Reclaiming damaged threads.
This page demonstrates how to reclaim and repair damaged ring nut threads on the front hubs. There is also a repair procedure for the rear drums.
This is a service repair only.
Items must be sent to my workshop for overhaul. Wheel bearings and oil seals and the king pin lower thread can also be replaced and repaired.
The hub is mounted in the lathe on a specially designed carrier.
The hub carrier with the arrester arm welded to it. The middle diameter is the wheel bearing fitting. There are two sizes of this carrier. One for 35mm inside diameter bearings and one for the 36mm inside diameter bearings used on larger vehicles including the Ami series and Acadiane and AK400. The thread on the end is 30mm x 1mm pitch.
Distance piece 7mm wide. Clamping nut 30mm x 1mm thread. C - type spanner is used to tighten it.
When everything is assembled and tightened up, the hub must not be able to move, so the arrester bar prevents this. If it moves, in relation to the carrier circular motion, then the hub threads would be out of true with the cutting tool and irrepairable damage to the threads would occur.
You can see the damage to the threads. Dirty and rusty threads.
Ready to re-cut the damaged threads.
The correct threading gears are selected [ 1.5mm pitch ] and the saddle lead screw is engaged. The secured hub is rotated by hand, anticlockwise, to eliminate any backlash in the gearing. The machine is continuing to rotate anti clockwise and as the threading tool moves towards the hub, it must be set to engage into the root of the thread well away from the damaged parts. I can now set the cross slide indexer to zero. When the cutting tool is in the correct position, rotate the cross slide handle one full turn to the zero mark again, clockwise. The tool is now out of the thread completely. Rotate the machine clockwise to withdraw the cutting tool until it is 5mm from the hub thread entrance. The lathe always has the lead screw engaged during the repair. Bring the cross slide back out a little to move the tool into the thread again. Repeat the forward and reversing operation several times and the adjustment to the cross slide until the index zero mark is finally reached again. The tool has now re-cut the threads and will be in position at the root of the thread.
It might be possible to use an internal thread chaser, however, these items are specifically hand held. I would not recommend trying to clamp one on the tool post.
Clean and shiney reclaimed threads. The ring nut screws in perfectly.
JOB DONE !!!!!!!!!!!!!!! easy.