Mark VII Rip Fence Reassembly

[JPG]

After penetrol over nite drying of the actuating rod, I waxed/cleaned off the areas where stuff needs to slide, and inserted the tension pin and connected the rod to the handle.

I like to apply in line force slowly, hence the vise.

reasm 1.jpg (444.91 KiB) Viewed 2399 times

Moving to the back end, I started the pin into one side.

reasm 2.jpg (281.78 KiB) Viewed 2401 times

Then positioned the rear clamp onto the pin and again squeezed the pin into place.

reasm 3.jpg (394.71 KiB) Viewed 2397 times

This shows the parts sequence on the front end of the rod. The large washer was not oem. I believe a po rightfully
* changed it to this one with a larger od. The handle/clamp was worn by pressing against a smaller washer. The next washer has a large id that allows the sleeve to penetrate it.(the washer slips over the sleeve) The washer on the inside end of the sleeve must be inserted after the sleeve is inserted into the bore in the fence.

* Tain't so! Not a good idea! See post #5 this thread.

reasm 4.jpg (344.69 KiB) Viewed 2400 times

The front clamp is retained/pivots on a tension pin. The rounded(convex) fingers face the washer at the inner end of the sleeve.

reasm 5.jpg (391.29 KiB) Viewed 2394 times

This thread is linked to from https://forum.shopsmith.com/viewtopic.php?t=11984

[JPG]

The long front spring with a washer at each end is positioned so the rod can be inserted through them. The spring must be compressed slightly to get it and the rear washer inside the web.

reasm 6.jpg (348.87 KiB) Viewed 2395 times

This shows the washer at the outer end of the spring. It presses against the front clamp to release it.

reasm 7.jpg (350.6 KiB) Viewed 2401 times

A similar arrangement at the rear clamp, but a much shorter and stiffer spring. I decided to add the washer between the rear end of the spring and the clamp. The clamp has a camming profile with a high point at the rod hole. All this added difficulty in getting these parts aligned. Once aligned, the rod slipped through them all. The spring being slightly bent did not help any!:(

reasm 8.jpg (326.08 KiB) Viewed 2397 times

The rear clamp is u shaped so that a sleeve is necessary(see next pix).

reasm 9.jpg (375.4 KiB) Viewed 2385 times

After slipping the sleeve onto the rod, the adjusting nut is screwed on.

reasm 10.jpg (381 KiB) Viewed 2382 times

After posting these pix I noticed one of the flat washers was 'thinner' than the other three. Next time I take the rod loose, I will relocate that 'odd' washer to the rear end of the back spring.

[JPG]

The jam nut goes on last. This will be adjusted later.

reasm 11.jpg (362.09 KiB) Viewed 2380 times

The bias screw hole threads are chased.

reasm chase.jpg (529.56 KiB) Viewed 2391 times

The bias screws inserted just flush with the outside end so as to not interfere wiuth the table rail.

reasm bias.jpg (458.08 KiB) Viewed 2384 times

The casting is secured with two screws and washers. The inner screw is longer than the outer screw. Blade alignment will be done later.

reasm base.jpg (419.12 KiB) Viewed 2388 times

The mortising hold down shaft set screw is added last.

reasm screw.jpg (376.18 KiB) Viewed 2384 times

[JPG]

Three 'overviews'.

fence bottom.jpg (206.04 KiB) Viewed 2377 times

fence left.jpg (206.84 KiB) Viewed 2373 times

fence right.jpg (201.24 KiB) Viewed 2367 times

A word regarding the tapped 'jig' mounting holes. They are tapped 'through' so a screw's threads can run all the way through both sides.

[JPG]

After trying to fit the fence onto the table(s), it became apparent all was not well. The large hole washer was causing the front clamp to not clamp fully. The sleeve was not being pushed in enough to pivot the clamp closed.

This is the latest set of parts.

clamp washer final.jpg (436.47 KiB) Viewed 2319 times

The thick outer washer is still a good alteration(wear to the clamp cam surface). The extra thickness can be compensated by rear adjustment nut.

The clamp is not releasing fully to clear the front rail, but by either pulling on the clamp handle or pulling on the rear clamp(moves the rod) the clamp allows fence insertion or removal. Not sure if this is 'normal/typical' but I do not see a good way to increase the sleeve travel(the sleeve moves the clamp pivot).