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I found a company "Hoye Tractor Parts", that has most of these parts. I just ordered a complete filter unit for one of my MEP-531A's that came without one. They also have a video of how to bleed this system (on a tractor). Kind of messy; At least I put a can under it when I bleed the system...

Glad you got it working. Someone, within the last two weeks posted a vendor for the brushes. There is also a thread with p/n for the brush parts. If I find it I will post the info here. Looks like you got a good unit.

The Volt & Hertz meter on the 531A is upstream of the breaker, so they will read if your generator is making power, even with the breaker off. The diode you mentioned acts as a surge suppressor across the shunt trip coil in the breaker. The breaker shunt trip coil is controlled by the A2 engine...

IN

Have you checked the meter fuse F1? The volt and Hertz meter are before the breaker. If the fuse is good and your meters don't read, then you either have a wiring , VR, or generator problem. I attached the schematic from the manual to help you along. The hour meter is powered from the engine...

They are supposed to be spark arresters for what its worth. I added #10 stainless lock washers between each disk, and eliminated the back pressure problem, while keeping the original "look".

Another option would be Calcium Silicate insulation ( www.industrialinsulation.com/images/calcium_silicate_data_sheet_050517.pdf ). It is harder than mineral wool, but is installed the same way; cut to fit, and secure with wire, then cover with the aluminum jacket. Depending on the length of...

If it is a straight run, you could use preformed mineral wool insulation like this https://www.mcmaster.com/insulation/pipe-insulation-3/mineral-wool-pipe-insulation/ . Otherwise two or three layers of the wrap as recommended by Scoobyshep should work. Just make sure the material is good for...

With the virus going around, I am finding plenty of time to work in my shop, and ran across this test I started on 18 March 2018. This is a final update of my Fernco diesel soak test. These parts have been submerged in diesel for almost 25 month. The final results are the same as in my last...

Are you referring to the drain bushing on the tank? My fuel shutoff is on the fuel filter. The drain bushing is a "well nut" type bushing. I replaced those with a brass bulkhead fitting with a viton "O" ring and pipe plug. (Same size as used on my Mep-802A -...

Search on Amazon for "Electriduct Rubber Grommet Seal Gasket O-Ring Bushing - 3/8" x 1/8" x 1/2" x 5/8" x 13/32" - Pack of 50 Grommets" I copied that description from the site.

I have been using these generic bushings on my 531 and 016D's with good success. They are made by Electriduct, from SBR rubber, and are available on Jeff's big "A" site for about U$D 16. The only difference is that the Yanmar has a slightly larger flange on one side, which does not appear to...

I recently had a leak on my truck engine. Ordered some Tracerline UV dye for oil (they make one for oil and one for coolant), and a cheap UV flashlight off the big "A" site. Amazing how easy it was to find the leak in the dark. Any seepage with the dye will glow brightly. (And so will your...

Guy, I have the cover off my 802A, and my A9 module wires have numbers on them (magnifying glass size). The tie wrap on the generator side is labeled with the plug number P-15, the float side tie wrap J-12. The wires on the float side, going to the J-12 plug are numbered 1F, 2F, 3F, 4F. The...

If you disconnect all the wires going to the exciter and voltage regulator (tape them off individually) you wont damage the generator. The generator will not produce any power without excitation.

Here is an update on my Fernco diesel soak test. I placed the remnants of my Fernco coupling trimming in a jar of diesel on 18 March 2018. I just found the jar, while looking for some other items in my shop. These parts have been submerged in diesel for almost 6 month. The plastic has hardened...

The motor shops dip the windings into a polyester resin, then bake the winding to cure the resin. For severe service the winding is soaked in the resin under a vacuum, then under pressure, called VPI - vacuum pressure impregnation. That is what I would spec for your windings. There are also...

I am back in town, and plan to get the set up and running in the next two weeks. I tested all the electric components with a 24v power supply, and all relays, lights, fuel pumps etc. work as they should. Now need to get batteries, fill the oil, and then start flushing the cooling system. I found...

I get all my stainless fasteners from this place https://www.albanycountyfasteners.com . They have just about anything you need in stainless