Recent content by rustystud

I see I forgot to give you guys the information on buying your own filter. Here's where I bought it from. McMaster-Carr , part number 4455K21. Now this is for the 100 mesh filter with a 3/4" NPT connection. The smaller filter is part number 98755K14 and is 80 mesh. It slips on the cooler end.

I would stay away from any REB kit. The stock HydraMatic works just fine. If you need any parts or advice on your 303M HydraMatic let me know.

Here's some "Tips" I'll share about building up the 303M's oil pan. If after cleaning up the oil pan you come across some holes in the oil cooler passage due to rust you can use some "High Heat Silicone" sealer to go under the sealing gasket. This silicone will fill the holes and set-up real...

I have some new information I'm going to share today concerning the 303M HydraMatic's oil filter. Almost everyone I've come across lately has shown evidence of wear. Some extremely bad. So I went on a search to find a replacement. At first I asked if any filter manufacturer would make-up a few...

Yeah, that looks like a "Pontiac" unit. Very disappointing ! 😢

Yes, I've thought about it a lot. There are several options I believe can work very well. One being the "AT500" Allison. Note I didn't say the "AT1545" Allison which was used in the M35A3 Deuce. That one has several problems with the torque converter. The tried and tested AT500 Allison has been...

Yes you can buy carb rebuild kits. I bought one just two weeks ago. Pricey but hey it was still available. Here's the company's information. "Mike's Carburetor Parts" 888-689-9758. sales@mikescarb.com. The biggest problem I found was the throttle plate rod and bearings. Yes this carb has...

Anything new to report ? I also own a 1984 Chev Dually ex-military vehicle. I replaced the engine with a 383 HiTorque and a TH400 I rebuilt. Used it to go camping towing the trailer several times. Needed more room for the family though. So I bought a new 2019 Chev 3500 Dually. Love this truck so...

I revised post #278 showing how to install the snap-ring holding the military shaft sealing unit on the shifter shaft. Basically you use a deep socket to "push" the snap-ring into it's groove. Using a rubber hammer give the socket a good "wack" and it will seat. With new "O"-rings it can be a...

Thats the shaft. The bores are already bored out on all the 303M shafts I've seen so far. Though only two where actually to the proper size. The rest I had machined out to the correct size. So it appears this is a factory problem and not a rebuild problem. Though if the mechanics who rebuilt...

That's the problem. The TM only mentions the bushing in one short paragraph . I knew about the bushing since I rebuilt the HydraMatic transmissions in civilian cars too.

The oil pressure is regulated no matter how much is leaking or not. It is at high oil demands that a leak will cause severe problems as the oil pump cannot keep up with demand. This bushing also holds the "input shaft" in place. Without it, it allows the shaft to "wobble" all over the place...

I was a commercial welder for 10 years. I had to learn welding during my "apprenticeship years" . You can TIG weld cast-iron using "Ni-rod" but on critical areas like one of the four case holding bolts you run the risk of cracking at the edge of the weld. Also any cast-iron that has been exposed...

When you were working on the exhaust system did you remove the exhaust manifold ? For some reason the "governor" keeps popping up in my brain. Have you checked those lines ? The ones from the front of the engine to the carburetor. OK, now that I got my "wild speculation" out of the way let's...

Thank you for checking. That pretty much confirms my theory about this transmission. Without that bushing installed, the transmission is losing fluid pressure at an extremely fast rate. This is the "smoking gun" I've been looking for to explain the short life of the average 303M transmission.