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I know what that dump bed is for. When you're hauling a "pony" trailer for a dump truck you need the dump bed to be able to fit into the trucks dump bed. So, what happens is the dump truck comes out and unhooks it's pony trailer, then it dumps it main load. Then the dump truck comes around and...

My bad for misunderstanding. Getting old and sometimes the old brain case starts to rattle around getting confused about things.

Here's some pictures of the snap-ring and seal install. On the valve body there's really not much to say except the shifter seal install. There are three parts, one rubber seal and two washers. The washers though are "coned" shaped and need to go on a very specific way. They also are two...

I installed the oil seals, but the valve bodies will take a few more days as I need the 9/16" washer that goes on the shift lever. The old ones rotted away, so I ordered stainless steel ones, and stainless roll pins. I need to make a small "Jib" crane next to my work bench as the 303M is getting...

OK, so here's the nice and pretty pictures of the parts going together. The output shafts have nice new bearings installed on them. I used "NTN 6210" bearings here. Nice clean housings The outer bearing installed with snap-ring in place. I used "NTN 6209" bearings here. Make sure you put the...

Today I was finishing up the reduction housing. I need to show you a problem the rear pumps have. All modern pumps utilize either a "Gear" driven pump, a "Vane" pump, or a "Gerotor" pump. Our 303M transmission uses a Gerotor pump design in the reduction unit. Now a modern Gerotor is a great...

If I started to use "sticky" notes, my manual would look like the paper "recycle bin" ! Side note here. Are you still active duty ? I was in the Marines from late 1981 to 1987 . M60A1 Rise Passive, Oh-Ra !!!!

I finished installing the accumulator in the housing today. I also installed one in another case. I plan on rebuilding three 303M transmissions before this spring. At this time, I don't know how long we will be able to keep the 303M transmissions operating. With parts almost nonexistent it's...

I forgot to mention when checking the components of the 303M transmission to really take a good look at the snap ring groove on the "output shaft bearing retainer" . This groove can easily get damaged. Also it is a weak link in the system until everything is assembled. I've found several...

I see I forgot to show "how" to disassemble and reassemble the Accumulator, so I'll do that now. To disassemble the Accumulator you first need to remove the pipe plug on the cover. Than you need to install a 4" rod. The book says to use a 3/8" rod. I had a 1/2" rod and it's much safer in my...

Two were U.S. and the other four were Canadian.

For those who question whether the output shaft needs that bushing, here's the TM 9-8025-2 manuals answer for that. So far on six 303M transmissions I have torn down this year. None had this bushing installed. I truly believe the "factory" screwed up here. So every military rebuilder...

I forgot to show you how I took off the inner bearing on the output shaft using a "bearing splitter". This bearing can also be a real bear to get off. It normally has a slight press fit, but over time and rust can really get seized on.

I was going to install the "Accumulator" assembly today, but it needed work. So I was forced to tear it down. I know I said to leave it alone if you could, and believe me I wished I had left it alone but it needed to come apart. The "accumulator piston" is supposed to have a "slight" press fit...

Here's the information I promised awhile back about adjusting the Bands on the HydraMatic transmission. This is from a "civilian" repair manual. Clear and precise. See my rant below.

Hold your horses ! Tom Wolboldt sent me a text message today ! I called him back and he thinks he might have the wave spring ! So tonight I'll look up the part numbers of items I need and see if he has them. Also the power finally came back on at 1:00 AM tonight. My little MEP-003 ran like a...

I've been trying to get ahold of "Tom Wolboldt" to no effect. All I get is an answer machine which I've left many messages on. No call backs. So I will be using the best reduction piston spring I have and hope it holds up. Haven't been able to work in the shop lately due to a massive power...

Yes, I've been a fan of NordLocks for decades now. Their expensive, but worth every penny !

Yes. Every 303M I have torn down was missing this bushing. I cannot explain it. The output shafts have the holes bored and "finished" to size for the bushing. Did GM mess up ?

Today I'll show you how to check the "reduction" piston and the "direct clutch" piston. I finally received the new reduction pistons outer oil seals from "Fatsco" . I bought two. They have six left. So, I reassembled the reduction unit (again !) and now I need to check the operation of the...