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My plan has been to try and post a complete picture by picture rebuild of the HydraMatic transmission. There aren't many transmission mechanics out there that have experience rebuilding them anymore. They kind of died out. I was lucky to have a mentor who actually worked at GM on the design and...

Yes the manufactures are going to new styles of "air-dryers" like the "Bendix AD-IS" system, but according to Bendix it didn't come out until 2007. That means it hit the market. Doesn't mean it was in wide spread use. According to an article in "Fleet Owners" magazine dated 2005 the industry was...

You do have some wear I see on the "Ring gear" though the "pattern" on the pinion is a good one. How are the bearings ? You should be able, by using a flashlight to look at the bearing races and see if there is any grooves or other wear patterns on them. If there is then don't use it.

Thank you. I didn't want to leave miss-information on this site for future members who are looking for answers.

Well, I finally had the time to dig out my old PTO and look at it. I was wrong. It is really very simple to change from a single shaft to a dual shaft PTO unit. I had remembered wrong when rebuilding it. There is no lock ring holding the shaft to the reverse shaft. It is held on by the bolts of...

If you look at any over the road truck that runs in the Pacific Northwest, you will see the air-compressor line goes to the "wet" tank first. This is because the amount of moisture coming out of any air compressor will overwhelm the air-dryer. Taking outside air and compressing it causes heat...

Take it back then. Tell them your concerns and show them what you're talking about. If you don't trust your differential, you will not have good travelling experiences as you will be worrying about the differential blowing up. That kind of nagging feeling can ruin any road trip.

If you had worked in the industry you would know that the factory says this to prevent the gear set from "singing" (making noise). Most customers of light vehicles do not like noise coming from their differential. Now big trucks owners like longevity over noise. Setting the gearset to a...

Recommended by who ? In all the rebuild shops I worked in, gearsets are set by the gear pattern. Not some arbitrary number. You use the backlash as a "guide" , not the "be-all end-all" . Thats the difference between "book" learning and "real life experiance" .

How do you have your air-lines running to and from the "wet tank" ? Normally the air compressor feeds the wet tank on any truck in the Pacific Northwest. Then the wet tank sends the air to the "air-dryer" , then the air goes to the main storage tanks. If your wet tank is freezing up, then it's...

Well what are you doing with that much water in your air-system in the first place ? OK, just giving you a hard time, but really the nylon lines are better than the old copper since they will not break due to age hardening and vibration. Plus hit a nylon line with a rock and it usually just...

Actually I've seen backlash measurements of .016" to .020" on older gear sets that only needed the bearings tightened up a bit and the backlash reset. You will get small amounts of wear on larger bearings like .001" to .002" due to normal wear. So figure your gearset has run 100,000 miles. Thats...

Glad to help. Now about the cone clutch. Yes, they are as hard to find as "hens teeth" . I never saw anyone resurface one as you would also need to resurface the not only the aluminum cone but the housing as well. That would make your clearances a problem. The seal could be changed out to a...

Thanks for all the suggestions, guys, but that liquid muss got into the electronics. I tried to get it to go into "freeze" mode but no luck. In fact it wasn't even working on refrigerator mode. The fans where running, but the compressor would not come on. I have only myself to blame here. I...

If your gears look OK and the bearings are OK, run it.

Well I'm pissed off and disgusted today !!!! About 4 weeks ago we had a total power failure at the house. So I started up the good old MEP-003 and powered up the house. My new shop is "not" on this generator and I did not think about my military freezer unit which I had stored in the new shop...

When I was rebuilding differentials on a daily basis, I never went past .016" for backlash. Even on the most worn gears. Anything past .016" just brings problems down the road with the gears "slamming" into each other when shifting manual transmissions or going back and forth between reverse and...

First remove the pump and disassemble it. Then you can measure the pump shaft and then the seals outer diameter and using the charts provided by most seal companies (CRC, Timken etc.) you can find the perfect one to fit.

The trucking and transportation industry went to plastic fans decades ago. There just far better than the metal "spinning blades of death" fans. Plus they save on fuel too. Less parasitic drag on the engine.

Water pump seals do not "regenerate" with use. More than likely your seals are dried out and now that you used it, they are torn up. Also the weep hole is supposed to point down not up. That way you're not spraying coolant all over your engine when the seals go bad. You can rebuild this pump...