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That's part of the reason I love these trucks so much! HDN and others designing and building custom tools to keep em on the road. It gives me a sense of pride to overcome mechanical obstacles I've faced and feeling like I've made improvements to the truck in the process. My next project is...

I had a bearing that was a bit "blue" when I went to grease all the hubs... That was all it took for me to convert to the A2 style wheel bearings. The way the A3 CTIS set up works limits the amount of grease you can run and because I want my truck to be a driver, I called Big Mike and got the...

Lots of great advice here! I am new to the MV "game" myself and purchased a 1999 M35A3 at the end of the summer. I wanted the A3 specifically because of the super singles, power steering, CAT motor for the ease of sourcing parts and finding knowledgeable mechanics (it's a bus motor), upgraded...

M35A3 transfer case fill plug is above the air pack on the passenger side. Best to remove the skid plate under the air pack to access it.

WOW! So the torn O-Ring did it! I must have had the up-pipe cocked just slightly so it didn't seal enough to draw the fluid up. I'm relieved and my truck is happy again. Thanks for all your input! I've always been hesitant to go too far with transmission work as I'm not familiar with them. I...

Thanks for the reply! so I completely disconnected the linkage on the driver's side this time, including the bracketry for the sensor connectors, and "flipped" the linkage and that helped a lot! I also believe I found the culprit- a torn O-Ring at the top of the pickup tube!!! I must have rocked...

Thanks for the info, Gary! I'm in the process of messing with it again today. I pulled the external filter up near the front bumper and it was less an 1/4 full of fluid, giving me the idea that the transmission isn't pumping, so going back to the thought that the filter installation might be the...

I'm also in NH and would like to get involved with the group! I don't have FB so if there is another way you communicate, please let me know so I can contribute. Located in Central NH. Thanks!

Thanks for all the feedback on my issue! I messaged that past owner this morning, and found he drained and filled the transmission with Napa https://www.napaonline.com/en/p/NHF85405 Hydraulic Fluid, which has been discussed on here as being an acceptable fluid to use. Now I'm thinking the...

So much truth to that! I'm thinking I might have knocked the filter off the pickup tube or something... I'll dig into this further.

I regret not inspecting the old fluid more closely. The transmission seemed fine before I drained it so I didn't give the fluid the attention I should have. The pan had limited grayish/black residue/ sludge on the bottom after I removed it, but really no metal flakes on either the pan magnet or...

Thanks for the reply! Fingers crossed it won't need a transmission as it hasn't been run long. It was a red fluid that came out, I assume ATF was in it already, but have also heard they sometimes would dye oil red to help locate leaks? I assumed it was ATF that I drained at the time... It hasn't...

Good evening! I'm not at all knowledgeable when it comes to transmissions. I changed the internal and external filters in the Allison transmission and drained and refilled with Castrol TranSynd. I measured 3.5 gallons of fluid that I drained out after dropping the pan and external filter and...

Searching for the right oil for the Transfer case has kept me up at night! Clark Smith from Martin Lubricants was extremely helpful in confirming that the Traveller Brand 80W-90 Gear Lube at Tractor Supply has a very good anti-corrosion package and is Yellow Metal Safe. I'll be installing this...

The WD40 crossed my mind. I never thought of Linseed oil! I've heard maybe spraying it with Automatic Transmission Fluid/Acetone mix, but that sounds risky... I like the "Door Test" idea.

This is my first thread :cool: I'm a huge fan of SS and appreciate the support of its members! I have a 1999 M35A3 and have spent considerable time prepping it for road use- new fluids, brakes, repack bearings, etc., and I hope to improve the look of the paint. The finish isn't rusty or...