2003 Max IV resurection

[Canadian_Zuk]

Hi, I figured I would start a thread on the reassembly and repair to my new to me Max IV. I just purchased this unit from another forum member and I can't call this a restoration as the Max is in overall excellent condition, it just requires a few minor repairs and some assembly that I will document here and look forward to your input and criticism.

My new to me Max IV



1st order of business is to repair the T20 mount holes that have started to oblong.



I decided to go with 1/4" plate as that is what I had on hand, I will install slightly longer mounting bolts as well.

plates cut, drilled and test fitted


a few bolts and nuts to keep everything aligned while I weld it up


All welded in and painted



dropped the T20 back in to make sure all is well, looks good.



On to chains, a tensioner, motor mounts tomorrow. If I keep this pace up I should be out for a test ride this weekend.

[Rusty-Gunn]

Thanks for sharing. The pictures do help with understanding what is being done.

[Mike]

Nice work. The T20 shouldn't go anywhere now.

[Canadian_Zuk]

Well, progress is being made. I had a minor setback on my first test drive out in the woods, a magnet came off the inside of the flywheel and rearranged the rest of the magnets and the stator lol. The stator parts were cheap enough, but the magnets are not available individually, I would have had to buy a new flywheel.




Upgrading to an external alternator was the most frugal solution. I found a 37amp 10SI style alternator for $80 from my local re-builder and cobbled an adjustable mount together. I'm still waiting on my Ebay PTO shaft to arrive so I can permanently bolt this down to the engine stand. It's not pretty but it will be effective and only took a few minutes lol.



The motor ran when installed, but not well. I removed and cleaned the carb 3 times in a heated ultrasonic cleaner, it improved greatly but still had a rough idle and ran lean. I kept looking for(expecting to find) a small bit of dirt or something clogging the main jet as all the rubber appeared to be in good condition upon disassembly and only the needle was a little sticky at the first cleaning. After 3 stabs at it I broke down and ordered a Kohler carburator repair kit, man oh man, $110 sure doesn't get you much from these guys (couple of O rings and screws) lol, not even a float or jet for that price! Regardless, it was money well spent as the 25HP motor is purring like a kitten now. During the rebuild, most of the rubber that appeared good at first inspection broke or cracked during removal to install the fresh O-rings.



I picked up 9 24" Argo tires from Kijiji last week as well and have them installed now, having 3 full size spares kicking around isn't so bad either.



Tracks are also all ready to go, just waiting on the axle extensions I ordered from Adair Argo to arrive.



Ugh, back to watching tracking number now, I need more parts to arrive

[Canadian_Zuk]

PTO shaft arrived.


I got.my alternator installed tonight



And goodies arrived from Adair, tracks on next week

[Dozerlarry]

Could you not mount the alternator straight to the PTO shaft and eliminate a lot of extra work or would it not spin up fast enough?

[Canadian_Zuk]

Could you not mount the alternator straight to the PTO shaft and eliminate a lot of extra work or would it not spin up fast enough?

Yes, the alternator wouldn't spin fast enough and it would probably be harder to fab a mount that kept the alt perfectly true to the PTO. The Pulley and V-belt setup is more forgiving with minor misalignments and also allows me to adjust the Alt speed. I was originally going to use a regular slotteed automotive adjusting bracket too but went with the threaded rod jacking setup instead. I did this so I could use a wide range of belt sizes, that way I have a better chance of finding replacements in a pinch.

[Dozerlarry]

10-4, kinda' figured that. You did a great job on fabbing the alternator mount!

[Canadian_Zuk]

I took the family for a short ride in the Max today and got a chance to get it wet for the first time in a local pond. It swims faster than I expected.

[Noel Woods]

Nice build. Yes those Argo tires are awesome swimmers. I have a set on a Max2 and am always amazed how well they swim.

[Andyman]

You built up a nice machine A+

[Canadian_Zuk]

You built up a nice machine A+

Thank you for the compliment, but I only put it back together

[jeffery9076]

Nice build. That thing swims really fast

[Canadian_Zuk]

Well I managed to get my tracks installed, but they are too tight with the 22" tires that came with them. I guess that explains why the tracks appear to be brand new and unused lol. I just ordered 6 new AT-101s and took a beating on the current exchange rate but it still ended up saving a few hundred dolars buying from south of the border. Luckily we've had pretty much no snow up to this point, I hope the tires are here soon

Anyway, here are pics of her with the tracks on. Just because everyone like pics

[philipatmaxfour]

Thanks for the movie in the water. I really appreciate that. i hope Liam catches the first fish.