450c Complete overhaul

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ryan71407
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450c Complete overhaul

Post by ryan71407 » Tue Apr 11, 2017 5:07 pm

So I found a 77 450c from a childhood friend that has been parked for 10 years. (not inside or with a cover over the muffler). The plan was to see if motor was locked up or not, well long story short the motor was locked up. After dissassembling and sending to a machine shop, found out the block was cracked in the sleeve. After adding up what it would cost to rebuild I just went and bought a re-manufactered 4039t. WAAAAYYYY cheaper than rebuilding old motor. This one came with all new JD OEM parts and was dyno tested. Heres some pics of how I found it. Progress pics to come!

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I have receipts from right when he parked it in 06, Basically all new undercarriage with new trans. So i knew after a good motor she would be ok...

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Engine removal!

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Frame rail repair on both sides and gusseted for strength

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Off to get Sandblasted! Stay tuned


New Jd motor pic
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77 Ford
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Post by 77 Ford » Wed Apr 12, 2017 7:10 am

Where did you buy your motor from?

Ive not seen very many dozers with the backhoe hooks on the back. Thats neat.

Looks like youre going thru it right the first time.
JD- 450C track loader
Serial #208336T

ryan71407
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Post by ryan71407 » Wed Apr 12, 2017 7:57 am

This is the backhoe, it will be going out for Sandblasting also when dozer gets back.

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ryan71407
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Post by ryan71407 » Wed Apr 12, 2017 8:01 am

I got the motor off of ebay from government liquidation, it is not a re-furb its a re-manufactured which means basically they change all parts out with OEM john deere parts. Motor Is brand new from starter to turbo. Its rated i think right at 100 hp. But way better fuel system and 24v starter and alternator should make it easier to start. Wanting to build a foresty Cab and put limb risers and muffler riser.

ryan71407
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Joined: Tue Apr 04, 2017 5:43 pm

Post by ryan71407 » Wed Apr 12, 2017 8:10 am

This is the foresty cab that I am making for it, should have a little better paint job also. Im using carboline carbomastic 15 for primer when they are done blasting it this week. Best paint you can buy.




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Grease Gun
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Post by Grease Gun » Mon Apr 17, 2017 6:38 pm

Keep the updates coming....looking forward to watching the progress on this!
JD 550 Dozer
Cat 955L

cantbeatadeere
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Location: new york..upstate..

Post by cantbeatadeere » Tue Apr 18, 2017 6:34 pm

MY HAT IS OFF TO YOU ------- Fantastic job :shock:

ryan71407
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Post by ryan71407 » Tue Apr 18, 2017 8:41 pm

Still looking for limb risers!!

Grease Gun
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Location: VA

Post by Grease Gun » Wed Apr 19, 2017 4:55 pm

So just to clarify, that is not your project dozer in the last picture, correct?
JD 550 Dozer
Cat 955L

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Paul Buhler
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Post by Paul Buhler » Wed Apr 19, 2017 5:06 pm

Are you located in Louisiana (71407)? Just curious, there might be a source in VT, but shipping might be pricey. I'll ask around. Paul
Paul Buhler
Killington, VT
420c 5 roll with 62 blade, FOPS, and Gearmatic 8a winch

ryan71407
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Post by ryan71407 » Thu Apr 20, 2017 7:47 am

No the last picture isn't mine! But I think my build will be as nice or nicer! And yes from lafayette la 70508.

Grease Gun
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Post by Grease Gun » Thu Apr 20, 2017 6:10 pm

I bet it will be!

While you have it down that far, are you going to check the transmission out? It would be a shame to do all that work and have to go back in.
JD 550 Dozer
Cat 955L

ryan71407
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Post by ryan71407 » Sat Apr 22, 2017 8:21 am

They went into the transmission when it was parked, I have a bill for $6400 for changing front trans case, pump, driveshaft, and setting all pressures. But like I said it sat for almost 10 years. I wonder what I need to look for in these trans??

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Paul Buhler
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Post by Paul Buhler » Tue Apr 25, 2017 12:45 pm

Since no one else has chimed in, I'd think that if no water got in, the transmission should be fine. I'd check the accumulator though. Being high on the machine it may have some rust from condensation in it. It acts like a shock absorber during forward/reverse shifts and the adjustments can be finicky. Best wishes. Paul
Paul Buhler
Killington, VT
420c 5 roll with 62 blade, FOPS, and Gearmatic 8a winch

ryan71407
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Re: 450c Complete overhaul

Post by ryan71407 » Mon Jul 10, 2017 10:24 am

So Im about to have it blasted, sandblaster wants to remove tracks to blast it correctly. First of all how do you remove the tracks? Second what should i look for or change while its apart. (seals) etc...

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