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Reviving another old relic - D9G

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4 years 10 months ago #203787 by Davross22
Replied by Davross22 on topic walking the G
Hi guys. Has the old been walked as yet? If so how did it go?
walking these considerable distance helps in many ways with lubrication. Final drive seals may leak after sitting so long then driving. If they do, try moving again so the final drive ends up 180deg further round, most likely the leak will stop. I drove one three hundred klm plus, laying cable at 1.2 M deep, she just loved it. brings back memories. As Though as Deas says, they don't like backward.

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4 years 10 months ago #203789 by Deas Plant.
Replied by Deas Plant. on topic Already Driven.
Hi, Davross22.
As I understand it, this D9G was walked for some distance from where it had been parked for some time to its new home. Those D9G final drives weren't quite bulletproof but they were still pretty good stuff.

I spent a little time on them too, doing rock work, pioneering, clean up work, pushing scrapers and a few other things as well - LOVED 'em. A better machine than the D9H, both for balance and reliability.

Just my 0.02.

You have a wonderful day. Best wishes. Deas Plant.

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4 years 9 months ago #203847 by Misterskill
Yeah mate, walked it home in 2 stages. blocked the tracks with some hardwood (Track adjusters gone) and banged and crashed our way home in first about 6kms. It was a very long trip, but managed to only cross 1 bitchumen road which was good haha



Hope you're right Deas. It's got to earn it's keep after all this!

EDB. yeah, got her out exactly like that. I now have a very bent brass drift haha visit to the scrap metal man next week to see what i can find

2 new gears lined up, full bearing and gasket kit (I will check the lip on the race).
Attachments:

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4 years 9 months ago #204816 by Misterskill
Bit of an update

All bearings and O-rings done, 2 gears replaced, 3 of the carrier roller planetary shafts, one cir-clip and spacer/retainer was damaged so we changed them and one set of friction disks was fretted so we changed them out too. All genuine cat parts, i don't want to do this again any time soon...

back together with a quick coat of paint and ready to put back in. hopefully one night this week or over the weekend if the wind holds off.

Hydraulic rams are back and seals done on the tilt cylinder and head, again waiting for the wind to go away and we can start putting them back together too. Hopefully start to look like a 'dozer again!

Dropped in at Andamooka a while ago, they had a few old tractors parked on the side of the road. The little one is an international and the big one is a bit of a mongrel i think, it's got a leyland 600 in it. Not Cat's but pretty cool none the less.

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4 years 8 months ago #204824 by Deas Plant.
Replied by Deas Plant. on topic Oldies????
Hi, Misterskill.
Lookin' good. Hope the wind drops for you. It can be near impossible to keep dust out things when the wind is blowing 1/2 a gale - or more.

I think the bigger dozer in your photos may be a Fowler Challenger Mark 3 and what's left of the small crawler appears to be the place where there once was a McCormick Deering T20 TracTractor.

Just my 0.02.

You have a wonderful day. Best wishes. Deas Plant.

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4 years 8 months ago #204851 by edb
Replied by edb on topic Dusty Shop
Hi Team,
a mechanic I worked with did his time at a Ford Dealership in Dimboola.
He was taught to dry assemble engines, transmissions, tractor hydraulics etc. cover as you go.
Then when time to actually final assemble with fitting of covers etc. to then blow it all off with air, and quickly seal it up before the dust got a chance to build up too much on the oily bits.
Said he never saw any failures. Kinda goes against all I was taught but you have to go with the hand you are dealt-so to speak.
Of course there is dust in a workshop and there is dust in a lean to building, versus the blue/grey roofed shed--open air.
Cheers,
Eddie B.

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4 years 8 months ago #204856 by Misterskill
Wind let up this afternoon for a few hours. Got one lift ram done, no issues.

Go to put the tilt cylinder ram back together. unwrap it from the packaging, clean it, hone the cylinder, go to put the head on and nope, won't go on the ram. Hone the bronze bush in the head and still no. get the micrometer out and measure the freshly re-chromed ram, 88.5mm measuring vertically and 89mm horizontally. Sometimes i wonder why i bother....

1660km round trip back to CAT it goes...

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4 years 8 months ago #204877 by d9gdon
Nice work on the transmission. Those gears were definitely roughed up a bit. You're in it now for more than sentimental value.

I always think this Power Shift transmission must have been a huge technology advance back when it came out in the early '60s compared to other pieces of equipment.

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4 years 8 months ago #204906 by Andrew
I will be in Coober Pedy tomorrow. Will you be around 0428717065

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4 years 8 months ago #205808 by Misterskill
Other lift ram done. got it all ready to go back together, trying to push it back into the cylinder and one piston seal popped out of it's little groove and stretched, Doh!

Got a new one, put the old wear ring on it with a big hose clamp and put a bit of tension on it for a few hours, drowned it in oil and she slipped in no worries.

Trans is in, TC is in, all pipes and hoses back on. Both lift rams done so we figured we better start the old girl up.

Put 80l of trans oil in it (over full on the stick) and filled the hydraulic tank over full on the stick.

started it up (no bangs or crashes from the trans which is brilliant!) and both levels back off the stick again. TC pressure gauge is in the high red for a bit then drops into the green. this is all at idle

another 30 in the trans and kept topping the hydraulics up until i had to go home and get more oil

finally pull the lever and one ram comes in and one out, some clown (me) hooked the hoses up the wrong way haha

Ahh well, swap the hoses over tomorrow and see if we can get them working properly

One other thing i noticed was with the tractor not running the gear selector is under a lot of spring tension to stay in N. if i push it down into gear it springs back with a "boingg". i took the top off the valve bank and yeah there is a big spring in there.

looking on here it may be due to low/no oil pressure. or i have put something in backwards. really hoping the former. I havn't tried it with the tractor running yet.

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