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AC Mel 
Orange Level Access
Joined: 23 Jan 2010
Location: N.Ca.
Points: 1101
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 Topic: HD21B put in service
Posted: 18 Apr 2015 at 12:01pm |
So since the logging show we've been working on this HD21B. We acquired this tractor many many years ago after the previous owner had removed the transmission to do repairs. It sat for several years after they had repaired the transmission, but no one wanted to put the transmission back in. We picked up all the pieces and got it home where it sat some more. We actually went back into the transmission and changed some main bearings that we could see had some rust showing up from moisture. After we got it going we got to busy to work on it, so we parked it and the sprocket shaft final seal promptly leaked oil. Knowing that needed fixing before we could go on (kinda took the fun out of it). That was 4 years ago, so fast forward to today. We have a opportunity to do some vineyard prep (ripping and digging stumps etc.) for a neighbor. Here's the story so far.  Get the swing frame off, a big forklift helps. Build a outboard bearing wrench This is the puller setup we use to pull the bearing Then you get your big sprocket nut wrench out After the nut is loose you have an after work beverage while you set up the sprocket press The sprocket press looks like this (and makes a loud pop!) when it comes loose at 60 tons Use the forklift to remove it. It looked like the metal sealing ring was not tight against the bearing retainer allowing the rubber seal to slip out the bottom and leak ( I think that was the smoking gun) Press it back on like this. Had to get more creative for the outboard bearing press, but it worked.  So David's got the paint shop open now. We had 10 gallons of Caterpillar paint unopened from 8 years ago. We got some clean buckets and began stirring and dumping back and forth. As you know we haven't needed much yellow paint lately,but this late model AC stuff (LOL) needs to be yellow as it was when new. We have used the Cat paint for yellow. It's good paint and just about as economical as any thing else. John finished washing and we also did some sanding   So this was what it looked like yesterday. The rest of the paint is going on today Stay tuned
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darrel in ND
Orange Level
Joined: 22 Nov 2009
Location: Hebron, ND
Points: 8633
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Posted: 18 Apr 2015 at 12:57pm |
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You and your crew never cease to amaze me. I think you must get more stuff done in a day than I do in a year. Love all the pictures and stories to go with them. Glad you are bringing new life to all of this old Allis equipment. Thanks, Darrel
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donoman
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Joined: 18 Feb 2015
Location: New Zealand
Points: 117
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Posted: 18 Apr 2015 at 2:19pm |
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It would be great to see a video of it ripping the stumps out when its back at work
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Ray54
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Joined: 22 Nov 2009
Location: Paso Robles, Ca
Points: 4505
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Posted: 18 Apr 2015 at 5:39pm |
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My uncle had a 69 HD 21 from 73 until he died. He worked on the finals a number of times.The last several times he used a guy from the oil fields that had equipment put to liquid nitrogen on, so parts would slip together with the bearings and such. He covered the garbage for the city of Paso Robles Ca for about 15 years.Lots of stuff to wrap into the finals and take out seals when some of the pour help didn't clean them out.Don't know how similar this final is to the older ones he ran.May not be rocket science to repair one but not possible without good lifting equipment and the special wrenches. Uncle was one to sit and have a cold one if things would not go together rather than get impatient with it.
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Mactractor
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Joined: 20 Jun 2011
Location: New Zealand
Points: 652
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Posted: 18 Apr 2015 at 6:37pm |
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Its gotta be those beverage intervals that help these boys get so much work done on the tractors. We should all follow suit to increase productivity and reduce stress.
Great work Mel
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B26240
Orange Level
Joined: 21 Nov 2009
Location: mn
Points: 3860
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Posted: 19 Apr 2015 at 7:01am |
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Wow you guys have all the stuff needed to do the heavy work!!! Most amazing and thanks for posting all the great pictures.
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ACcrazy
Silver Level
Joined: 30 May 2012
Location: Eureka, Califor
Points: 97
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Posted: 19 Apr 2015 at 9:22am |
Yeah!! A big, bad 21!  Great work, Mel. 
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JC-WI
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Joined: 11 Sep 2009
Location: wisconsin
Points: 33822
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Posted: 19 Apr 2015 at 11:59am |
Darrel in ND, when you said, " You and your crew never cease to amaze me. I think you must get more stuff done in a day than I do in a year." I was thinking more on the abilities that Mel and crew possess, they use more of their abilities and talents in one day than some have had in the totals of their lifetimes.
As always Mel, you guys do excellent work at bringing them old machines back to life and useable conditions again.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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scooter01922
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Joined: 31 Jan 2015
Location: massachusetts
Points: 30
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Posted: 19 Apr 2015 at 3:13pm |
Excellent work, we are going to absolutely REQUIRE some vid of that brute back at work and lookin pretty. Keep it up
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hd16b
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Joined: 12 Jan 2011
Points: 88
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Posted: 19 Apr 2015 at 7:42pm |
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Mel,I wish I could borrow your tools and knowledge.i also have seals leaking on my 16b. Been putting it off because I don't know how I am going to pull off and press on the sprocket. I just love working on old dozers,if I was close to you I would work in the off season for you for free,doing it just for the experience.
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1101
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Posted: 20 Apr 2015 at 11:11pm |
Thanks for all the nice comments guys. So here's how the painting has gone so far      So the track went on yesterday, the canopy and sweeps today, the blade tomorrow and hopefully a trial run. I placed an order with Speer Seat Cushions for the seat and armrests.
Also we'll get some video to happen when we get going.
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jorstad brothers
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Joined: 10 Jun 2010
Location: tioga nd
Points: 473
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Posted: 21 Apr 2015 at 7:52pm |
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mel thats a nice 21 u have there all of them up in this country are wore out
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remember plunder than burn
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
Points: 1101
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Posted: 21 Apr 2015 at 11:43pm |
Todays events looked like this       Ok so I've got video but having trouble geting it uploaded. I know, I know, any one that can work on these old tractors should be able to upload video too. (I'll get it)
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JC-WI
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Joined: 11 Sep 2009
Location: wisconsin
Points: 33822
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Posted: 22 Apr 2015 at 2:02am |
Day~um, those pics were so good lookin that I could almost smell the new paint and the smoke rollin... She sure looks like its working good.
As always , you guys really do a good job bringing the dead back to life... and looking best they have in many a years...
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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SHAMELESS
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Joined: 13 Sep 2009
Location: EAST NE
Points: 29486
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Posted: 22 Apr 2015 at 2:14am |
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how come you don't paint the inside or outside of the tracks? and you guys are like the "king of obsolete" or he's like you guys! great job!
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31048
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Posted: 22 Apr 2015 at 4:17am |
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Ol' girl looks good in new dress, looking sharp. How did the 21B end up with split segment SALT rails? Wish I had a set for my little 7G.
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hd16b
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Joined: 12 Jan 2011
Points: 88
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Posted: 22 Apr 2015 at 5:52pm |
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She looks wonderful mel, first chance you get I would love to have a close up on the muffler set up,I have been wanting to make mine like that
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HD6GTOM
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Joined: 30 Nov 2009
Location: MADISON CO IA
Points: 6627
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Posted: 23 Apr 2015 at 10:48am |
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Thank you so much for the pictures and the hard--hard work to get these old gals back in operation. Now if I could only get my old gal---well never mind.
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Lazyts
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Joined: 05 Feb 2012
Location: Manitoba
Points: 627
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Posted: 26 Apr 2015 at 10:16pm |
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Nice looking 21 to be sure. Also curious as to the rails- maybe from a D8? Would like to test out a 21B or 21C someday...
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
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Posted: 27 Apr 2015 at 9:49am |
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Yes those are D8 tracks (Berco). The previous owner had put those on with the help of a mechanic who had done the research knowing that the pitch was the same as the 8s. Everything was compatible and it sure made it easier to work on.
Doug, I'll get some close ups of the muffler and email you.
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HD6 Merv
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Joined: 03 Aug 2010
Location: New Zealand
Points: 480
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Posted: 28 Apr 2015 at 3:56am |
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yep both are the same; D8H and HD21; 9 inch pitch
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tits tyres and tracks
they all cost you money
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
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Posted: 12 May 2017 at 12:11pm |
Here's an update for the 21B. We got a gig ripping some vineyard ground for our neighbors. We had to load it on the cozad and move it 1/2 mile down the road
  We postponed the job for 2 weeks because of over 60'' rain.
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HD6GTOM
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Joined: 30 Nov 2009
Location: MADISON CO IA
Points: 6627
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Posted: 12 May 2017 at 12:56pm |
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Good Greif that is one healthy looking bruit. Great Work Guys
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Lee Bradley
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Joined: 13 Oct 2009
Location: Kingston, WA
Points: 117
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Posted: 12 May 2017 at 2:31pm |
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As has been said, nice tracks. Just looking those look like extreme service rock grousers.
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JohnCO
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Joined: 11 Sep 2009
Location: Niwot Colo
Points: 8992
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Posted: 12 May 2017 at 10:30pm |
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Another wonderful looking and running machine, I, along with everyone else on this forum are really impressed with your work.
I was on a farm tour in your area about 20 years ago and we came past a vineyard that had just been dozed out, two D9's or D10's sitting next to a big pile of posts. wire and plants. Vineyard owner had decided he had two many of that variety of grapes, going to replant something else. Some people out there must have more money then sense!
Darrel, the reason they get so much more done then you is there are more of them and it's not 40 below and snowing half the year!
Edited by JohnCO - 12 May 2017 at 10:31pm
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"If at first you don't succeed, get a bigger hammer"
Allis Express participant
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JC-WI
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Joined: 11 Sep 2009
Location: wisconsin
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Posted: 13 May 2017 at 12:21am |
 JohnCO wrote:
Another wonderful looking and running machine, I, along with everyone else on this forum are really impressed with your work.
I was on a farm tour in your area about 20 years ago and we came past a vineyard that had just been dozed out, two D9's or D10's sitting next to a big pile of posts. wire and plants. Vineyard owner had decided he had two many of that variety of grapes, going to replant something else. Some people out there must have more money then sense!
Darrel, the reason they get so much more done then you is there are more of them and it's not 40 below and snowing half the year!
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an that is pretty close to true.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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DMiller
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31048
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Posted: 13 May 2017 at 9:12am |
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Awesome machines, saw one years ago working coal pile at one of Ameren's stations, was HUGE! with a coal blade on it.
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tadams(OH)
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Joined: 17 Sep 2009
Location: Jeromesville, O
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Posted: 13 May 2017 at 3:32pm |
What a load. How much does it weigh ?
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Mikez
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Posted: 13 May 2017 at 11:46pm |
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Wow that's a cool dozer. You sure do get a lot done with your projects. I think I'm a little jealous.
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AC Mel
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Joined: 23 Jan 2010
Location: N.Ca.
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Posted: 14 May 2017 at 10:08am |
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We think it weighs over 80,000 lbs. We tried to weigh it the first time we hauled it, on our truck scales. There's an incline to our scales and the lowbed is close enough to the ground that it high centered with the truck axles on the scales and the trailer axles still coming up the ramp. Well that took some weight of the truck axles, so the air bags dumped some more lowering the trailer onto the ground all the way. We got if off by pulling it backwards with one of the 11Bs. That was difficult cause the ground is hard packed and it just wanted to spin. So we haven't tried that again, but someday we'll get the exact number.
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