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D8H worth and what it takes to start.

JakeHarrington

Well-Known Member
Joined
Oct 5, 2016
Messages
77
Location
Long Island NY
I recently have bought some land and it has come with 5 very old D8H dozers. one runs great while the rest have sat for a about 5-10 years. from what i understand they all ran fine when they were park but they just weren't used. 4 of them have the hydraulic blade while 1 has the cable lift instead. tracks and undercarriage all look decent actually. all of the dozers look to be of the D8H 46A family.
I'm hoping some of you guys know what they are worth. any maybe some pointers on how to get these suckers running again.
even i just scrap them, which would kill me to see a machine like this go, but what is the scrap value?
are they even worth trying to start. i am a pretty good diesel mechanic but never had to mess with a pony motor before. they were little before my time. if the tags are missing where can i find the numbers stamped?

i also have about 5-6 977L or similar to that track loaders. one runs but the rest do not. i haven't had an opportunity to get the number of them but are they worth get running? any hints of where to find the serial numbers? or just scrap them.

there is also a d6 on the land but i can't find the number on it anywhere. any hints?

i know that this is a long post with a lot of questions but any help is greatly appreciate all the responses. this is my first post on this site.
 

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
12,495
Location
Canada
You bought land with all this equipment? I'd check them over as good as I could and then see which ones are worth trying to get going.
 

RBMcCloskey

Senior Member
Joined
May 4, 2011
Messages
399
Location
New Jersey
Occupation
Heavy Construction Contractor
I recently have bought some land and it has come with 5 very old D8H dozers. one runs great while the rest have sat for a about 5-10 years. from what i understand they all ran fine when they were park but they just weren't used. 4 of them have the hydraulic blade while 1 has the cable lift instead. tracks and undercarriage all look decent actually. all of the dozers look to be of the D8H 46A family.
I'm hoping some of you guys know what they are worth. any maybe some pointers on how to get these suckers running again.
even i just scrap them, which would kill me to see a machine like this go, but what is the scrap value?
are they even worth trying to start. i am a pretty good diesel mechanic but never had to mess with a pony motor before. they were little before my time. if the tags are missing where can i find the numbers stamped?

i also have about 5-6 977L or similar to that track loaders. one runs but the rest do not. i haven't had an opportunity to get the number of them but are they worth get running? any hints of where to find the serial numbers? or just scrap them.

there is also a d6 on the land but i can't find the number on it anywhere. any hints?

i know that this is a long post with a lot of questions but any help is greatly appreciate all the responses. this is my first post on this site.
Where are you on the Island? I might have time for a look, I am in NJ
 

ol'stonebreaker

Senior Member
Joined
Apr 26, 2015
Messages
333
Location
Idaho
Occupation
retired
As for the pony motors I'm sure there's you tube videos covering them for checking and starting them. Also for engaging the pinion and clutch to crank the diesel engine. Once you get the basics they're a simple starting system. If the ponies were left w/ gas in the carb and gas tank I'm sure you'll have a lot of varnish to deal with. Seafoam cuts varnish very well.
Mike
 

Metalman 55

Senior Member
Joined
Feb 6, 2013
Messages
1,301
Location
Ontario
Some pics would tell a thousand words.

Mike.

I 2nd that. It would be very interesting to see all that old iron & find out how that many machines came to be resting in one spot. Are the 977L's on the same property?
 

JakeHarrington

Well-Known Member
Joined
Oct 5, 2016
Messages
77
Location
Long Island NY
ya it was owned by an older gentleman that pasted away and the land just sat for about 5 years. the kids didn't want anything to do with the machines or land. so i picked it up.

i will get some pictures of everything this weekend.
does anyone know where i can get one of these direct electric starter conversions. I'm very interested in that.

the land also came with 2 case 1080b that run
988 orignal model from what i can tell with the radiator stolen out of it.
980b 89p prefix that runs

and 3 ancient scrappers that are in real bad shape. they are about 75 feet long a piece. ill probably just scrap those unless anyone wants them.
two old link belt cranes that are junk.
and 3 mark 2 power screens that i will be running myself.

with that being said i have some work ahead of me. haha
i really wanna get these dozers running and the track loaders running first.
 

Hobbytime

Senior Member
Joined
Sep 21, 2016
Messages
709
Location
usa
was the property an old sand and gravel pit? is it located on long island? sounds like you have some resto work to do..
you have to cut up all that big stuff into short steel to get anything from the scrap yards...
 

old-iron-habit

Senior Member
Joined
Nov 22, 2012
Messages
4,233
Location
Moose Lake, MN
Occupation
Retired Cons't. Supt./Hospitals
Don't cut them up. Us antique Cat fans start them old machines all the time after they have been setting for 10 and even 20 or more years. Go to the ACMOC BB site and throw your questions out there. We have some very knowledgable folks in Long Island that I'm guessing would be happy to meet with you, give you some pointers, and probably help start them. I sure would if I were a wee bit closer. Always cool to here a machine start up after a long nap. A couple of weeks ago we started a pony start Model 12 grader in 4 hrs after it sat outside for 18 years. A little knowledge about simple procedural things to check before starting can go a long way. If they ran when parked and never got water in them or froze up they usually are not real tough to fire up. A lot depends on how they were put away. P.S. Feel free to use my name over at ACMOC and mention I sent you over.

The serial numbers are on the engine block toward the rear on the left side as sitting on the seat. It is also on the back of the transmission case on the left side about 2/3 of the way up the case. If it has a winch it may be covered. My2U serial is not covered by the CCU double drum unit. If the rear tag is tore off the serial number is also stamped into the casting under it. You can usually find the rivets where it was. The engine and back serial number will match if it has the original engine block. Post the serial numbers when you get a chance and I should be able to tell you the manufacture year.
 
Last edited:

JakeHarrington

Well-Known Member
Joined
Oct 5, 2016
Messages
77
Location
Long Island NY
Alright thanks alot guys. I will get all the serial numbers and some pictures this weekend. Some of them are really grown in with trees let me tell you.
I guess i better make an account over at acmoc.
Im really excited to see these machines get going and appreciate all the advise i can get
 

walkerv

Senior Member
Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
Here is the conversion starter source I was referring to. Be sure to request the RH helical drive pinion not the LH version.
http://www.ebay.com/itm/NEW-50MT-PO...ash=item19d37f3f6e:g:lJEAAOSwvgdW2czY&vxp=mtr

From my understanding of pony motors selling them would probably buy the starter cables and batteries to convert if they were in good working condition or are they not worth that much? Hear that parts for them are expensive and hard to get other then normal maintenance items
 

Kennebec

New Member
Joined
Oct 14, 2016
Messages
1
Location
Maine
If you're looking for the starting procedure/sequence I am happy to explain it (at least how I go about it.) I bought a 1969 D8H earlier this year and had never dealt with a pony motor start before but once you do it a few times it is no big deal. With an old machine that has sat around you will probably have a harder time getting the pony motor up and running than the main engine.
 

Old Magnet

Senior Member
Joined
May 11, 2010
Messages
2,010
Location
Corralitos, California
From my understanding of pony motors selling them would probably buy the starter cables and batteries to convert if they were in good working condition or are they not worth that much? Hear that parts for them are expensive and hard to get other then normal maintenance items

Pony motors are kind of a strange market. They don't seem to change hands much until some one actually needs one and prices are all over the map. Yes, they are expensive to rebuild, especially if you have to farm out the work. Parts seem to still be available. Also need to be aware of early and late models with their changes in engagement mechanisms.
 

ol'stonebreaker

Senior Member
Joined
Apr 26, 2015
Messages
333
Location
Idaho
Occupation
retired
Another trick to know about pony motors is: after the main engine is started, shut the pony motor fuel valve off and let the carb run dry or it will wear out the float needle and seat due to the gas sloshing around in the float bowl.
Another plus for the pony: in cold weather starts you can crank the main engine long enough to get the oil circulating before starting.
Mike
 
Last edited:

DPete

Senior Member
Joined
Feb 21, 2007
Messages
1,677
Location
Central Ca.
A lot of newbies to the starting engine will crack the throttle first thing even before engaging the bendix, all this does is dump cold fuel into the cylinders. You crack the throttle last after you have run the starting engine engaged with the compression release on run, this gives the cylinders time to warm up and inhale warm air thru the intake manifold as the pony's exhaust runs thru the intake. The colder it is the longer you run it.
 
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