Komatsu D20A-6 ?

[tlbuser]

Here's a link for those . Can get in-dash or remote mount too. They have a cool fuel filter switch too.
Automobile Parts, Air Filter, Monitor, Car Accessories, Engineered Products

 

[schmism]

wont be long and he'll be fabing up a 3pt for the back of his dozer!

I love the mods!

 

[GuglioLS]

Steve,
Glad you like the mods.

The TPH - Not too far fetched of an idea, I have entertained that idea. Not sure if I need / want a TPH quite yet. I am thinking of somehow being able to mount my TPH backhoe on it. Sub-frame or something that would be real easy to get it on and off.

Larry

 

[Wayne County Hose]

I don't know if it has been covered yet as I'm jumping in here late, but one thing to keep in mind on your Komatsu. They use their own style of fittings. Not everywhere, but more so than not. They look like JIC but have a different thread and a 30 degree seat as opposed to 37 degree for JIC. You won't find these fittings at an auto store or TSC. You may want to call around and check where you can get them before you really need them.

 

[GuglioLS]

Andy,

You are correct, all the hydraulic fittings are 30* JIS (Japanese Industrial standard) as opposed to JIC. The JIS fittings are readily available on-line or at any decent industrial hydraulic repair shop or supplier. (they have the ability to make hoses with JIS fittings. I've already had a couple of hoses made so that I could tap into the hydraulics. That's how I installed the valve to control the dump trailer. (See page 9 reply# 89 of this thread) here is just one of many on-line sources for those fittings -> Japanese Industrial Standard Fittings

Do you stock those fittings?

Larry

 

[Wayne County Hose]

Andy,

You are correct, all the hydraulic fittings are 30* JIS [/URL]

Do you stock those fittings?

Larry

I think you may want to check again. They may be JIS, but I've never seen JIS on a Komatsu. Komatsu has their own fitting, called Komatsu Thread. They don't interchange. I may be wrong here, you have the machine, I don't. But, they are 2 distinctly different threads. JIS has the same thread pitch as British pipe thread, believe it or not, they are not metric. Komatsu thread is a metric pitch.

And yes, I do stock both JIS and Komatsu. I also stock adapters to JIC.

 

[Wayne County Hose]

Thanks Guys!
I pulled off the dozer floor plate & the drivers seat to access the existing dozer valve and to route in two new hoses. I had the hoses made with Komatsu JIS 22 mm x 1.5 mm metric female on one end and 3/4" NPT pipe thread on the other. No messing around with adapters. I had all the fittings & quick connects to add the remote valve, so it all went together rather quickly.

I just looked at the thread on page 9. Quote is above.
22mm x 1.5mm is komatsu thread on a 1/2" hose. JIS this size would measure 1/2" x 14 threads per inch. I just tried to screw a JIS female on a Komatsu male, no go. JIS is usually on European stuff. I've seen it a lot on Allis Chalmers tractors made in Romania.

Something I've been wondering. Is there any komatsu thread hoses on there that look like they may be 4 wire hose? (4 k.p.s.i.) I was wondering if I should stock 4 wire Komatsu crimp fittings. I haven't had a call for them yet, but they are a lot of money to stock. I would like to have them, but if there aren't any out there, why bother.

 

[GuglioLS]

The Komatsu cone seal is 30* (JIS) however, yes the threads are metric (Komatsu).
My statement

Komatsu JIS 22 mm x 1.5 mm metric female

is basically correct, I guess what I should have said was "Komatsu fittings - (30* JIS cone seat) with 22 mm x 1.5 mm metric female threads" sorry if that confused you or anyone else - my bad. The shop that made the hose for me used a 5/8" 3000? or 4000? psi (not sure) hose on it as opposed to a 1/2" one. I guess they have a good stock of Komatsu crimp hose ends for many different applications. I don't know if it's a four wire hose or not, the bottom line is I was able to tap into the hydraulics, so now I have a remote on my dozer that operates my home made hydraulic dump trailer, to me, that's what really matters the most.

Larry

 

[DrRick]

A bit off subject- hope it is OK-
are you familier with the fittings on my case 170c excavator ( made by poclain in france) I have had to cut the hoses off of the fittings, then cut the barb off and weld on a male fitting I got from the hydraulic shop. This allowed me to attach a standard new hose with fittings to the machine. The last time I had this done I had 5 foot of 5KPSI hose made and I cost me about 330 bucks. I was wondering if there are any adaptors for these french type conectors.
P.S They are made like a exhaust flange fitting and bolt together with 2 bolts.
rick roberts

 

[GuglioLS]

I've been doing quite a bit of work on the new road with the dozer. Been hauling dirt up to the hairpin turn with the dump trailer every weekend since completing all the firewood cutting for the season. Last week I picked up a 5 pound ABC fire extinguisher with a heavy duty metal holder strap. Today I installed it on the crawler before starting the days work activities on the road. We now have fire extinguishers installed on every Tractor, Dozer, ATV, all our autos, every room in the house, garage, basement and barn. Out here in the high & dry mountain desert it's prudent to have them in sight and within easy reach.
First was to find a suitable location with access from either the drivers seat or standing nearby. It also had to be out of the way and not obstruct my vision or operation, with protection from being ripped off by tree branches. I settled on mounting it to the ROPS. The tubes are 3" square 1/4" think, so I don't think drilling a few 5 mm holes are going to make any difference in it's integrity. The 5 mm holes were then tapped 6mm x 1 mm thread pitch. These are the smallest "bolts" anywhere to be found on the dozer. I want to keep everything on it metric to keep it simple.




Larry

 

[GuglioLS]

After all the holes were drilled and tapped, the mounting strap was bolted on. Then the extinguisher mounted.




I sure hope I never have to use it, but in the event there is an incident, I know it's there ready for action. Sometimes having something quick and easy early on can avoid a major catastrophe.


Larry

 

[machmeter62]

LARRY: You still amaze me with your talent and forsight in solving problems. The rebuilding of the Komatsu D20A-6 still amazes me of the ability of you and Rob, for that challenge! With pictures showing all the processes in the restoration, plus the additional improvements is classic; and very helpful to others who may want to purchase a similar tractor in the future?

You maybe getting a call from Komatsu, or a publishing company to write a repair manual......trouble shooting, and etc. in the future, with the picture of your tractor on the cover!? Then sit back when all the profits flow in from the book sales? I really enjoy seeing all the progress with the tractor too, and the trailer dump system is time and labor saving!
LEE

 

[GuglioLS]

Lee,

Thanks man, your words are too kind.

You maybe getting a call from Komatsu, or a publishing company to write a repair manual......

I wish - Here is a little secret about Komatsu's - Contact your dealer, open an account, then ask them to register your machine, then go on-line to mykomatsu.com add your machine and viola you have instant on-line access to the complete parts breakdown and part number manual, for FREE. Not only that you can simply click on a part# to add it to a shopping cart, then order on-line. I was amazed how convenient their service is. I was able to convert every single part illustration into an adobe doc then save to my hard drive. I now have an electronic illustrated parts list for every single part on the dozer, from a complete illustration and breakdown of all engine components right down to the smallest nut, bolt and washer for the tracks.
Here are a few examples of the illustrated parts list:



Of course the image quality is better before I saved them a jpeg file format AND you can zoom in on any part.


Larry

 

[EddieWalker]

Larry,

That just might be one of the reasons I see so many Komatsu machines out there. They really do seem to be about the most common name around. I've never been on one of them, but would consider them as a top brand when buying.

I love the ability to look up the parts and order them online. Just seeing how they go together can save hours in figureing out a broken part and how it comes apart!!!!

Sears does the same thing with thier lawn mowers, and maybe other stuff too. It's very easy to order a replacement pully or belt from them. I just wish New Holland and Case would do the same thing!!!!!!!

Eddie

 

[GuglioLS]

....I love the ability to look up the parts and order them on-line. Just seeing how they go together can save hours in figuring out a broken part and how it comes apart!!!!....

I'm so surprised not more companies are doing this. It would save a ton of costs just by having people looking up their own parts. I bet the service departments are distracted a million time a day with people asking how things come apart or go back together. Let alone chasing down part numbers.

Small update on what Me and the little Komatsu have been up to lately -

Using the dozer & tractor as a team, I collected all the stumps littered along the sides of the new road. I had just finished hauling up the last load of fill dirt for the hairpin turn with the dozer when I decided to fill the trailer with stumps before heading back down. Most of the stumps were light enough to toss into the trailer by hand, but a few were fairly large ,so the grapple was used to pick them up. Here are a few photos of what I was doing this past weekend.



Larry

 

[GuglioLS]

After over filling the trailer, I then thought what the heck am I going to do with all these ??? Because it's so dry, burning them is out of the question. So I just dumped them into a gully and pushed a little dirt over them and called it good.


Larry

 

[EddieWalker]

Larry,

Nice pictures. I think that you can use one them with both tractors and your trailer for Christmas cards!!!!!!!

Eddie

 

[GuglioLS]

Thanks Eddie, great idea.

I was reviewing this thread and discovered I did not document the install of some ammo boxes or the rear view mirrors. You all probably saw them in various action shots? I thought I would post a few pics to show the detail on how they were mounted. First the ammo boxes:



When Rob (3RRL) & Loretta came to visit, I took them to Surplus City in Albuquerque, a huge surplus store with just about everything you could imagine. While they were browsing around, I picked up a couple of ammo boxes and some mirrors for the Dozer.

Rob helped me layout the holes to be drilled in the bottom of the boxes for mounting. After we drilled them out and checked for fit, They got primed and painted with a close matching Komatsu Dozer yellow. There is a plate with tapped holes underneath the boxes. Those plates were for the OEM canopy that at one time was removed and replaced with a very beefy aftermarket ROPS, so those tapped plates were just the place to mount the boxes. In them I store, gloves, sunglasses, gate remote, coffee thermos & bottled water etc. They are pretty handy as they can be opened and accessed while sitting on the dozer or standing besides it.

Larry

 

[GuglioLS]

These 8" convex mirrors are a great addition to any Dozer or tractor. They sure do come in handy when backing up. I've been using the dozer to haul around a dump trailer, with some practice, I have learned to use them efficiently. For the most part I no longer have to turn around to look when while backing up. The is no vibration in the image so the view is clear and large enough for ease of use. With a quick glance I can see what is just about to get flattened by running over it back wards. They were attached to the top hand rail mounting bolt.




Larry

 

[machmeter62]

LARRY: I am considering purchasing some acreage in the Cascade Range of the Pacific Nortwest, and after following your site here, I have been looking at the Komatsu tractors with similar 40hp engine?

I believe the elevation of my acreage would be similar to yours, (5000'+-) elevation? The question is: Will your engine "bog down" under a full load, or still spin the tracks in the lowest gear at your highest ranch altitude? I have also spotted one with a LP engine on rubber tracks, that was used in a logging environment; the same model as yours, I think? Any thoughts on the LP engines, or rubber tracks? I know LP has less BTU's/unit volume than diesel fuel, and know nothing else about it's performance. The use would be similar to yours, with light road construction and fire prevention for the summer months there?

Thanx in advance for your time and thoughts.

LEE