komatsu d41 vs cat 941b

went and looked at a d41 today and going to look at the 941b tommorrow. d41s-3 s/n 06426
on the d41 it looks to be in good shape for the most part, paint is little ruff cranked and ran good,u/c looks good the sprockets are still good and flat and the pins cant even fell any wear on them where they touch the sprockets,i also noticed on the powershift it was hard to find neutrul,had a lot of side to side play in the shifter, is this something that can be adjusted or just have to deal with it?also in the 2nd pic is there still alot of track tension left in it? it measure 4 inches before it comes out flush.the bad thing i see with it is every single hyd. cylinder is leaking fluid. they guy said 2 yrs before he bought it someone was supposed to have put new seals in them and he thinks they put the dust seals in backwards? anyone have any idea what it would cost to have the cylinders resealed? he said he was quoted $900 for the parts to do all the cylinders. is that something someone can do there self or take special tools to do? got a couple pics of it but not to great, got him down to 8,000 but not sure it is worth it with the every cylinder leaking.


now on the cat i only know what i have been told in a email to the place that has it for sell supposed to run and operate good and have 70% or so undercarriage. not sure if it has been backed into a tree or what but the fuel tank looks pretty beat up, dont think that would hurt anything as long as its not leaking? i posted some pics of it as well. they are asking 10,000 not sure how much they will come off that price.
a165179.jpg

a165180.jpg

a165181.jpg

a165182.jpg

a165183.jpg

a165184.jpg
 
The Komatsu is a much more superior machine to the 941,its approx the same weight and has 10 hp more,its got 15.5 inch track pads against the 941 13 inch,it also has segment sprockets which is an important factor in the future,the cylinders leaking on the Komatsu after been resealed is because the gland bushings were not changed when the seals were,the resealing can be done without any special tools,just some heavy duty sockets and C spanner,the gear shift is probably worn linkage,the Cat has been cleaned and painted,the track pads are built up and the rails are worn,the sprockets look ok,the track frames have to come off should the rims need to be changed in future,the track is on backway,the Komatsu needs the few jobs doing and a good clean up and a coat of paint,the 941's was pron to overheating and knock the final drives out as every Cat does.
AJ
 
New paint can be a good or bad thing. The 941B is generally a good machine and the sprockets look new but the tracks are WAY TOO TIGHT. Looks like someone welded new grousers on the pads and left the middle one lower. Look at the rollers and see if the pin bosses have a flat spot from hitting them. That's a simple way to tell if the undercarriage is worn enough to be concerned. Looks like there's lots of adjustment left but count the number of pads to see if they are all there. You'll have to look to see how many a 941B should have. You have to realize with any used crawler, you're going to have to throw more money at it after you buy it. $1000 is peanuts on a crawler. Probably easier to get parts for the Cat but I'd get a mechanic or someone experienced to have a look at both of them. Make sure to try them out for a while and see how they work when warmed up.
 
what about the hyd. cylinders? can a good hyd. shop rebuilt these with out buying parts from Komatsu? any one have this done? price?
 
It is fairly straight forward to reseal the cylinders,we take the rods out leaving the barrels in place,then put the eye of the rod in the drawbar to hold it to undo the piston nut,pull the piston and gland off,it is important to change the bushing that carries the rod because if the bushing is worn and it will be,the seal will leak again in a few weeks,I cannot comment on the cost of the kits as I am the other side of the pond but you can look up Komatsu parts on line at the link below,someone said the price is shown,the bushing does not come in the seal kit,it has to be ordered separate.
AJ
http://komatsupartsbook.com/
 
(quoted from post at 00:34:38 08/10/14) So did you go to Lavern today? What was it like? Did he come down any?
no didnt get a chance to on count of rain, will try to go one day this week if i have a day off.
 
The Komatsu's that I came across were been used by large contractors in the demolition business,I have not see any D41S finals fail or transmissions failure,the plus side of the Komatsu over the Cat is the segment sprockets,wider pads and stronger track frames,when the undercarriage has to be changed its just split the track,change the segments/rollers and idlers,reseal the adjusters,drive from the old track to the new and connect it up,Cat,split the track,remove the track frame,remove the sprocket hub,pull the sprocket,take the cover off the final to inspect it,cover on ,press on the new sprocket,drill out the bolts that broke in the frame when it was removed,put the frame back on,new adjuster seals then the track,so you can see why the Komatsu was poplar,with any machine it is the amount of work done and the way it was used and looked after.
AJ
 
From where I sit I would say the chains are about shot on the Komatsu. Just because there's little wear on the outer bushings doesn't mean that the pins are not worn badly internally. It just seems to me that the adjusters are stretched out a long way. I'd say it's closer to 30% than 100%... the pads are also getting that thin/bent/beaten look they get on old worn carriage....
I don't know enough about the respective machines to make any more meaningful comment about them.

Rod
 
When you look at the bushings that ride the sprocket... just because you don't see wear on them... doesn't mean the pin that is internal to that bushing isn't worn. Particularly if you're dealing with a SALT chain. Seals can dry out on the pins, lose their lubrication and wear the pins out on chain that has very low hours and consequently very little other carriage wear... just because he machine sat and dried out the seals.
Those chains looks rather stretched to me from the angles of the pics I see...

Rod
 
got a call back from owner of the komatsu and told him i would like to run the machine alittle more before making a offer and he told me to run it all i wanted but told me about a problem with it when in reverse 2 he said if you push the right steering clutch down it would stop but if only pushed it half way down it worked correctly not sure if he meant the whole machine stopped or it stopped turning on the right side or what, phone was breaking up and couldnt hear. said it only done it while in r2 anyone have any idea what that would be?
 
Its likely the problem is in the control valve but it would put me off buying the machine,point being if its only something small why has he not had it repaired,with all the cylinders leaking,the shift linkage and now the steering it maybe this machine is worn out.
AJ
 
according to the owner he bought it to load chert to sell and has only sold 3or4 loads all year and now has got into a financial problem and needs to sell it to pay his debt. im taking a guy that has been buying and selling and operating dozers for years today to look at it to see what he thinks.
 
had the guy look and drive it awhile, told me to look for something else, or try to get it for around scrap price. has a little blowby, motor starts and runs great, pulls good and strong, but did not like how the clutches felt,
and also he said bottom end was around 30%
a165863.jpg
 
my uncle has a cat loader in middle tn. Excellent shape. call me at 931/994/7554 & Iwill get you together.
 
I think he gave you good advice,too much wrong it could run to a nightmare,its best to buy a machine that can go straight to work.
Good luck.
AJ
 
I'm posting this for Delton. It is a 951 near
Centerville, TN.

You will have to call for more info. I will not be
around email till monday.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top