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- เผยแพร่เมื่อ 6 ก.ย. 2021
- Bobcat T300 track loader drive motor failed and needs to be disassembled and inspected before rebuild. This motor was locking up and would not allow the left side to drive. Internal brake failure is one of the most common failures with this style on drive motor.
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Great description and teardown instructions. Thanks for posting.
The speed sensors for these are discontinued on the SJC units. There is new software that programs them out. They aren’t used anymore. I finally found this after calling Bobcat directly. My dealer was arguing with me over it. I was looking right at the sensors and he told me they don’t have it.
That situation got me watching this video. Good info.
Thanks.
Speed sensors can only be deleted if the pumps have swash plate sensors in them. Not all machines can be updated to delete speed sensors.
@@tetradgroup good to know. Mine does. Bobcat went off the serial number. I was shocked at the quality of customer service. A human answered after two rings. No computer answering machine even.
Continue like this, and you will be the online source for bobcat repair! You are so good at explaining in detail in plain and simple language. You make it so easy. Appreciate it!
Thank you very much!
Buying a new aftermarket motor is easy online, but I did view this video to disassemble my leaking drive motor.
Thanks for sharing. I own a T300 with 900 hours and no problems yet!
although I don't speak English, everything is clear and informative. thanks.
I wish you were my neighbour LOL. I know where I'd be bringing my Bobcats for service. Really enjoy your videos. I've learned a ton and the sound and visual quality is excellent. Thank you so much for sharing.
Always wondered how all that worked, makes perfect sense now.
Thank you, very helpful
I have. 300 short motor , the final is blowing the speedometer seal. There were a few brass shards in case drain. Which seal/gasket if broken would allow those metal shards to pass through the rest of the hydraulic system. The dealer told me to sell the machine and buy a new one
Best Channel going for Bobcat info , much appreciated .
Great info. Looks like an involved process, and you're the right one for the job!
Great job! Very knowledgeable, had no idea how everything worked in drive motor. Thanks for the time!
Excellent info and video! Thank you!
Great video and information! Thank you!
Great job! Nice Bobcat- channel, greetings from Finland!
Thanks so much .
Does the new brake set have a disc material on the disc, or is it metal on metal? Awesome detailed video.
Thanks for the simple man's explanation. Would not have attempted to take one apart before this video as my t300 has some excessive whining on left side only and I suspect failing seals. Hopefully im on the right track. Thanks for sharing
Iv got a 06 t300 sjc controls and my right side motor is whining also…. Looking for answers
Thanks for the video..
Is the disk made of steel? I have a forklift (hydrostatic) and the brakes are blocked , can you give me any ideas as why this happens? My one is rexroth Bosch like the one in the video
Awesome video. It was the only reason I was to be able to take apart and understand my motor better. I’m going to level with you here. I’m a carpenter but starting building my house a few years back. I own my own bobcat 864, which I’m sure you know has the same drive motor. On my machine I have one long nose and one short. My short nose started leaking very minimal behind the hub. In order for me to own this machine and keep it for my property and for small cash jobs. I have to do everything myself as I can’t afford to pay anyone to do these expensive things. The good thing is I can sit on things because it’s not a machine for a business, so am learning as I go. But as you know this video took me all the way to the hub section, as you issues were before the face seals, so you didn’t have to go any farther. Any info that can help me get to my face seals would seriously help me more then you know. I am sitting here staring at the top of my bearing, trying to figure out how to get the rest out to get to my seals. All of my parts have looked really good up to this point. So I have a really good outdated short nose that I’m trying to keep alive. Plz help. I’ve been talking with Texas Final Drive with their main tech Shane, but he’s always so busy it’s hard to talk to him. I know the bearing has to be pressed in with a press, but how does it come out. Thank you.
Jason (262)888-2080
I know this is old but for others. There is two C shaped retaining rings you knock out of their slott and remove the preload washer. Then sit the upper housing ears on blocks and press in the center of the spindle. The housings will press apart then.
I figured out my question to the hub bearing section to get to the face seals. I have to press the sections apart
That's correct, the shaft will need to be pressed out of the bearing.
I have a t300 I changed
Out the sprockets and notice I have a short nose and long nose sproctet is that normal
My model 864 Drive motor sprung a face seal leak. How many O-rings and gaskets do I need to change to fix my problem?
Would it be be possible to monitor the motor brake section with an IR temp gun to see if one has suspected brake issue? If that seal is leaking and the brakes are dragging, than the suspected motor should be hotter than the other one?
In theory, yes that should one way to see if the brake is dragging. I have not tried it however.
Is there a followup video? Did you rebuild it or get a reman one?
Is there a part 2 on this?
Were can get the rebuild kit
If maintaining correctly and not abused what is the life span of a hydraulic drive motor on a T650 2010 model bobcat
Ty for your videos
S'il te plaît, met le sous-titre en français 😊
On my T300, my hub is leaking oil but making no noise and drive function seems normal. Can i squirt some low vis grease in there since its only lubricating a large bearing and no needle bearings rather than tearing down for a rebuild or buying a reman unit? Hate to spend all that $$$ if some grease will work in that hub area.
Not sure how well it will work but worth a shot to get more time out of it.
Thanks for all the good info. (Question) I have the same machine 2003-4 T300, a while back it started acting up, it drives forward , reverse and skids left but will not skid to the right. all hydraulics worked normal bucket up, down, tilt. So I had a mechanic the best in the business take a look at it and he diagnosed the right hyd. auxiliary pump been bad so I had him replace it. after he installed the new pump and changed all hydraulic fluid. The machine did not move forward, reverse or turn left. so when he said he was eliminating possibilities and it might be the MAIN PUMP. I asked him to leave.
1) What was the symptom of your machine?
2) Can you advise if my b-cat may have the same problem ( a bad drive motor)
3) Can you recommend a reliable Bobcat re-man source for drive motors, parts in general.
Thanks again for your unconditional help. looking forward to your next video.
Sorry he replaced the gear pump as it has nothing to do with the drive. I suspect you have the same issue as I described in the video, leaking piston on brake section of motor which can be fixed if you don't want to replace. I prefer to use Bobcat reman motors, I've always had good luck. I've bought reman motors from other well know builders and was not impressed with the quality.
@@tetradgroup Thank you
Yeah, nice work that Milwaukee impact wrench to me just looks too bulky and awkward
Yeah but your neighbors are far less likely to complain about noise. I went full electric at home more than ten years ago for that reason. Can’t blame them either. Who wants to relax in their yard and listen to a loud air impact running.
You mentioned that you replace the rings in the rotating group. Where do you get the replacement rings for the pistons that are in the rotating group of rollers? I cannot even get that part to show up on bobcat’s site. And I’m not going to buy all new pistons. My seals for those pistons are cracked and broken.
The seals for the pistons themselves are not sold separately unfortunately you will have to replace the whole piston.
Hello I been watching your videos working on bobcats I have a t300 and the hydrostatic motor won’t build pressure I took it to bobcat they told me that I have a hydraulic failure and it’s not worth fixing it’s this possible? Thanks in advance
I would think any hydraulic failure is worth fixing on a T300
What if you were to just remove the brake disks and run it without? The motor will work, but the machine would just roll when you're off the levers as an older wheeled machine would?
Have an issue on my T300 Track Loader. Attached a bucket grapple, plugged in the hydraulic lines and started machine. Selected hydraulics for attachment and tested. One hose was not locked on and blew off. Went to reattached hose and now no function lights on the left panel hydraulic selections. Sent panel to ISOSCEL but panel is fine. Not sure where to go next, Fuse?
Depending on serial number it may have a separate auxiliary controller and fuse
S/N 532011591 Thank You
Great video I have a t595 2019 recently had the plug fell out and hadn't noticed until machine started to turn pourly,I got off machine and then noticed the plug was out and it was smoking I immediately put machine on trailer and took to dealership.i am really hoping it does not have any internal damage from being run without the fluid for I don't know how long? In your experience would this breaked turning I experienced be possible from just being low on fluid or more likely I have some some internal damage? I have no idea when plug came out and would think I would have noticed since I clean the tracks pretty religiously but am desperately hoping I haven't done any major damage
Which style motor do you have? If it was smoking I'm sure some damage has been done. Most dealers rather replace than rebuild. Let me know what they say. I have some motors rebuilt and ready to go if you need one.
They had to order the plug which they'll have tommorow and they were going to fill it back up and put plug in. What part of the county are you in?
@@lukejohnson8110 I'm in Salt Lake, if your motor has the plugs on the outer housing that would be for the brake oil, if the brake pack is damaged it will be cheaper to replace the motor than to rebuild it. The brake pack and seal kit will be around $1700, add labor and the reman would be a better option. Hopefully not to much damaged occured but if the brakes were smoking I will be surprised if the brake pack is not damaged.
Thankyou for your advice brother I have been riding skid steers for 14 years now but the past five years has been my first personal machine and it's a whole different animal. I really appreciate your time and input definitely learned a lot here thankyou
Where do you recommend ordering a new or reman drive motor for a T190. I believe my face seal on the outside is leaking and I’m not sure if it’s worth the trouble of tearing the whole thing down if I can buy another drive for half the cost of a seal kit.
Correction… If the seal kit is almost 1000 bucks might as well just buy a reman drive
Check with Bobcat first and then Texas Final Drive if Bobcat does not have one. Good luck!
On my s750 I filled the chain case oil and it ran out into the pan on the left side. Is there a seal between the drive motor and chain case?
Yes there are lip seals between the inner and outer carrier bearings but still that's unusual to leak in that direction. Can you see the oil leaking between the drive motor and case? Hopefully the case itself is not cracked. Usually when those seals go bad hydraulic oil will pump into the chain case from the drive motor. Carrier seals is a big job and the seals have been updated depending on your serial number.
Подскажите пожалуйста сколько должно быть тормозные диски на эту гидромотор бобкат т300
Hello. I just bought a T300 at an auction. never had skid steer before. everything works fine, but periodically on the left side a loud knock, it looks like from the drive motor. what could it be??? Thanks. Alex.
Not sure but I would make sure the track is not slipping on the sprocket, that will make a loud pop.
I smashed my case drain line on a cat 259 n now my final drive pump is leaking hydraulic oil? Would you have any idea what seal went out?
Face seal at hub blew out, also known as duo cone seal, if your referring to the final drive motor
I take it that these drives are not the same as a small excavator final drive at least the internals ?
Off subject , if your son married my grand daughter would that ok to give you a call now and then just to bs … fishing , final drives , the weather .
That kinda stuff that those cheap family members do with out shame
Great video and if the wedding thing doesn’t work out at least you got a new subscriber providing you don’t use a application process algorithm…? 😳
Where would I buy a rebuild kit for a long nose final drive for bobcat t250.
Check loader parts source or texas final drives
Why would t300 with long nose motors start whining and you let go of the controls it will start to roll on a hill
Sjc controls also…
Thank you sir
Where can I order internal parts for these motors? I have one that is weaker than the other and I assume the brake clutches are partially engaged. I’d like to rebuild the motor myself.
Bobcat of course and check bobcatpartsonline.com for the diagrams. Most hydraulic shops can also get all the parts for the Rexroth motors but they will need the Rexroth part number from the tag attached to the motor, if it's still there.
Where are you located?
Part 2 ?
Is the t and the A300 have the same motor?
As far as drive motors, no, they are different motors.
If I send you some pictures of my shaft and hub section, can you tell me what you think?
Sure my email is in the about section
How do you remove the brake piston on a 4 port drive
Remove back plate and use compressed air into the brake port to blow piston out.
@@tetradgroup thank you do you have any reassembly vid specific to the brake pack
Another great video..any idea what the tap size is for the 3 bolt holes on sprocket? Can the drive motors be mismatched and machine still function correctly? Meaning, can a long shaft replacement on one side be used if the opposite side remains original short shaft?
Sprocket is 1/2 x 13. Yes you can have mismatch motors, no problem at all.
@@tetradgroup great, thanks.