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Bobcat  > Excavators  > 331d swing motor leaking  
 
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 Author Thread: 331d swing motor leaking
RussB is not online. Last active: 8/25/2014 6:53:27 PM RussB
Joined: 29 Dec 2010
Total Posts: 10
 
331d swing motor leaking
Posted: 05/30/2011 06:52 PM
I guess when it rains it pours...... 2 weeks ago I had to remove the radiator and have it flushed out because it was running hot on me. Now last week I noticed hydraulic oil leaking out below the turn table between the tracks. I brought it home this weekend and tore it apart looking for a reason why. It turned out the swing motor is leaking oil right above the gear ( the best I can tell )..... What is a normal fix fort this? Is it possible to replace the seal, or does the whole swing motor need replacing, or rebuilding? In the 7 years I've owned this, I've never had a single problem and now it seems to be piling up on me... RussB
Tazza is not online. Last active: 12/17/2014 1:41:22 PM Tazza
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Joined: 08 Dec 2004
Total Posts: 11913
 
Re: 331d swing motor leaking
Posted: 05/30/2011 08:19 PM
It should just be a seal. Dirt probably got caled in there and has made it leak. Even age/heat will make it harden up and fail.

Bobcat 763 burntSadbut i'm working on it!, 04 S150 with air and a smooshed cab, S250 turbo.
RussB is not online. Last active: 8/25/2014 6:53:27 PM RussB
Joined: 29 Dec 2010
Total Posts: 10
 
Re: 331d swing motor leaking
Posted: 06/01/2011 06:35 PM
I decided to take the lazy way out on this one..... letting the bobcat mechanic fix it next Monday, don't think I got the patience to tackle this one....
Bobcatdan is not online. Last active: 12/7/2014 5:17:49 PM Bobcatdan
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Joined: 03 May 2012
Total Posts: 890
 
Re: 331d swing motor leaking
Posted: 05/03/2012 06:33 PM
Overall do not have to much with the mini ex. Swing carrier is the one somewhat kinda common thing. Normally do seals and bearings in the motor carrier. I do maybe four a year.

Bobcat certified mechanic
7LBSSMALLIE is not online. Last active: 12/18/2014 7:29:32 PM 7LBSSMALLIE
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Joined: 02 Feb 2012
Total Posts: 696
 
Re: 331d swing motor leaking
Posted: 05/07/2012 06:02 PM
more than likley it is the carrier seal but motor will be resealed as well you dont do one without the other, it is a very time counsming job,.ring gear bolts need inspected, a sloppy house side loads gear. carrier brgs are replacable. have not found a speedy for shaft. but i can say i have never done the same unit twice,
Monirul is not online. Last active: 5/9/2012 1:32:58 PM Monirul
Joined: 30 Mar 2012
Total Posts: 2
 
Re: 331d swing motor leaking
Posted: 05/09/2012 01:32 PM
Ergonomic design-extra large push buttons for raise, lower and born functions are easily accessible. Heavy duty motor, gear pump, relief valve. High visibility is specially designed on mast with laterally mounted lifting cylinder. Dual forward/reverse grip controls for thumb operation.
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