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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
753 drive motor leak(s). Newby...
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<blockquote data-quote="Graham" data-source="post: 3171" data-attributes="member: 319"><p>Okay it is fixed and here is what I found out. I jacked up the rear a few inches and removed both rear wheels. Removed both side covers. marked the top pressure hose so as not to put them back on the wrong fittings. Removed all 3 hoses on each motor. Removed the 4 retaining bolts and slid out both motors. On the left side the seal on the carrier shaft looked just fine but I replaced it with the newer design. To do this I removed the seal and retainer with a screw-in seal puller. The seal looks like one piece but the seal is a seperate part. I used the old retainer part to press the new seal unit into place. The newer design is one piece. Need to be careful not to damage the seal as it is a very tight fit. On the right side I found the seal had fallen out of the retainer and was not even on the shaft. After re-installing the motors I ran the machine to pump out all the old oil, then re-filled with new oil. Then re-installed the 6 hoses to the motors with new o-rings. It appeared to have no leaks so I drove it around for 40 minutes the hydraulic oil level had not changed (allowing for heat expansion). That's it, not rocket science. If any of this is unclear let me know. Thanks for all your input. My 753 appears to be a healthy unit. Sigh of relief. Graham.</p></blockquote><p></p>
[QUOTE="Graham, post: 3171, member: 319"] Okay it is fixed and here is what I found out. I jacked up the rear a few inches and removed both rear wheels. Removed both side covers. marked the top pressure hose so as not to put them back on the wrong fittings. Removed all 3 hoses on each motor. Removed the 4 retaining bolts and slid out both motors. On the left side the seal on the carrier shaft looked just fine but I replaced it with the newer design. To do this I removed the seal and retainer with a screw-in seal puller. The seal looks like one piece but the seal is a seperate part. I used the old retainer part to press the new seal unit into place. The newer design is one piece. Need to be careful not to damage the seal as it is a very tight fit. On the right side I found the seal had fallen out of the retainer and was not even on the shaft. After re-installing the motors I ran the machine to pump out all the old oil, then re-filled with new oil. Then re-installed the 6 hoses to the motors with new o-rings. It appeared to have no leaks so I drove it around for 40 minutes the hydraulic oil level had not changed (allowing for heat expansion). That's it, not rocket science. If any of this is unclear let me know. Thanks for all your input. My 753 appears to be a healthy unit. Sigh of relief. Graham. [/QUOTE]
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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
753 drive motor leak(s). Newby...
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