Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
743 rattle whine trouble shoot help requested
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support SkidSteer Forum:
Message
<blockquote data-quote="DeesLLfitER dave743" data-source="post: 37504" data-attributes="member: 4330"><p>OK The Final Update( good news ) WHat an experience, almost ruined another seal ,I used the snap ring as a backer after getting the seal square and just below the surface, during tapping the snap ring in pushing the seal the seal started to cock again!!! ( sort of like rolling pennies , they would rather go in sideways, the seal flange is designed way too thin for that application with no bottoming lip! Anyway after final setting the snapring, the seal was cocked about .040inch off the back of the snap ring on one side, I choose to run IT ! so far it runs great and no more herky jerky, I believe now the jerky travel came from the spline was so stipped out that any abrubt load change the engine would free wheel around the pump spline and the pump would instantly stall, like slamming on the brakes, come to think of it the herky jerky vehicle travel would happen in situations where I had good traction and under sudden load( meaning pot hole etc). When installing the engine, I painted the ujoint coupling orange so I could see it later thru a long skinny mirror and flashlite. I used a long string (no knots) looped once around the flopping end of the coupling so I could pull it like a puppet to line up the brand new splines but slip it out easily later. The engine slipped in in 4 minutes ! When I looked at the coupling it appeared the engine(Kubota) was 1/2 to 1 inch higher then the pump shaft, and the ujoint appeared bottomed to an extreme angle(not good! )(the old pump had wittness marks as it was slightly bottomed also but appeared it was in there a long time)(probaby why the splines wore out). I checked the pump rear end hanging bracket and it looked good and very difficult to get to to shim. My sollution was to shim the rear most part of the engine with a 1/8 thick washer, but not enough to shuv the coupling against the pump face,important. This put clearance in the ujoint of about 3/16 at its worst location, The machine runs smooth now and much quieter!!!! THANKS AGAIN ! until the next story of mine or someones dave</p></blockquote><p></p>
[QUOTE="DeesLLfitER dave743, post: 37504, member: 4330"] OK The Final Update( good news ) WHat an experience, almost ruined another seal ,I used the snap ring as a backer after getting the seal square and just below the surface, during tapping the snap ring in pushing the seal the seal started to cock again!!! ( sort of like rolling pennies , they would rather go in sideways, the seal flange is designed way too thin for that application with no bottoming lip! Anyway after final setting the snapring, the seal was cocked about .040inch off the back of the snap ring on one side, I choose to run IT ! so far it runs great and no more herky jerky, I believe now the jerky travel came from the spline was so stipped out that any abrubt load change the engine would free wheel around the pump spline and the pump would instantly stall, like slamming on the brakes, come to think of it the herky jerky vehicle travel would happen in situations where I had good traction and under sudden load( meaning pot hole etc). When installing the engine, I painted the ujoint coupling orange so I could see it later thru a long skinny mirror and flashlite. I used a long string (no knots) looped once around the flopping end of the coupling so I could pull it like a puppet to line up the brand new splines but slip it out easily later. The engine slipped in in 4 minutes ! When I looked at the coupling it appeared the engine(Kubota) was 1/2 to 1 inch higher then the pump shaft, and the ujoint appeared bottomed to an extreme angle(not good! )(the old pump had wittness marks as it was slightly bottomed also but appeared it was in there a long time)(probaby why the splines wore out). I checked the pump rear end hanging bracket and it looked good and very difficult to get to to shim. My sollution was to shim the rear most part of the engine with a 1/8 thick washer, but not enough to shuv the coupling against the pump face,important. This put clearance in the ujoint of about 3/16 at its worst location, The machine runs smooth now and much quieter!!!! THANKS AGAIN ! until the next story of mine or someones dave [/QUOTE]
Verification
Post reply
Forums
Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
743 rattle whine trouble shoot help requested
Top