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brdgbldr
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What machine do you have?
743 Bobcat
brdgbldr
Well-known member
- Joined
- Jun 1, 2012
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Lots of 743 owners on here.
You can search the forums for info from past questions as well as asking members.
I tried to make a post with pictures in the bobcat general forum but it hasn't been approved yet. Mine keeps knocking out the u joints and I can't find a reason for it. Replaced yoke, cardavan joints and flywheel adapter ring last time. Only lasted 3 months this time.
have a 743 bobcat. The entire unit has been rebuilt. I bought it from a guy literally in boxes. Most items were rebuilt ( engine/ pump/ drive.
I reassembled everything with factory manuals which came with unit.
I went ahead and rebuilt or replaced nearly everything else.
The u joint cardavan joint has broken 3 times now. Last time, I replaced splined yoke adapter, entire joint and adapter plate that mounts on flywheel. Lasted about 3 months and very little use this time. I have enclosed photos. Each time it appears the joint is binding on the flywheel adapter plate and the yoke coupling . I am at a loss and tired of tearing this thing down regularly. It also appears the yoke it not entirely buried on the pump splines by the wear pattern. If it is not buried deep enough, I would see where I could get out of round swing in U joint, causing caps to crash into mounts and break. Is there a spacer or something missing that extends the yoke farther onto the pump splines? Engine and pump line up with mounting holes easily and hardware drops right in.
I am hoping with all the knowledge here maybe I could get some help
I reassembled everything with factory manuals which came with unit.
I went ahead and rebuilt or replaced nearly everything else.
The u joint cardavan joint has broken 3 times now. Last time, I replaced splined yoke adapter, entire joint and adapter plate that mounts on flywheel. Lasted about 3 months and very little use this time. I have enclosed photos. Each time it appears the joint is binding on the flywheel adapter plate and the yoke coupling . I am at a loss and tired of tearing this thing down regularly. It also appears the yoke it not entirely buried on the pump splines by the wear pattern. If it is not buried deep enough, I would see where I could get out of round swing in U joint, causing caps to crash into mounts and break. Is there a spacer or something missing that extends the yoke farther onto the pump splines? Engine and pump line up with mounting holes easily and hardware drops right in.
I am hoping with all the knowledge here maybe I could get some help
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brdgbldr
Well-known member
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- Jun 1, 2012
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Here is a link to the parts catalog:
partscatalog.bobcat.com
The schematics can sometimes be helpful. Maybe you are missing a part or are not getting the engine and pump lined up correctly.
I have also heard of bolt heads being too big and causing binding even though they came with the u-joint.
Bobcat Parts Catalog - Find Diagrams for Your Equipment - Bobcat Company
Locate all parts and component information about your Bobcat equipment with detailed visual diagrams and illustrations with parts numbers and add to your list.
The schematics can sometimes be helpful. Maybe you are missing a part or are not getting the engine and pump lined up correctly.
I have also heard of bolt heads being too big and causing binding even though they came with the u-joint.
