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General Bobcat Skidsteer Forum
SERIOUS PROBLEM: Bobcat 843
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<blockquote data-quote="HanSolo" data-source="post: 64968" data-attributes="member: 7905"><p>Alrighty. I got the hydrostatic pump out yesterday. Not too much drama. Hardest part was getting to the 15/16" bolt on the underside of the pump. I had to cut a wrench in half to get 1/8 turns. First I removed the large mounting bracket at the back of the pump which gives you great access to hoses. That also gives you the ability to jack the rear of the pump up.</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_135713_zpse7835b81.jpg?t=1365424901" alt=" photo 20130407_135713_zpse7835b81.jpg" class="fr-fic fr-dii fr-draggable " style="width: 754px; height: 565px" /></p><p>Next I removed the servo assembly on the left side for access to the two large hoses on that side. You disconnect the three linkage points and two small hoses. All the adjustments should still be good.</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_141410_zpsb2a79a7c.jpg?t=1365424890" alt=" photo 20130407_141410_zpsb2a79a7c.jpg" class="fr-fic fr-dii fr-draggable " style="width: 754px; height: 565px" /></p><p>The two large hoses have elbow fittings that can be removed after pulling the pump.</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_142334_zpsb1923dcd.jpg?t=1365424883" alt=" photo 20130407_142334_zpsb1923dcd.jpg" class="fr-fic fr-dii fr-draggable " style="width: 754px; height: 565px" /></p><p>There's a T fitting on the other side that can be a little tricky getting lose because of large hoses going to the front hydraulic pumps. Note that 15/16" and 1" stubby wrenches are really needed for this job. Some hose connections quite tight and requiring a cheater pipe.</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_143705_zpse838a787.jpg?t=1365424875" alt=" photo 20130407_143705_zpse838a787.jpg" class="fr-fic fr-dii fr-draggable " style="width: 506px; height: 675px" /></p><p>To get to that lower attaching bolt I first used a pry bar to lift the pump but then came up with this come-along rig. That worked quite nicely and left the underside clear for loosening. Your basically just feeling your way around the front of the pump. Prepare to put your face right in there unless you have really long arms!</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_150851_zpsb3bfb217.jpg?t=1365424867" alt=" photo 20130407_150851_zpsb3bfb217.jpg" class="fr-fic fr-dii fr-draggable " style="width: 506px; height: 675px" /></p><p>Here's what you see when the hydrostatic pump is out. That's the rear of the hydraulic pumps. They're splinded together with an internal coupler. There's a large sealing o-ring. You see I've already sealed and covered loose hose ends with this machine sitting outdoors. After the photo was taken, I covered the exposed area with a shop towel, plastic sheet and e-taped tight.</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_160410_zpse6cfea6a.jpg?t=1365424856" alt=" photo 20130407_160410_zpse6cfea6a.jpg" class="fr-fic fr-dii fr-draggable " style="width: 754px; height: 565px" /></p><p>Here's the hydrostatic pump on my tailgate. The linkage bracket was removed along with the large elbows (those have o-rings also). I couldn't get the extension pipe off so it's going with the pump to the re-builder. I doubled wrapped and taped the pump for shipping. That won't be cheap. That sucker is HEAVY!</p><p><img src="http://i1336.photobucket.com/albums/o644/trscca12re/20130407_170251_zps7dfc687c.jpg?t=1365424847" alt=" photo 20130407_170251_zps7dfc687c.jpg" class="fr-fic fr-dii fr-draggable " style="width: 506px; height: 675px" /></p></blockquote><p></p>
[QUOTE="HanSolo, post: 64968, member: 7905"] Alrighty. I got the hydrostatic pump out yesterday. Not too much drama. Hardest part was getting to the 15/16” bolt on the underside of the pump. I had to cut a wrench in half to get 1/8 turns. First I removed the large mounting bracket at the back of the pump which gives you great access to hoses. That also gives you the ability to jack the rear of the pump up. [IMG width="754px" height="565px" alt=" photo 20130407_135713_zpse7835b81.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_135713_zpse7835b81.jpg?t=1365424901[/IMG] Next I removed the servo assembly on the left side for access to the two large hoses on that side. You disconnect the three linkage points and two small hoses. All the adjustments should still be good. [IMG width="754px" height="565px" alt=" photo 20130407_141410_zpsb2a79a7c.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_141410_zpsb2a79a7c.jpg?t=1365424890[/IMG] The two large hoses have elbow fittings that can be removed after pulling the pump. [IMG width="754px" height="565px" alt=" photo 20130407_142334_zpsb1923dcd.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_142334_zpsb1923dcd.jpg?t=1365424883[/IMG] There's a T fitting on the other side that can be a little tricky getting lose because of large hoses going to the front hydraulic pumps. Note that 15/16“ and 1“ stubby wrenches are really needed for this job. Some hose connections quite tight and requiring a cheater pipe. [IMG width="506px" height="675px" alt=" photo 20130407_143705_zpse838a787.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_143705_zpse838a787.jpg?t=1365424875[/IMG] To get to that lower attaching bolt I first used a pry bar to lift the pump but then came up with this come-along rig. That worked quite nicely and left the underside clear for loosening. Your basically just feeling your way around the front of the pump. Prepare to put your face right in there unless you have really long arms! [IMG width="506px" height="675px" alt=" photo 20130407_150851_zpsb3bfb217.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_150851_zpsb3bfb217.jpg?t=1365424867[/IMG] Here's what you see when the hydrostatic pump is out. That's the rear of the hydraulic pumps. They're splinded together with an internal coupler. There's a large sealing o-ring. You see I've already sealed and covered loose hose ends with this machine sitting outdoors. After the photo was taken, I covered the exposed area with a shop towel, plastic sheet and e-taped tight. [IMG width="754px" height="565px" alt=" photo 20130407_160410_zpse6cfea6a.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_160410_zpse6cfea6a.jpg?t=1365424856[/IMG] Here's the hydrostatic pump on my tailgate. The linkage bracket was removed along with the large elbows (those have o-rings also). I couldn't get the extension pipe off so it's going with the pump to the re-builder. I doubled wrapped and taped the pump for shipping. That won't be cheap. That sucker is HEAVY! [IMG width="506px" height="675px" alt=" photo 20130407_170251_zps7dfc687c.jpg"]http://i1336.photobucket.com/albums/o644/trscca12re/20130407_170251_zps7dfc687c.jpg?t=1365424847[/IMG] [/QUOTE]
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SERIOUS PROBLEM: Bobcat 843
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