Posted by Jme houston TX on May 03, 2011 at 19:13:16 from (70.139.152.40):
I just rebuilt my cav injuctor pump. would like to share some info to anyone who whats to give it a try. First buy the complete kit on-line with all the rebuild parts. There is a plastic screen in the pump inlet that no one talks about, and mine was completely plugged. my tractor was loosing power and would not power up I suspect it was the plugged screen not letting the pump get enough fuel. I did not change or adjust any of the parts inside only changed orings and seals. all of the seals were easy enough to change except for one. The body and the head unit oring, it is trapped between them. So not knowing how to get it out I did not replace it and guess what it was the only place leaking after I installed pump back in the tractor. To replace this oring you need to pull off the top cover, and carefully remove the spring that is in the cover and rember which holes they go in, and make sure the fuel cut-off slider stays in place Remove the inlet pipe take out the pump vanes and parts. Then remove the three bolts that hold the head unit in place. the back bolt, the bleed screw bolt and the bottom bolt. then gently turn the head unit and remove the arm in the top cover that is held in the head unit. the head unit will now slide out, so you can clean the parts and replace the oring. this took me 6 hours to figure this out hope this helps the next guy. Cav has a good rebuild instructions but does not have very good pictures. some tractor parts sellers sell all the parts indivdually and they have a good parts picture. good luck rebuild will save you $650.00
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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