JDcrawlers Messageboard

When I first put the coupling on the power shaft and then attempted to mount the pump, the pump shaft did not fit into the coupling correctly and when I tightened the mounting bolts to the pump, the power shaft moved back toward the engine. The rear slip ring moved out of its groove allowing the pow...

Finally got the new coupling, put it on, and still hydraulics not working. Best I can tell the power shaft has moved back some and the coupling just is not connecting to the pump shaft. Will go back to work on it next week. Will try to see if the shaft has moved; if it has will pull it forward. May ...

Don't know anything about the frequency of failure but the coupling is the designed wear point....it should go first to protect the pump....or so I have been told....

If it is the coupling, I was able to get an aftermarket one from Reliable Aftermarket Parts for around $45 with shipping included...about $10 less than other places I checked....

My friend used my 3 lb sledge hammer to tap on both sides of the pump....once saw the pump break the bond to the mounting plate, was able to get the screw driver in.....it did take a while to get the pump to move though....

If you can, look at john deere's catalog (jdpc.deere.com), enter your model number and then search for the hydraulic pump. it will show you how the pump is mounted. I just pulled the hydraulic pump on my 455E yesterday. After removing the two mounting bolts, had to "tap" the pump with a hammer and t...

Got the pump off today. Used a thin walled 3/4 inch socket...the splined coupling between the drive shaft and the pump shaft was worn out on the pump side....ordered a replacement....huge relief since about $600 difference in costs...

The learning/frustration never seems to cease....went to unbolt the hydraulic pump only to find could not fit a wrench or socket over the bolt; the head is too close to the pump body. Will need to modify a wrench or a socket (grind it down on one side)....be next week before I can do that....

Thanks Seal....I am borrowing a chain hoist today to lift the bucket..hopefully can make some progress with troubleshooting....

Ok....after the frustration of the hydraulics failing yesterday, I removed the grill and pressure washed around the hydraulic pump and the drive components for the pump. I started the loader and looked to make sure the drive components were turning and they all were....sort of expected that....I can...

Over the past 3 or 4 operating days, when I started the machine the hydraulic filter restriction light would come on (we have had cool nights and I figured oil is cold)....at low idle it would go out and as the engine warmed up, I could increase rpm without the light coming on....I replaced the filt...

Finally, put on the new track adjuster today....it was not an easy task, and quite honestly, I could not have come close to doing it by myself....my friend Steve carried the day, and even he needed some help/advice from his cousin Charles (who spent his adult life running dozers and loaders).... Pro...

My local friend came over today and we decided to replace the entire tension adjuster (yoke and piston rod). Ordered an aftermarket item for about $500...

If anyone has any lessons learned on this repair would appreciate your input...

Noticed significant right track sag....could not get track to adjust...thought maybe seals were bad....today used a chain from the bucket to pull track tight and watched as yoke went forward...noticed rod went with it and that rod was not properly aligned....and then rod came out of spring cover hou...

Hi, One sure fire way to dewater clay is to drive track pads back and forth across it. Squeezes the water from below to the top, makes clay soup, then clogs up the pads so they just slip. Then, more water pushes up, makes more soup, and the machine slowly sinks. We had a guy that had four crawler l...