Search found 6 matches

by PlugNickel
Fri Aug 13, 2010 7:17 pm
Forum: Late model JD crawler technical support
Topic: 450C Backhoe hydraulics
Replies: 15
Views: 19675

Thanks everyone, I just got all the hoses, fittings, and pressure relief valve today and got it all hooked up. I ended up breaking the high pressure line from the pump (under the seat) and running it to a pressure relief that I also mounted under the seat. The other end of the relief valve I ran to ...
by PlugNickel
Sun Aug 08, 2010 2:52 pm
Forum: Late model JD crawler technical support
Topic: 450C Backhoe hydraulics
Replies: 15
Views: 19675

Thanks Ken, Yes, I’ll get a service manual and a parts book for it, though to this end all I think I need to know is whether it’s normally open or closed to return, max hydraulic pressure, as well as it don’t have its own relief valve. The scrap tractor I got the rear mount off of does have all the ...
by PlugNickel
Sun Aug 08, 2010 2:06 pm
Forum: Late model JD crawler technical support
Topic: 450C Backhoe hydraulics
Replies: 15
Views: 19675

Hello Jason, That’s pretty much what’s been rattling around in my head concerning the relief valve under the seat; I was just on Ebay looking at them. Yes, having to switch between the hoe and blade constantly when all you want to do is reach back to pick up the blade or perhaps lift the front of th...
by PlugNickel
Sun Aug 08, 2010 9:34 am
Forum: Late model JD crawler technical support
Topic: 450C Backhoe hydraulics
Replies: 15
Views: 19675

Yes, the 93A is open center (it came off of a 450C that was scrapped) and I expect that it will be about half the speed with the pump that is one the machine though without trying it, I can't say if it will be too slow or not. I think I just ran into a problem though.... Just looked at the hoe valve...
by PlugNickel
Sat Aug 07, 2010 4:38 pm
Forum: Late model JD crawler technical support
Topic: 450C Backhoe hydraulics
Replies: 15
Views: 19675

Thanks Willyr, That's my thought as well...'don't know why they use a diverter valve... Any thoughts on just breaking into the main line from the pump and looping it to the rear to feed the hoe? Can you think of any problems that this might cause? Just trying to bounce this off of folks before cutti...
by PlugNickel
Sat Aug 07, 2010 3:59 pm
Forum: Late model JD crawler technical support
Topic: 450C Backhoe hydraulics
Replies: 15
Views: 19675

450C Backhoe hydraulics

Hello, I have recently got a wild hair to put an old JD 93A hoe on my 450C dozer. After finding and installing a rear mounting bracket and modifying the rear post mounts on the ROP, I started to look at the hydraulic hookup requirements... I was surprised to see that Deere used a diverter valve for ...