hydraulic pump disconnect

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papyrus
420 crawler
420 crawler
Posts: 26
Joined: Sun Jan 22, 2017 8:59 am
Location: Schaffhausen,switzerland

hydraulic pump disconnect

Post by papyrus » Thu Feb 02, 2017 6:23 am

hi everybody
the disconnect mecanism for the hydraulic pump of my 450b loader is completly seized.
Now.... has the lever to be pulled out to be moved or is there snap ball ?
and would some heat on the cupling help ?
thanks

Scottyb
2010 crawler
2010 crawler
Posts: 565
Joined: Sun Sep 25, 2011 7:54 am
Location: Saskatchewan Canada

Post by Scottyb » Fri Feb 03, 2017 6:23 am

It h as been 6 years since I had the same problem. I ended up pulling the rad and hyd pump so I could get some anti seize on it and work it loose. no grease nipple from factory, now i keep testing it a couple times a year.
Scott
450`s c-dozer 6 way, b-loader.
350`s c-loader + ripper, b-loader with winch arch. B-loader with dozer pads
backhoe attachment.
1010 loader with forks for round bales
a few 610 Bobcats. many attachments

User avatar
papyrus
420 crawler
420 crawler
Posts: 26
Joined: Sun Jan 22, 2017 8:59 am
Location: Schaffhausen,switzerland

Post by papyrus » Sat Feb 04, 2017 2:56 am

Thanks
looks like the way i have to do it...
maybe i even have to take the Engine off.
the main Clutch acts strange and there are two broken Bolts on the left side of the Bellhousing.

Jim S.
420 crawler
420 crawler
Posts: 28
Joined: Thu Jan 01, 2009 8:41 pm

Post by Jim S. » Sat Feb 04, 2017 6:15 pm

Hi,
I had the same disconnect problem. Discovered it when I had the engine out. Could not free the fork shaft with out fear of bending. Applied lots of heat to casting with oxy-acet torch and got it to move. Worked it a bit and got full movement. Drilled and tapped for grease zerk.

Jim

Jim S.
420 crawler
420 crawler
Posts: 28
Joined: Thu Jan 01, 2009 8:41 pm

Post by Jim S. » Sat Feb 04, 2017 6:33 pm

I also found the two large special grade 8 bolts which attach the frame channel to the left side of the bell housing were broken. Since the counter bore in the bell housing and the frame channel bracket were wallowed out, Im having to make new bolts oversize and reaming both bores to fit. These are dowel like in function and have to be fully torqued to prevent movement and loosening.

I also found the rear flange of the channel where it mounts to the forward face of the transmission was broken at the weld. Makes for quite an unpleasant project. All damage occurred during previous ownership so I dont know the cause. See post with photos nearby.

Jim

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