I would like to know the gpm flow of the hyd pump on my 1957 420.Going to make it power angle and I'm going to up grade orginal hyd valve to a new 2 spool valve.Lavoy, you propably know the answer to my question.Thanks
Cooter
420 hyd info
- 1954cooter
- 430 crawler
- Posts: 52
- Joined: Sat Oct 27, 2012 6:11 pm
- Location: New Brunswick, Canada
Re: 420 hyd info
The Service manual states 900-950 psi at 9 gpm. I purchased a standard high pressure directional control valve and plumbed a inline poppet pressure relieve valve before the valve body. Baileynet.com part number 222-785. I did all of this when I made a 3 way blade for my 420.
- 1954cooter
- 430 crawler
- Posts: 52
- Joined: Sat Oct 27, 2012 6:11 pm
- Location: New Brunswick, Canada
Most high pressure valves will only go down to 1500PSI or so.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
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