Jack,
Ouch! That hurts to hear about the rebuild kits getting so expensive. The good news: The only critical part in the kit is the poppet valve, so you only need a kit if the poppet valve is leaking.
The O-ring designations I provided are the industry designation:
013N90
014N90
908
These are for the hex plugs, poppet valve bodies, and spool.
Chris Zavatson
N91CZ
360std
From: "marv@lancair.net" <marv@lancair.net>
To: lml@yahoo.com
Sent: Friday, February 10, 2012 7:26 AM
Subject: [LML] Re: hydraulic pump servicing
Posted for JON ADDISON <jraddison@msn.com>:
Chris
The Parker pump kit (634412) went from $60 to now $123. In a direct email to
me you indicated the o-rings of interest are 013N90, 014N90 and 908 durometer
90 (from McMaster) Thought I'd try and share that info with the rest.
It appears a blackish seepage is emanating from the top of the pump itself
and running down the side of the pump into the reservoir. I haven't
investigated it yet by taking it off the adapter.
Also, been looking at gages. So far 1 1/4 inch is the smallest and
electric/sensor driven. Hydraulic driven directly at that size only goes to
2000psi and only good for 115% over
pressure. It appears to me that with
over temps driving, we would best have at least 3000psi capability. What
have others found?? Also, if hydraulic-direct gage is used with a 3 foot
line will the air purge itself out since there is no return line??
Jack Addison360JS
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