|BigDanT said: (quoted from post at 20:57:28 05/13/13) Reinstalled pump after putting in a new NAA piston and rings, cleaned pump and housing, new gasket set, new CFP. readjusted linkage with Zanes jig and added new 134d oil I noticed the safety valve sitting on the work bench...crap...I thought I would see how it did and go from there...it will lift a 5' grader box just fine. will even hold it there for days, but it can't lift a 6' disc. it tries but just can't do it...so here is my question...can a bad safety valve cause it not to lift a heavy load or is there something else wrong here? Thanks Dan|
The simple answer is yes. How heavy is the disc? Connect a pressure gauge to the test port and see if you are getting 1500 PSI. If you are the disc is simply too heavy for the 3pt. If the pressure is less than 1500 PSI you have insufficient pressure - possibly caused by a weak pump and/or a leaking relief valve.
The safety and releif are two separate valves on the NAA and later system.
TOH This post was edited by TheOldHokie at 03:36:39 05/14/13.