Author	[Modern View]
DC3puller 12-07-2012 17:50:58 67.58.230.86 Report to Moderator	My 4690 hyd. valvs arn't puting out enough preasure pump preasure fine are thy wore out can they be rebuilt wouldn't think all four would be bad. If bad where can a guy get some good ones at? [Reply]   [No Email]
JT's RandR 12-10-2012 04:51:32 67.58.230.86 Report to Moderator	Re: 4690 hyd. valves in reply to DC3puller, 12-07-2012 17:50:58   The services manual says no less than 20 gpms coming out of the remote valves. the valves had readings of 16,10,3,6. The one with only 10 has no lifting presure you put a load on it and it does nothing. There is only one valve with flow control and it is the bad one and we have tried it all the way open and closed off. [Reply]  [No Email]
JT's RandR 12-09-2012 11:19:45 67.58.230.86 Report to Moderator	Re: 4690 hyd. valves in reply to DC3puller, 12-07-2012 17:50:58   The pressure's were taken on each outlet they all were around 2000 psi but as soon as you moved the lever to the neutral position the all leak off horible. We also did a flow check with a flow meter and all of the remotes were below there rated gpm. So one mentioned a small screen filter that is before the blocks could this cause these problems? [Reply]  [No Email]
mEl 12-09-2012 12:21:04 108.10.129.188 Report to Moderator	Re: 4690 hyd. valves in reply to JT's RandR, 12-09-2012 11:19:45   DC3 puller, on the tractor pulling forum I posted a pic of a DC4 puller we built, It is under D tractor for pulling, thought you might like to see it, also a link to a video of it pulling at a local pull here in Pa. The pressure is adjustable on the compensator valve for high pressure, Are you sure the flow adjustments were wide open? How far down were the flow readings from specs? Do cylinders leak down badly with weight on them? mEl [Reply]  [No Email]
mEl 12-08-2012 12:42:55 108.10.129.188 Report to Moderator	Re: 4690 hyd. valves in reply to DC3puller, 12-07-2012 17:50:58   Where did you measure the pump pressure? mEl [Reply]  [No Email]