Hydraulic questions

joe swanson · Jul 20, 2009

I have a 1985 336D with a YBH 765 and a FEL of unspecified origin. The BH is mounted on an undercarriage going to a mid point on the tractor and a connection to the top link of the 3PH with a PTO pump. No Problems works fine. My question is about the operation of the FEL loader which is quite different from other tractors I have owned.

In order to use the FEL loader I have to have the 3PH position control in the upper most position with the Lock valve (directly under the seat) tightly closed. As long as I'm using the busket everything is fine. The moment I stop I need to "lower" the position control or the Hydraulic pump hammers. Is this normal? Other machines I have owned and used the FEL loader was independant of the 3PH.

In this senario I can't use the FEL loader if I'm actively using an impelment on the 3PH??? Do I have this rigtht or is there a plumbing problem someplace???

Joe

HoyeTractor · Jul 21, 2009

Joe,
I don't think that is normal. You should be able to use both the three point & the loader at the same time. If you could post some pictures or a diagram of how it is hooked up we may be able to help you sort it out.

Aaron
Hoye Tractor Parts
Contact Us
(940)592-0181

joe swanson · Jul 21, 2009

Will do. I'm going back up this week end and will take some pict. Glad to here that is not normal it is a ral pain in the ***. Lot of new hoses I'm betting someone took them all off at once and screwed up putting them back on.

I have a plumbing schematic for the YBH nut nothing for the FEL

I'll try and get you thios pict. this week end.

Joe

joe swanson · Jul 26, 2009

Aaron

Thanks for taking my call the other day. We were correct the headless plug is necessary and its absence was causing the proble,. The chamber is 1/2 " Pipe and about 1 " deep, then it reduces to 1/4 pipe. this is where the headlesss plu goes in and block the passage between the TPH and th FEL. Works like a champ now.

Joe