Advertisement
Tractor Stack Valve Modifications S/N 398796 & Down
Tractor Rear Hydraulic Valve Stack Connections:
Change End Plate Summary, The original JD Factory LH Valve End Plate (See Figure 2) on the rear
of the Tractor Hydraulic Valve Stack Outlet will have to be changed. The New LH Valve End Plate is Part
# 02978829. This is done to install a new Valve End Plate with the Load Sense Port (See Figure 5 and
6). The following steps are for installation of the new Valve End Plate, if these procedures are not
followed damage to the Tractor Hydraulic Outlet could occur. Figure 27 is standing behind Tractor
looking forward and shows the Old End Plate.
Figure 27
LH Valve
End Plate
Tie
Rods
No Ports in JD Original Valve End Plate
Valve Hose to Tractor Connections:
1.
Hose Pressure Supply, ("P" Marked on Valve), Qty of one, # 8 hose X 190" Long, hose
(# 02976714) with Red Tie. This connects to the rear of the Tractor (See Figure 1)
2.
Hose for Tank Return, ("T" Marked on Valve), Qty of one, # 8 hose X 190" Long, hose
(# 02976713) with Orange Tie. This connects to the rear of the Tractor (See Figure 1).
3.
Hose for Load Sense, (Note Marked on Valve See Figure 1) Qty of one, #4 hose X 190"
Long, hose (#02215700). This Hose connects to the rear of the Tractor (See Figure 2)
This Hose cannot be connected till Stack Valve has been modified with New LH End Plate.
Hose End Fitting Torque Specs:
Hose End Type:
Dash
Nominal Cyl.
Size
Size (in.)
-4
1/4"
-6
3/8"
-8
1/2"
* Straight Threads do not always seal better when higher torque is used. Too much torque causes
distortion and may lead to leakage. DO NOT over torque fittings and DO NOT allow any contami-
nants to enter system through fittings when installing them.
Machete (JD -62,63,6420 Asy Man) 10/04
© 2004 Alamo Group Inc.
Pressure Port (Plugged) Tank Return Port (Plugged)
(Stack Valve Connections)
37 Degree Angle End Steel Hose End Fittings*
Torque
in. lbs.
140
230
450
Section 5 - 10
Original LH End Plate Shown
"P"
"T"
Torque
ft .lbs.
12
19
38
RH Valve End
Plate
Tie
Rods
Advertisement
