SkyTrak 6036 Service Manual - Manual (Page 299)

8.83 Model 6036 Legacy
Hydraulic System
f. Main Control Valve Assembly
This section covers the assembly of the load sense outlet,
attachment tilt, frame sway and auxiliary hydraulics
sections of the main control valve (Fig. 8-46, 1).
Note: ALWAYS replace seals, o-rings, gaskets, etc.,
with new parts to help ensure proper sealing and operation.
Lubricate seals and o-rings with clean hydraulic oil.
Assemble the Load Sense Outlet Section
1. Install a new oiled o-ring (Fig. 8-46, 10) and the plug
(9) into the load sense section (4).
2. Loosely install three nuts (Fig. 8-46, 2 and 66) onto tie
rods (3 and 67) and insert them into the load sense
section (4). At the end of the assembly procedure,
when all main control valve sections are in place,
the two tie rod nuts (2) will be torqued 13-15 lb/ft
(18-20 Nm) and the third tie rod nut (66) to
30-36 lb/ft (41-49 Nm).
Assemble the Attachment Tilt Section
1. Assemble the attachment tilt section (Fig. 8-46, 5) in
the reverse order from the disassembling procedure.
Refer to “Disassemble the Attachment Tilt Section”
on page 8.75.
2. Insert the spring (Fig. 8-46, 6) and poppet (7) into
the section.
3. Place a new oiled o-ring (Fig. 8-46, 8) between the
attachment tilt section (5) and the load sense outlet
section (4) and slide the attachment tilt section onto
the tie rods.
Assemble the Relief Valves for the Attachment Tilt
Section (Fig. 8-46, 5) and Auxiliary Hydraulics Section
(38), if Installed
Note: There is a seal and spring kit package for assembling
the relief valves.
1. Assemble the relief valves (Fig. 8-46, 16 and 43) in
the reverse order from the disassembling procedure.
Refer to “Disassemble the Relief Valve” on page
8.75.
2. Using a wrench on the body (Fig. 8-46, 45), install
the relief valve onto the section.
Assemble the Frame Sway Section
1. Assemble the frame sway section (Fig. 8 -46, 11) in
the reverse order from the disassembling procedure.
Refer to “Disassemble the Frame Sway Section” on
page 8.77.
2. Insert the shuttle (Fig. 8-46, 12), spring (13) and
poppet (14) into the section.
3. Place a new oiled o-ring (Fig. 8-46, 15) between the
attachment tilt section (5) and the frame sway
section (11) and slide the frame sway section onto
the tie rods.
Assemble the Auxiliary Hydraulics Section
1. Assemble the auxiliary hydraulics section (Fig. 8-46,
38) in the reverse order from the disassembling
procedure. Refer to “Disassemble the Auxiliary
Hydraulics Section” on page 8.77.
2. Insert the spring (Fig. 8-46, 40) and the poppet (41)
and the shuttle (39) into the section.
3. Place a new oiled o-ring (Fig. 8-46, 42) between the
auxiliary hydraulics section (38) and the frame sway
section (11) and slide the auxiliary hydraulics section
onto the tie rods.
4. Place a new oiled o-ring (Fig. 8-46, 63) on the
auxiliary hydraulic section (38) and set the entire
assembly aside. It will be attached to the mid-inlet/
outlet section (62) via the tie rods at the end of the
assembly procedure.