Landoll 7431 VT Plus - Manual (Page 33)

ASSEMBLY INSTRUCTIONS
3-9
Hydraulic Leveler (Option)
1. Thread a 1-1/2-6 hex nut onto the leveler screw
assembly (See Figure 3-4.) Initially leave
approximately 7” of threads visible between the
1-1/2-6 hex nut and the leveler spring nut. Further
adjustment may be required.
2. Thread the leveler tube onto the leveler screw
assembly until it contacts the 1-1/2-6 hex nut. Rotate
the tube so the grease zerk hole in the threaded end
points upward.
3. Slide the leveler cross over the front end of the
leveler tube.
4. Insert the 3-1/2 x 6 hydraulic leveler cylinder into the
front end of the leveler tube and pin using two 5/8”
steel leveler pins. Rotate the cylinder so the hydraulic
ports point to the left side of the implement.
5. Slide the leveler cylinder cross up to the cylinder and
secure with 1/2-13 x 2 hex head cap screws and hex
lock nuts. Install the screws from the back of the
leveler cylinder cross, pointing forward for proper
operating clearance. The indicator window of the
leveler cylinder cross should point to the right side of
the implement.
6. Slide the leveler cross brackets onto the leveler
cylinder cross and secure with washers and 5/16” x
2-1/2” spring slotted pins.
7. Attach the leveler cross brackets to the top of the
leveler L link using 3/4-10 x 3-1/2 hex head cap
screws and hex lock nuts.
8. Install grease zerks in the threaded end of the leveler
tube and the leveler cylinder cross.
9. With a 1/2-13 x 2 hex head cap screw and hex lock
nut, attach the leveler indicator gauge to the leveler
cylinder cross. Do not over tighten this screw, as the
indicator gauge must be free to pivot about this joint.
10. Rotate the leveler tube so the cross-hole for the level
indicator rod is horizontal. Wrench-flats are provided
at the threaded end of the leveler tube to make this
adjustment. Secure the 1-1/2-6 hex lock nut to
prevent the leveler tube from rotating further.
11. Insert the threaded end of the leveler indicator rod
through the leveler tube cross-hole and the other rod
end through the bottom leveler indicator hole.
Secure the indicator rod with a 3/8-16 hex lock nut.
12. Install 1/32” restrictor fittings in the leveler cylinder.
NOTE
These are smaller restrictor fittings than those used in the
fold system.
13. Install adapters into each port of check valve (See
Figure 3-4.)
14. Install check valve to hose clamp holder on hitch
using 3/8-16 x 2 hex head cap screws and hex lock
nuts. Note that ports C1/C2 go to the 3-1/2 x 6
cylinder and ports V1/V2 go to the tractor (See
Figure 3-5.)
Figure 3-5: Check Valve Placement
15. Assemble 56” and 64” hoses from the 3-1/2 x 6
cylinder to the check valve,
16. Attach (2) 140” hoses from the check valve to the
tractor
C2
C1
V2
V1
3-1/2 X 6
CYLINDER
HOSE HOLDER
CLAMP
CHECK VALVE
W/ ADAPTERS
HOSE, 140” check valve placement
HOSE, 56”
HOSE, 64”