Landoll 7431 VT Plus - Manual (Page 49)

ASSEMBLY INSTRUCTIONS
3-25
Hydraulic Installation
NOTE
Refer to 3-9 for hydraulic cylinder fittings (factory
installed and those installed during setup).
Refer to Figures 3-10- 3-11 for lift and fold hydraulic
diagrams for 7431-20' and 7431-23' models.
Refer to Figures 3-12 - 3-13 for lift and fold hydraulic
diagrams for 7431-26' model. See Figures 3-18 - 3-19
for optional bolt on wing fold hydraulic diagram and fold
cylinder placement drawing.
Refer to Figures 3-14 - 3-15 for lift and fold hydraulic
diagrams for 7431-29' model.
Refer to Figures 3-16 - 3-17 for lift and fold hydraulic
diagrams for 7431-33' model.
1. Attach the base end of the 4 x 30 fold cylinder to the
fold cylinders mounts on the center frame with the
pins and roll pins provided. Position the cylinders so
the hydraulic ports point forward.
2. Using a 1-1/4 x 6-1/8 fold pin, flat washers, and 5/16
x 2-1/2 roll pins, attach the rod end of the 4” x 30”
cylinders to the slotted mounts on the wing frames.
3. Install 90 degree regular adapter fittings in both ends
of all lift cylinders.

CAUTION
4. Install the front manifold to the manifold bracket on
the front center gang using 1/2-13 x 3-1/2 hex head
cap screws and hex lock nuts.
5. On 33’ models, attach the manifold to the rear
manifold brackets on the implement using 1/2-13 x
3-1/2 hex head cap screws and hex lock nuts. Install
adapters in the front ports of this manifold.
6. Install lift system hoses per Figures 3-10, 3-12, 3-14,
and 3-16. Wrap lift system hoses with blue hose
wrap.
7. Attach hose clamp brackets to the scraper bar (See
Figure 3-20.) On 33' units, attach a hose clamp in
the ninth hole from the center of the machine on each
side of the front gangs. Secure hoses to the brackets
with hose clamps, 3/8-16 x 1-3/4 hex head cap
screws, and hex lock nuts.
8. Install fold system hoses per Figures 3-11, 3-13,
3-15, 3-17, and 3-18. Wrap fold system hoses with
yellow hose wrap.
9. Install restrictors, hoses and couplers in the optional
hydraulic leveler if so equipped (See “Hydraulic
Leveler (Option)” on page 3-9.) Wrap hydraulic
leveler hoses with black hose wrap.
10. Install plugs from lift cylinders in any remaining open
manifold, valve, or cylinder ports.
Restrictors are installed to prevent uncontrolled
dropping of wings. Removal of these restrictors,
or improper installation can result in serious
damage to the implement.