Frame And Deck; Hydraulic System - Landoll 334C Operator's Manual

4-3 FRAME AND DECK

4-3.1 Repairing Structural Defects
If any structural defect is found, the fault must
be corrected before further use of the vehicle. To
continue usage could endanger the semitrailer, its

4-4 HYDRAULIC SYSTEM

4-4.1 General
CAUTION
DO NOT ALLOW ALUMINUM BRIGHTE-
NER OR OTHER ACID COMPOUNDS
TO CONTACT HYDRAULIC HOSES.
THE HOSE COVERS ARE SUSCEPTI-
BLE TO ACID DETERIORATION.
Figure 4-2 Pressure Settings for Control Valve Ports
load, personnel, traffic, and properties. If any
cracks or breaks are found, return the semitrailer
to Landoll factory for repairs. Inspect the deck daily
for broken or missing attachments. Replace any
defective parts promptly.
a. Check the oil level of the tractor wet kit hy-
draulic tank weekly, or after any leakage. See
Table 4-1 for proper hydraulic oil. Check the
hydraulic oil level with hydraulic cylinders in
the retracted position. Disengage the hydrau-
lic pump.
b. Overfilling can cause hydraulic fluid over-
flow during operation.
4-4.2 Pressure Settings
a. Sections 1 through 5 and 8 on the control
valve are set at 2500 psi. Sections 6 and 7
have relief valves. The front ports of section 6
should be set at 1500 psi and the rear port at
500 psi. The front port of section 7 should be
set at 2500 psi and the rear port at 500 psi.
(See Figure 4-2).
4-5