Snorkel TL37-01-007625, Инструкция по эксплуатации и запасным частям

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SLEW MOTOR
The slew motor is a high torque low speed hydraulic motor.
The slew motor is bolted directly on the slew gear. Apart from
greasing and checking for oil leaks, no maintenance is required.
The motor can be unbolted from the slew drive to check for
leakage. A full seal kit is available with overhaul instructions.
Location 3 and 4 on figure 3-15 indicates the hoses going to
the platform controls.
GENERAL TESTS OF LOAD HOLDING VALVES
All critical movements rely on 2 components for safety namely:
• The lock valve on the cylinder
• The closed centre on the valve block
The valve blocks used have very low leakage rate. This is ideal
for the slewing platform ram which has no lock valve.
To determine which load holding valve is in use be it the
valve block or cylinder lock valve, perform the procedure
below.
• With the pump not running, operate the valve blocks which leads to closing the ram up.
• If there is cylinder movement, then there is a leaking load holding valve on the cylinder.
• Do not use a machine with a failed load holding valve.
SLEWING PLATFORM RAM
Do not operate the slewing platform ram valve lever without the pump turning. If operated, the valve
lever can push the platform from side to side. This allows air to enter the system and the platform
will not stay put during transportation.
If this occurs, move the valve lever with the pump running. Moving the platform from side to side will
fill the cylinder with oil and the platform will lock in place when the lever is released.
BLEEDING
The hydraulic system needs no special bleeding. If a cylinder is stripped down or hoses for repair
removed, operate the cylinder fully in and fully out for the system to be operational.
Note
• Replace filter and oil regularly.
• Make sure the oil in the tank is clean.
• Never use dirty cans when filling up the tank with oil.
• In situations where oil replacement is needed, the system must be leaking.
• Use the right oil for the right temperature:
• Below 0 ° C - use low viscosity oil.
• Above 0 ° C - use regular grade oil.
• Keep a log of relief valve settings to monitor pump performance.
HYDRAULIC PUMP
The engine drives a hydraulic pump via a spider type coupling.
If there is a loss of oil pressure experienced and the motor is running correctly, use the check pro
-
cedures stated below.
• First check that the hydraulic system is working correctly by checking that the dump valve is
activated. If the dump valve is working and there is still no oil flow, the issue is most likely to
be a failed pump or that the coupling is spinning on the motor or pump shaft.
• Remove the bell housing to check that each coupling half is secured on the shaft. Then re-
move the pump and check the internal gears.
SERVICE AND REPAIR
Figure 3-15 : Hose connections to
the platform controls.