Labounty 513914, Руководство по безопасности, эксплуатации и техническому обслуживанию

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Page 26 Section 5 Maintenance
MOBILE DEMOLITION PROCESSORS
THE CROSSOVER RELIEF VALVE
continued
The crossover relief valve provides overload protection for the rotator. See Figure 5-12. This is not intended
to replace the circuit relief valve on the base machine. This valve has been preset at the factory and requires
no adjustment. DO NOT tamper with the crossover relief valve. If a malfunction is suspected due a lack of
rotator performance, a pressure check should be performed. Diagnostic fittings* are installed in the mani-
fold to provide a means of checking pressure. Contact the Stanley LaBounty Service Department for the
proper procedure for performing this check.
MOTION CONTROL VALVE MANIFOLD
One of two motion control valves are installed on the attachment depending on the size of the rotation mo-
tor. The motion control valve manifold provides overload protection and a load control system for the rotator
with two crossover relief valves and two brake valves. The crossover relief valves and brake valves have
been preset at the factory and require no adjustment; do not tamper with these valves. If a malfunction is
suspected due to a lack of performance in the rotator, a pressure check should be performed. Diagnostic
fittings* are installed in the manifold to provide a means of checking pressure. Contact the LaBounty Ser-
vice Department for the proper procedure for performing this check.
* Diagnostic fittings require a Parker PD series coupler on gauge.
The case drain line must be connected to
prevent failure to the case or motor seals.
CASE DRAIN ( IF EQUIPPED)
A case drain is required to relieve the back pres-
sure that develops in the hydraulic motor case as a
result of metering flow out of the motor. Depending
on the model, this port is located on the motor or is
routed to a bulkhead in the upper head side plate or
port block. A ½" hydraulic line should be connected
to this port and routed back directly to the tank via
a return line filter or a filter of its own. The maxi-
mum allowable back pressure in this line should not
exceed 300 PSI.
LOAD CONTROL VALVES
TEST GAUGE
PORTS
RELIEF VALVES
(NON-ADJUSTABLE)
A
T
D
B
M1
M2
G1 G2
MOTOR
FIGURE 5-12
CROSSOVER RELIEF
VALVE USED ON THE
MDP 27 AND MDP 35.