Troubleshooting (pump) – Multiquip LS-300 User Manual
Page 62
PAGE 62 — MAYCO LS300 CONCRETE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (06/21/10)
The hydraulic troubleshooting procedures listed below are intended for use by individuals equipped with the proper tools and
equipment and are familiar with hydraulic systems and safe shop practices. Use the Pump Troubleshooting Table (Table 8) to
identify possible causes for the pump’s malfunction. Contact the Multiquip Service department for the proper repair procedure.
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You will be required to put your hand in the concrete
cylinders or near the shuttle tube. You are at
EXTREME RISK of injury or AMPUTATION if the
engine is running or if pressure is in the hydraulic
system.
Prior to performing any maintenance on the pump, stop
the engine by turning off the ignition switch and remove
the starter key. Place a “DO NOT OPERATE” tag
over the switch and disconnect the battery. The
pressure reading on the accumulator pressure gauge
MUST read ZERO. ALWAYS relieve the accumulator
circuit to zero pressure
prior to performing any
maintenance on the
pump.
DANGER - AMPUTATION RISK
DO NOT open hydraulic lines or loosen hydraulic fittings
while the engine is running! Hydraulic fluid under pressure
can penetrate the skin, blind, cause burns or create other
potentially dangerous hazards.
WARNING - HYDRAULIC SYSTEM HAZARD