Komatsu 06253 - Relieve Pressure in the Hydraulic System

OPERATION 3.16 STOPPING THE ENGINE
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3.16.1 RELIEVE PRESSURE IN THE HYDRAULIC SYSTEM
WARNING
With the engine at standstill and main switch (1) in ON posi-
tion, move all controls for working attachment and crawlers
several times through all shift positions to relieve the pres-
sure in the hydraulic system. The necessary oil pressure for
shifting the spools of the main control valves is provided by
a pressure accumulator in the pilot oil circuit.
N
OTICE
The pressure accumulator in the pilot oil circuit serves also
for lowering a raised working attachment to the ground with
the engine at standstill. If, for example, the engine stalls with
the working attachment in a raised position, lowering of the
working attachment is possible by operating the respective
control lever.
6. Set main switch key (1) to ”0” position and remove.
7. Set lock lever to the rear in LOCKED position.
8. Switch off the battery main switches and remove keys.