OPERATION & MAINTENANCE MANUAL SWDE120B-3
adminicula are interfered or not.
（ 4 ） During the whole process of failing personnel should observe, command and
coordinate operation of operators. The horizontal state of the drill stand is shown in the
figure:
6.7 MACHINE MAINTENANCE
（1）Always check all parts of machine for damages, transformation and welding defects.
（ 2 ） Check all the bolts, screws. Especially for the screws, bolts of rotating mechanism,
tighten and fix them more frequently.
（ 3 ） Pay attention if there is abnormal sound or high temperature for diesel engine and
hydraulic motor.
（4）Check the electric circuitry and every switch and button.
（5）Check cable rubber sleeve and hydraulic hoses.
（6）Lubricate machine regularly and correctly. It is very important for the machine to be
operated smoothly and have longer service lifetime.
6.8 Others
1. See details about the impactor in the “Use & Maintenance Instruction of Impactor”.
2. Customer can choose dry or wet type dust collection according to local condition of
temperature and rock hardness.
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