Komatsu PC5500-6 Operation & Maintenance Manual page 455

Hydraulic mining shovel
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MAINTENANCE
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
4.12.4 SIGNAL HORN COMPRESSOR - CLEAN AND LUBRICATE
See illustration Z 9543
Unscrew collector protection cap (2).
Unscrew ball bearing cover and fill it half way up with grease.
If the fins of the collector are very strongly blackened or coated
with verdigris, clean them with emery cloth.
455

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