Maintenance – Danuser LM40 Hammer User Manual
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CHECK FOR CLEAN HYDRAULIC OIL
The majority of all hydraulic component failures are caused by contamination of the
hydraulic oil. At all times, keep dirt and other contaminates from entering the hydraulic
system during connecting and disconnecting the hydraulic system. Always use dust caps
and plugs on all quick disconnects when not in use.
CHECK ALL HYDRAULIC HOSE ASSEMBLIES
Check for cracked or brittle hoses. Replace hoses immediately if cracked or brittle.
Replacement of hoses before failure will prevent loss of hydraulic oil, hydraulic oil
contamination, and component damage caused by cavitation.
CHECK ATTACHMENT AND ALL ACCESSORIES
Check all bolts and fasteners for tightness. Visually inspect the attachment for damage.
GREASE ZERKS
Grease the zerk on the drive chain bearing. Grease the zerk on the bottom chain sprocket
shaft. If equipped with Tilt, grease the zerk on the tilt pivot boss.
LUBRICATE ATTACHMENT
Grease the inside of the Hammer case. Lubricate the drive chain with a high quality
commercial grade chain lubricant.
CHECK ATTACHMENT AND ACCESSORIES
Visually inspect all welds for cracks. Check the chain catch for wear. Check all bolts and
fasteners for tightness.
CHECK CHAIN TENSION
Inspect the chain tensioning springs. Springs should be preloaded but not entirely collapsed.
DAILY
Maintenance
EVERY 40 HOURS
Personal protection
equipment including hard
hat, safety glasses, safety
shoes, gloves, and ear
plugs are recommended
during assembly,
installation, operation,
maintenance, service,
removal, or movement of
the attachment.