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ROUTINE INSPECTION AND MAINTENANCE
1. VISUAL INSPECTION
Detect a potential problem early.
FASTENERS
Inspect all fasteners. Retighten as necessary. See page 34 for torque values.
WELDS
Check for cracks, repair as necessary.
HOSES AND TUBING
Check for oil leaks, loose clamps and hose abrasion.
HYDRAULIC OIL
MAINTAIN A CLEAN HYDRAULIC SYSTEM
If non-petroleum oil is used, contact NPK Service Department for compatibility.
Keep hoses clean and capped when dismounting or storing hammer.
Change oil and filters as recommended by carrier manufacturer. Periodic oil
sampling is recommended.
2. DEMOLITION TOOL LUBRICATION
Important: It is imperative that
grease is maintained in the tool
bushing contact area at all times.
This may require hourly greasing
depending on job conditions.
Important: The hammer must be in a
vertical position with down force
applied to push the tool all the way in.
This prevents grease from entering
piston impact area. Pump grease
into hammer until grease is seen
coming out between the tool and
tool bushing, see page 13.
USE A GOOD QUALITY, HIGH TEMPERATURE EP#2 GREASE CONTAINING ANTI-
WEAR ADDITIVES, SEE PAGES 13, 14, and 15.
If machine is equipped with an AUTOLUBE System, check grease reservoir daily.
3. TOOL and TOOL BUSHING WEAR
Check the tool and tool bushings for damage, wear or deformation on a regular
weekly basis. Replace the tool and/or bushings when wear exceeds the maximum
clearance limit, see page 30.
Do not hard face or sharpen the tool point with a cutting torch. Excessive heat
from torching or welding causes embrittlement, breakage, and flying pieces.
Resharpen only with a surface grinder or milling machine using sufficient
cooling.
Please consult your authorized NPK Dealer or NPK Service Department for
additional information.
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