Lubrication; Maintenance And Inspection - Hitachi DH 14DSL Handling Instructions Manual

CAUTION
Do not expose directly your eye to the light by looking into the light.
If your eye is continuously exposed to the light, your eye will be hurt.
NOTE
To prevent the battery power consumption caused by forgetting to turn off the LED light, the
light goes off automatically in about 15 minutes.

LUBRICATION

Low viscosity grease is applied to this rotary hammer so that it can be used for a long period
without replacing the grease. Please contact the nearest service center for grease replacement
when any grease is leaking form loosened screw.
Further use of the rotary hammer despite the grease shortage causes damage to reduce the
service life.
CAUTION
A specifi c grease (FG-6A) is used with this machine, therefore, the normal
performance of the machine may be badly aff ected by use of diff erent grease.
Please be sure to let one of our service centers to undertake replacement of the
grease.

MAINTENANCE AND INSPECTION

1. Inspecting the tool
Since use of a dull tool will degrade effi ciency and cause possible motor malfunction,
sharpen or replace the tool as soon as abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that they are properly tightened. Should
any of the screws be loose, retighten them immediately. Failure to do so could result in
serious hazard.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the power tool.
Exercise due care to ensure the winding does not become damaged and/or wet with oil or
water.
4. Inspecting the carbon brushes (Fig. 21)
The motor employs carbon brushes which are consumable
parts. Since and excessively worn carbon brush can result
in motor trouble, replace the carbon brush with new ones
when it becomes worn to or near the "wear limit". In addition,
always keep carbon brushes clean and ensure that they slide
freely within the brush holders.
NOTE
When replacing the carbon brush with a new one, be sure to use the Hitachi Carbon Brush
Code No. 328481.
39
English
Wear limit
3mm
9.5mm
Fig. 21