Maintenance And Inspection - Hitachi CG 18DSDL Safety Instructions And Instruction Manual

MAINTENANCE AND INSPECTION

CAUTION
Pull out battery before doing any inspection or
maintenance.
1. Checking the condition of the nylon head
The nylon head should be checked regularly. If
worn or broken nylon head can slip or decrease
the efficiency of the motor and burn it out.
Replace worn nylon head with new ones.
CAUTION
If you use a nylon head of which point is worn or
broken, it will be dangerous. So replace it with a
new one.
2. Check the Screws
Loose screws are dangerous. Regularly inspect
them and make sure they are tight.
CAUTION
Using this gardening appliance with loosened
screws is extremely dangerous.
3. Inspecting the carbon brushes (Fig. 29)
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.
999015.
4. Replacing carbon brushes
Take out the carbon brush by first removing the
brush cap and then hooking the protrusion of the
carbon brush with a flat head screw driver, etc., as
shown in Fig. 30 and Fig. 31.
0.16" (4 mm)
Wear limit
Fig. 29
When installing the carbon brush, choose the
direction so that the nail of the carbon brush (See
Fig. 32) agrees with the contact portion of brush
tube. Then push it in with a finger as illustrated in
Fig. 32. Lastly, install the brush cap.
CAUTION
Be absolutely sure to insert the nail of the carbon
brush into the contact portion of brush tube. (You
can insert whichever one of the two nails
provided.)
Caution must be exercised since any error in this
operation can result in the deformed nail of the
carbon brush and may cause motor trouble at an
early stage.
Brush cap (2 pcs.)
Fig. 30
Protrusion of
carbon brush
Fig. 31
Contact portion of
brush tube
Fig. 32
English
Brush
cap
Carbon
brush
Nail of carbon
brush
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