Hitachi CR 24DV Handling Instructions Manual page 45

NOTE
No. 1 – No. 96 HCS blades are sold separately as
optional accessories.
2. Selection of BI-METAL blades
The BI-METAL blade numbers in Table 5 are
described on the packages of special accessories.
Select appropriate blades by referring to Table 5
and 6 below.
Table 5: Bl-METAL blades
Blade
Uses
No.
No. 101 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 102 For cutting steel and stainless pipes
less than 100 mm in outer diameter
No. 103 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 104 For cutting steel and stainless pipes
less than 100 mm in outer diameter
No. 105 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 106 For cutting steel and stainless pipes
less than 100 mm in outer diameter
No. 107 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 108 For cutting steel and stainless pipes
less than 100 mm in outer diameter Below 3.5
No. 121 For cutting and roughing lumber
No. 131 For cutting and roughing lumber
No. 132 For cutting and roughing lumber
NOTE
Nos. 101 – No. 132 Bl-METAL blades are sold separately
as optional accessories.
3. Selection of blades for other materials
Table 6
Meterial Material
to be cut quality
Iron plate Mild steel
plate
Nonferrous Aluminium,
metal Copper and
Brass
Thickness
(mm)
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
Below 3.5
100
100
100
Thickness
Blade No.
(mm)
2.5 – 10 No. 1, 2, 101,
102, 103, 104,
105, 106, 131
Below 3.5 No. 3, 107,
108
5 – 20 No. 1, 2, 101,
102, 103, 104,
105, 106, 131,
132
Below 5 No. 3, 107,
108
Meterial Material
to be cut quality
Systhetic Phenol resin,
resin Melamine
resin, etc.
Vinyl chloride,
Acrylic resin,
etc.
MAINTENANCE AND INSPECTION
CAUTION
Be sure to turned off the switch and remove the
battery before maintenance and inspection.
1. Inspecting the blade
Continued use of a dull or damaged blade will
result in reduced cutting efficiency and may cause
overloading of the motor. Replace the blade with
a new one as soon as excessive 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. 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 whthin the brush holders
NOTE:
When replacing the carbon brush with a new one,
be sure to use the Hitachi Carbon Brush Code No.
999058.
5. 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. 31.
When installing the carbon brush, choose the
direction so that the nail of the carbon brush agrees
with the contact portion outside the 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 outside the brush
tube. (You can insert whichever one of the two
nails provided.)
English
Thickness
Blade No.
(mm)
10 – 50 No. 1, 2, 4,
101, 102, 103,
104, 131, 132
5 – 30 No. 3, 5, 8,
105, 106, 107,
108
10 – 60 No. 1, 2, 4,
101, 102, 103,
104, 131, 132
5 – 30 No. 3, 5, 8,
105, 106, 107,
108
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