Maintenance And Inspection - Hitachi CR 13VC Handling Instructions Manual

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2. Selection of BI-METAL blades
The BI-METAL blade numbers in Table 2 are
described on the packages of special accessories.
Select appropriate blades by referring to Table 2
and 3 below.
Table 2: 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 130 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 130 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 130 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 130 mm in outer diameter Below 3.5
No. 121 For cutting and roughing lumber
No. 131 All purposes
No. 132 All purposes
NOTE
Nos. 101 – No. 132 Bl-METAL blades are sold separately
as optional accessories.
3. Selection of blades for other materials
Table 3
Meterial Material
to be cut quality
Iron plate Mild steel
plate
Nonferrous Aluminium,
metal Copper and
Brass
Systhetic Phenol resin,
resin Melamine
resin, etc.
31
Thickness
(mm)
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
Below 3.5
300
—
—
Thickness
Blade No.
(mm)
2.5 – 19 No. 1, 2, 101,
102, 103, 104,
105, 106, 131,
132
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
10 – 50 No. 1, 2, 4,
101, 102, 103,
104, 131, 132
5 – 30 No. 3, 5, 8,
105, 106, 107,
108
Meterial Material
to be cut quality
Systhetic Vinyl chloride,
Acrylic resin,
etc.

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. 27)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or
near the "wear limit", it could result in motor trouble.
When an auto-stop carbon brush is equipped, the
motor will stop automatically.
At that time, replace both carbon brushes with new
ones which have the same carbon brush Numbers
shown in the figure. In addition, always keep carbon
brushes clean and ensure that they slide freely
within the brush holders.
5. Replacing carbon brushes:
Disassemble the brush caps with a slotted-head
screwdriver. The carbon brushes can then be easily
removed.
6. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by an Hitachi Authorized
Service Center.
This Parts List will be helpful it presented with the
tool to the Hitachi Authorized Serivde Center when
requesting repair or other maintenance.
In the operation and maintenance of power tools,
the safety regulations and standards prescribed in
each country must be observed.
MODIFICATIONS:
Hitachi Power Tools are constantly being improved
and modified to incorporate the latest technological
advancements.
Acccordingly, some parts (i.e. code numbers and/
or design) may be changed without prior notice.
Thickness
Blade No.
(mm)
10 – 60 No. 1, 2, 4,
101, 102, 103,
104, 131, 132
5 – 30 No. 3, 5, 8,
105, 106, 107,
108