Hitachi SB 8V2, Technical Data And Service Manual, Page: 16 / 22

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9-5. Tightening Torque
Tapping Screw (W/Flange) D4 x 16 ................................................................ 2.0 0.5 N
•
m (20 5 kgf
•
cm)
Tapping Screw (W/Flange) D4 x 30 ................................................................ 2.0 0.5 N
•
m (20 5 kgf
•
cm)
Tapping Screw (W/Flange) D5 x 45 ................................................................ 2.9 0.5 N
•
m (30 5 kgf
•
cm)
Hex. Hd. Tapping Screw D5 x 55 .................................................................... 2.9 0.5 N
•
m (30 5 kgf
•
cm)
Machine Screw M4 x 10 ................................................................................. 1.8 0.4 N
•
m (18 4 kgf
•
cm)
Machine Screw (W/Washer) M4 x 12 ............................................................. 1.8 0.4 N
•
m (18 4 kgf
•
cm)
Machine Screw M4 x 14 ................................................................................. 1.8 0.4 N
•
m (18 4 kgf
•
cm)
Machine Screw (W/Washer) M3.5 x 6 ............................................................ 0.6 0.15 N
•
m (6 1.5 kgf
•
cm)
Pulley (A) left-handed thread M8 .................................................................... 8.5 1.5 N
•
m (85 15 kgf
•
cm)
Pulley (B) M8 .................................................................................................. 8.5 1.5 N
•
m (85 15 kgf
•
cm)
Brush Cap ....................................................................................................... 0.49 to 1.47 N
•
m (5 to 15 kgf
•
cm)
Voltage (V)
Current (A) max.
110
5.4
120
5.0
220
2.8
230
2.9
240
2.8
9-6. Insulation Test
On completion of disassembly and repair, measure the insulation resistance and conduct the insulation test
(dielectric strenght test).
Insulation resistance: 7 M
Ω
or higher with DC 500 V megohm tester
Dielectric strength: AC 4,000 V for 1 minute,
with no abnormalities ......................... 220 V --- 240 V (and 110 V for U.K. products)
AC 3,750 V for 1 minute,
with no abnormalities ......................... 120 V for the U.S.A. and Canada products
AC 3,000 V for 1 minute,
with no abnormalities ......................... 110 V --- 127 V
(except for U.K., the U.S.A. and Canada products)
9-7. No-load Current Value
After no-load operation for 30 minutes, the no-load current value should be as follows at a frequency of 50/60 Hz.
Note: Sanding belt should be installed and dial should be set to "5" for no-load operation.