Hitachi H 45MEY Service Manual page 15

CAUTION: Be sure to apply TB1401 screw locking agent to the threads of the following screws and
bolts. Otherwise, the screws or bolts loosened by vibration may cause damage to the
tool body.
M6
• Seal Lock Hex. Socket Hd. Bolt M6 x 45 [49]{46} ······························· 9.8
• Hex. Socket Hd. Bolt (W/Flange) M6 x 25 <18> ································· 9.8
M5
• Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [65]{62} ····························· 7.84
• Hex. Socket Hd. Bolt (W/Flange) M5 x 12 <14> ································· 4.9
• Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [65]{62} ····························· 3.92±0.49 N•m (40±5 kgf•cm)
• Hex. Socket Hd. Bolt (W/Flange) M5 x 12 <14>
for mounting the tail cover ····························································· 4.9
• Hex. Socket Hd. Bolt (W/Flange) M5 x 12 <14>
for mounting the cylinder case cover ··············································· 3.92
M4
• Seal Lock Hex. Socket Hd. Bolt M4 x 12 [95]{92} ······························· 0.49
D5
• Hex. Hd. Tapping Screw D5 x 55 [44]{41} ········································ 2.94±0.49 N•m (30±5 kgf•cm)
• Tapping Screw (W/Flange) D5 x 25 (Black) [70]{67} ··························· 2.94±0.49 N•m (30±5 kgf•cm)
D4
• Tapping Screw (W/Flange) D4 x 16 [74]{71} ····································· 1.96±0.49 N•m (20±5 kgf•cm)
After completing disassembly and repair, measure the insulation resistance and dielectric strength.
Insulation resistance: 7 MΩ or higher (as measured with a 500 VDC megohm tester)
Dielectric strength: 4,000 VAC/1 minute, with no abnormalities
2,500 VAC/1 minute, with no abnormalities
After no-load operation for 30 minutes, the no-load current values should be as follows:
110 V
Voltage
3.2 A
Current max.
Tightening torque
Insulation test
No-load current value
120 V 127 V
2.9 A 2.8 A
-14-
+1.96
N•m (100
0
+1.96
N•m (100
0
+1.96
N•m (80
0
+1.96
N•m (50
0
+1.96
N•m (50
0
0
N•m (40
-0.49
+0.49
N•m (5
0
220 to 240 V, and 110 V for UK products
110 to 127 V (except UK products)
220 V 230 V
1.6 A 1.5 A
+20
kgf•cm)
0
+20
kgf•cm)
0
+20
kgf•cm)
0
+20
kgf•cm)
0
+20
kgf•cm)
0
0
kgf•cm)
-5
+5
kgf•cm)
0
240 V
1.4 A