Lubrication Points And Types Of Lubricant; Tightening Torque; Insulation Tests; No-Load Current Value - Hitachi G 13YD Technical Data And Service Manual

9-5. Lubrication Points and Types of Lubricant

Pinion chamber of Gear Cover Ass'y [4] <4> .....................
Metal .................................................................................... Mixed oil 0.5 cc

9-6. Tightening Torque

Tapping Screws D4 [47] <47> [53] <53> [56] <56> [56A] <56A> [60] <60>
...................................................................................................... 2.0
Seal Lock Screws (W/SP. Washer) M4 [18] <18> [23] <23> ........ 1.8
Tapping Screw D5 x 25 [1] <1> .................................................... 2.9
Machine Screw M5 x 20 [27] <27> ............................................... 1.6
Magnet [38] <38> (M6 left-hand thread) ....................................... 1.3
Special Nut M7 [5] <5> ................................................................. 2.0

9-7. Insulation Tests

On completion of disassembly and repair, measure the insulation resistance, and conduct the dielectric strength
test.
Insulation resistance: 7 M Ω or more with DC 500 V Megohm Tester
Dielectric strength test: AC 4,000 V/1 minute, with no abnormalities ................... 230 V --- 240 V products

9-8. No-load Current Value

After no-load operation for 30 minutes, the no-load current value should be as follows.
Voltage (V)
Current (A) max.
230 240
2.8
2.9
Nippeco grease (SEP-3A) 6 g
Generously rub grease onto the gear and pinion.
Mixed oil: Mixture of Hitachi power tool grease No. 2
(Unilube No. 00) and turbine oil
Mixture ratio 1:1 (weight ratio)
--- 17 ---
0.5 N•m (20 5 kgf•cm, 1.5
0.5 N•m (18 4 kgf•cm, 1.3
0.5 N•m (30 5 kgf•cm, 2.2
0.4 N•m (16 4 kgf•cm, 1.2
0.3 N•m (13 3 kgf•cm, 0.9 0.2 ft-lbs.)
0.5 N•m (20 5 kgf•cm, 1.5
0.4 ft-lbs.)
0.3 ft-lbs.)
0.4 ft-lbs.)
0.3 ft-lbs.)
0.4 ft-lbs.)