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(5) Grease
Greasing locations
(a) Apply grease (Doubrex 251) to the following locations.
Spindle [17]: Cam groove, sliding section and engaged portion with the Anvil [6]
Hammer [8]: Cam groove, sliding section and the click
Steel Balls D7.14 [7]
Steel Balls D3.97 [9]
Hammer Washer [10]
Sliding section of the Spring Seat [12]
Inner circumference of the metal in the Hammer Case Ass'y [3]
(b) Apply grease (Nippeco SEP-3A) to the following locations.
Pinion tooth flanks of the Armature [27]
Tooth flanks of the Ring Gear [20]
Tooth flanks and inner circumference of the Gear Shaft [16] and the Idle Gear Set [18]
(6) Screw tightening torque
Seal Lock Hex. Socket Hd. Bolt M5 x 45 [2] ..................................................... 7.8 1.5 N
.
m (80 15 kgf•cm)
Seal Lock Hex. Socket Hd. Bolt M5 x 10 [47] ................................................... 3.9 1.5 N
.
m (40 5 kgf
•
cm)
Tapping Screw (W/Flange) D4 [34] [48] ............................................................ 2.0 0.5 N
.
m (20 5 kgf
•
cm)
Brush Cap [53] .................................................................................................. 1.0 N
.
m (10 kgf
•
cm)
Machine screw M3 (at the Switch [36]) ............................................................. 0.8 0.2 N
.
m (8 2 kgf
•
cm)
Hex. Hd. Tapping Screw D5 x 70 [29] ............................................................... 2.9 0.5 N
.
m (30 5 kgf
•
cm)
9-3. Insulation Tests
On completion of disassembly and repair, measure the insulation resistance and conduct a dielectric strength test.
Be sure to perform the insulation resistance measurement and the dielectric strength test between the plug pins
and the outside metallic parts such as the anvil.
Insulation resistance: 7 M Ω or more
Dielectric strength: 2,500 V/1 minute .... 110 V to 120 V
4,000 V/1 minute .... 220 V to 240 V
9-4. No-load Current Value
After no-load operation for 30 minutes, the no-load current should be as follows.
110 V .... 4.0 A or lower
120 V .... 3.8 A or lower
220 V .... 2.0 A or lower
230 V .... 2.1 A or lower
240 V .... 2.0 A or lower
+ 0.5
0
+ 5
0