Hitachi C 6MFA, Technical Data And Service Manual

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(8) Tightening torque values for selected fasteners
Bolt (W/Washer) M7 x 17.5 [14] ............................................................... 9.8 2.0 N
•
m 100 20 kgf
•
cm
Seal Lock Screw (W/Sp. Washers) M6 x 14 [65] ..................................... 2.9 0.5 N
•
m 30 5 kgf
•
cm
Seal Lock Flat Hd. Screw M5 x 12 [4] ...................................................... 3.4 0.7 N
•
m 35 7 kgf
•
cm
Seal Lock Flat Hd. Screw M3 x 12 [10] .................................................... 1.8 0.4 N
•
m 18 4 kgf
•
cm
Machine Screw (W/Washers) M4 x 10 [16] .............................................. 1.8 0.4 N
•
m 18 4 kgf
•
cm
Machine Screws (W/Washers) M5 x 45 [17] ............................................ 3.4 0.7 N
•
m 35 7 kgf
•
cm
Machine Screw M5 x 12 [37] .................................................................... 3.4 0.7 N
•
m 35 7 kgf
•
cm
Hex. Hd. Tapping Screws D5 x 55 [47] .................................................... 2.9 0.5 N
•
m 30 5 kgf
•
cm
Tapping Screws (W/Flange) D4 [18] [46] ................................................. 2.0 0.5 N
•
m 20 5 kgf
•
cm
Hex. Socket Set Screws M5 x 6 [34] ........................................................ 2.0 0.5 N
•
m 20 5 kgf
•
cm
Brush Caps [42] ....................................................................................... 0.7 0.2 N
•
m 7.5 2.5 kgf
•
cm
Hex. Socket Set Screws M5 x 8 [39] ........................................................ 0.7 0.2 N
•
m 7.5 2.5 kgf
•
cm
Flat Hd. Screw M6 x 20 [52] ..................................................................... 0.7 0.2 N
•
m 7.5 2.5 kgf
•
cm
Seal lock hex. socket hd. screw M6 for Sleeve [58] ................................. 3.4 0.7 N
•
m 35 7 kgf
•
cm
Set screws M3.5 x 7.5 for Switch (2P Pillar Type) W/Safety Lock [55] .... 0.3 N
•
m 3 kgf
•
cm
Cap Nut M10 [33] ..................................................................................... 7.8 to 9.8 N
•
m 80 to 100 kgf
•
cm
+ 0.07
-- 0.05 + 0.75
-- 0.5
8-3. Insulation Tests
On completion of disassembly and repair, measure the insulation resistance and conduct dielectric strength test.
Insulation resistance: 7 M Ω or more with DC 500 V megohm tester
Dielectric strength: AC 4000 V/1 minute, with no abnormalities
8-4. Deflection of Saw Blade
Allowable deflection level of the saw blade shall be as follows.
8-5. Cleaning the Case
When the unit becomes soiled, clean it with a clean soft rag moistened with soapy water. Since chloric solvents,
gasoline and thinner tend to melt plastic material, their use for cleaning is absolutely avoided.
Model
C 6MFA, C 7MFA
Allowable level
0.3 mm max.
Measuring point
150