Insulation Tests; Cleaning The Cover - Hitachi C 9U2 Service Manual

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. Cleaning the Cover

Clean the exterior of the tool with a soft cloth moistened with soapy water, and dry thoroughly. Chloric solvent,
gasoline, and thinner will cause plastic components to dissolve.
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