IAI America FS - Manual (Page 39)

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5.4 Inside Visual Inspection
Turn the power OFF, remove the side cover and do a visual check of the inside.
Confirm the inside condition with visual check.
Check to see if there is any dust or foreign objects inside the unit, and check the lubrication and
condition of the timing belt.
x Even if the grease is a brown color, the lubrication is fine as long as the travelling surface appears
to be wet.
x Check to see if there is any damage to the timing belt such as cracks in the teeth or in the section
behind the teeth.
(Note) The timing belt may generate a black powder. This is due to friction and is not unusual.
x The side cover can be removed with a hexagonal wrench.
If the grease is mixed with dust and dirty or has no shiny appearance, or if the grease has lost its
efficacy due to prolonged use, clean the applicable area and then replenish the grease.
After you finish inspection, tighten the mounting screws for side cover. The screw torque should be for a
cross-recessed head machine screw.
5.5 Internal Cleanup
x When cleaning, wipe with a soft cloth to remove dust and dirt.
x There is a risk of dust getting in from a clearance. Do not blow compressed air strongly to the body.
x Do not use oil type solvent, neutral detergent or alcohol.