Ega Master 79632 Manuel D'instructions page 34

Excessive cutter
breakage
Excessive cutter
wear
Disassembly and re-assembly.
Dismantling and assembly should only be carried out using the sectional drawing.
Do not disassemble the tool until you know whether the problem is in the power supply, the
gearbox module, or the power and control (rear) module. Then only disassemble the tool as
necessary to repair as required. Keep contaminants such as dirt and grit away from the internal
parts at all times.
Always determine and correct the cause of the problem prior to re-assemble. Further wear and tool
failure can result, if the original cause is not corrected.
Prior to disassembly
Clean the exterior of the tool.
Make sure to have all new seals so they can be replaced during re-assembly. Note the orientation
of seals before removal. Install new seals in the same position as the original seals.
Note: For orientation of the parts identified in the following procedures, refer to the sectional
drawing and parts list located at the end of this manual.
Replace wear parts –in particular the vanes- when necessary. The vanes are considered worn if
their width is less 7,2 mm.
34
Steel swarf or dirt under cutter
Incorrectly re-sharpened or worn
cutter
Cutter skipping
Slide way needs adjustment
Cutter not attached tightly to arbor
Insufficient use of cutting oil or
unsuitable type of oil
See above
Incorrectly re-sharpened cutter
Insufficient or spasmodic cutting
pressure
REPAIR INSTRUCTION
Remove cutter, clean thoroughly and
replace
Re-sharpen or replace
See above
Adjust
Retighten
Replace or re-sharpen
Use sufficient steady pressure to slow
the drill down. This will result in
optimum cutting speed