4.2. CHECK POINTS FOR MECHANISM BLOCK.
< TROUBLE >
< CHECK >
< REMEDY >
Does not hammer
<CHECK INTERMEDIATE SHAFT ASSEMBLY.>
NO Replace
or weakness of
→
Check the wear condition of the change clutch and spring.
→
intermediate
hammering.
shaft assembly.
↓
OK
<CHECK RECIPROCATION BEARING.>
NO Replace universal
Check the smooth action between reciprocation bearing
→
coupling.
and universal coupling.
↓
OK
<CHECK PISTON AND HAMMER BLOCK.>
NO Replace piston
Check the wear condition of inside of piston and hammer
→
assembly and
O-ring.
greasing.
↓
OK
<CHECK STRIKER.>
NO Replace spindle
Check the smooth action of striker.
→
assembly.
↓
OK
<CHECK INTERMEDIATE SHAFT ASSEMBLY.>
NO Replace
Check the wear condition on tooth for change gears.
→
intermediate shaft
assembly.
Does not drill.
<CHECK BEARING.>
NO Replace H/D
→
Check the condition of bearing for H/D handle.
→
handle.
↓
OK
<CHECK O-RING.>
NO Replace spindle
Check the wear condition for O-rings assembled with
→
assembly.
striker.
↓
OK
<CHECK RECIPROCATION BEARING.>
NO Replace
Confirm the coming and going operation when rotating the
→
intermediate shaft
intermediate shaft with DRILL mode.
assembly.
It is OK if the reciprocation bearing does not operate.
↓
OK
<CHECK STRIKER.>
NO Replace spindle
Check the smooth action of striker.
→
assembly.
Does not change
<CHECK BEARING.>
NO Replace H/S
the speed.
→
Check the condition of bearing for H/S handle.
→
handle.
↓
OK
<CHECK INTERMEDIATE SHAFT ASSEMBLY.>
NO Replace
Check the wear condition for both change gear “H” and "S".
→
intermediate shaft
assembly.
7
EY6813-U1
