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127. Remove snap ring item 123 and draw out the complete output shaft item 113.
If necessary, continue to disassemble.
Connection of handle
Screw out connecting nipple item 78 and sound absorber item 82. Loosen screws item 76 and take off the
air and silencer connection item 75 as well as the spacer ring item 71. Pull the guide sleeve item 70 out of
the seat.
Assembly hint
Repairs should be executed by authorized professionals only and with assistance of the sectional drawing.
Re-assembly
Re-assemble after checking and replacing worn parts. It will be done essentially in the reverse order than
the disassembly. Lightly grease all parts to avoid falling apart during re-assembly. Remove any oil and resin
residue from the rotor slots. The vanes should fit easily into the rotor slots.
Information on motor running
If the motor does not at all turn after re-assembly, light tapping with a rubber hammer on motor housing is
helpful.
The rotor places and comes into a free-wheel position between the end plates. If not, check lengths of the
rotor, cylinder bushing and vanes.
a. The vanes shall neither jut out laterally of the rotor slots, nor project on the rotor.
b. Cylinder bushing has to be 0.08 mm to 0.10 mm longer than the rotor.
After finishing of re-assembly make functional gauging of the pneumatic hammer drill. For this refer to the
technical specification of the operation and maintenance manual.
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