T00122GB
7
DESCRIPTION
Disassembly
1. Tool holder/Cylinder housing
Remove pin. Remove supplementary handle with holder spring from tool holder. Remove cheese head
screw. Remove tool holder, tool holder bushing, intermediate gear and intermediate plate. Remove cylinder
housing with drive shaft from crankcase. Remove percussion piston.
2. Crankcase
Access to rotor circlip : Remove hexagon screws, take bearing cover and crank mechanism out of crankca-
se.
3. Disassembly of handle
Remove cheese head screws and slotted screws. Remove handle half.
4. Motor
Access to carbon brushes: Remove self-tapping screws remove cover. Take both carbon brushes out of
brush holder. Access to stator pack and rotor: Remove cheese head screws, remove bearing bracket from
crankcase. Remove self-tapping screws, then remove stator pack . After that pull out protection sleeve. Re-
move circlip and force out rotor.
Assembly
For assembly proceed in the reverse order to dismantling. The following has to be observed in particular:
* All parts must be carefully cleaned and checked. Grease bearings, crank mechanism and percussion sy-
stem with special grease (see technicla data).
* Clean front surfaces of cylinder housing and crankcase and seal with Omni Visc, model 1002.
* Use Omnifit 230L to glue outer race of deep groove ball bearing.
* After completion of any kind of repairs, test-run with increasing load.
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