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the case. (Please contact with our authorized dealer to purchase, the part No 103).
Notice：There are 4 grooves in the aluminum head, Please fill the grease in all these 4 grooves
by 7.5 g in each, and total 30 g grease. (See Fig 5 and Fig 6)
6. Fill the 12 g oil in the cylinder; please make sure it is clean before filling. (See Fig 7)
7. Assemble back(See Fig 8)
a) Assemble the piston into cylinder, please make sure if the O-ring has been assembled.
b) Assemble the cylinder into aluminum head.
c) Tighten the 4 inner HEX head screws; be careful of no missing spring washer. If tighten
the screws by electrical or pneumatic driver, please check the torque of screw by 6 mm
wrench to make sure tightening properly.
d) If the conditional, can put glue on the screw and then screw in(repeat the step above C)
*Suggestion: All above operations to be carried out by our authorized service agent.
Maintenance and inspection
Before do any maintenance, ensure unplug the plug.
1. Inspecting the demolition hammer
Use a dull accessory, such as bull point, cutter, etc., will cause motor malfunction and
efficiency degraded. Replace with a new one when your accessory is abased.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that they are properly tightened. Any
loose should be tighten immediately, failure to do maybe cause serious hazard.
3. Inspecting the bit retainer
The retainer may become loose due to excessive use. Make sure the bit shank position is
hold securely, if any wear or damage is found, ask the authorized service people to maintenance.
4. Maintenance the motor
The motor is the heart of the machine, please avoid any damage to the winding, or any
water and oil to wet it.
5. Carbon brush replacements
Carbon brushes are consumable parts, when it becomes worn or "limit worn" it can cause
motor trouble, we use auto-stop carbon brush, it stopped automatically when carbon brush worn
out, at that time, replace a new couple of them as following procedure:
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