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Kango K 350 Repair Instructions

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Summary of Contents for Kango K 350

  • Page 2 Repair Instructions PAGE K 350 Important! Before carrying out any repairs, the hammer should be checked for electrical safety and for mechanical performance. For electrical safety the hammer should be placed on a non-conductive surface which is either of a wooden construction (with the mains supply disconnected) which contains no metal parts or a bench which is insulated by a rubber mat.
  • Page 3 Repair Instructions PAGE K 350 Dismantling the Remove the rubber cover (87). SDS-Plus-Recep- Remove the spacer (60). tion Remove the sliding sleeve (87) and the re- taining ring (64). Depress the support plate (63) and press out the ball (62) with the aid of a screw- driver or remove it with a magnet.
  • Page 4 Repair Instructions PAGE K 350 Dismantling the Removing the rear thrust bearing assem- 51 52 spindle bly: Lever off the spiral clip (53) with a (removing the screwdriver. Remove the thrust bearing outer parts) assembly in the following component parts: –...
  • Page 5 Repair Instructions PAGE K 350 Dismantling Press the following parts from the the spindle spindle (46): (inner parts) – backing flange (56) – sleeve (54) – snap die (57) – sleeve (59) Remove the O-rings (87). 09/97 Removing the Pull out the bearing housing (70) or loosen...
  • Page 6 Repair Instructions PAGE K 350 Removing the Remove the locking washer (67). angle drive Remove the shaft (82) together with the discs (72 & 73) and the ring (71). (If nec- essary by hitting the gear box lightly with a plastic hammer).
  • Page 7 Repair Instructions PAGE K 350 Removing the Unscrew the cable collar (17). 22/23 electrical parts Remove following parts: – switch (22/23) – capacitor (24) – cable (1) – wire (18/19) Removing Remove the bolts (85) and pull out the the motor motor (if necessary, hit the motor hous- ing (27) lightly with a plastic hammer).
  • Page 8 Repair Instructions PAGE K 350 Removing and Remove the seal ring (21). dismantling the Lever off the bearing cover (20) and re- armature move the silicone buffers (12). Pull out the entire armature (74). Press off the gear wheel (82).

  • Page 9: Maintenance

    Repair Instructions PAGE K 350 Maintenance General For best performance hammers should be serviced at regular intervals, any indication that the hammer is not performing as specified should be investigated to prevent any adverse damage occurring. ALL SEALS, GASKETS, GREASE OR OTHER PARTS DEEMED NECESSARY FOR SERVICING ARE IN THE SERVICE KIT.

  • Page 10: Electrical Testing

    Repair Instructions PAGE K 350 ELECTRICAL TESTING Electrical tests Before assembly all electrical parts MUST be checked for safety, and that they conform to specification. Testing the Supplementary Insulation Armature Apply 1250 volts rising to 2500 volts A.C. between laminations and spindle (A). See dia- (Flash Testing) gram.
  • Page 11 Repair Instructions PAGE K 350 Assembly Mounting Fit the centering ledges (16) to the field the field coil (10). Caution: Care must be taken to ensure the correct positioning of the centering ledges (16) (see illustration). Insert the field coil (10) into the field hous- ing (7) (lightly hit the field housing with a plastic hammer).
  • Page 12 Repair Instructions PAGE K 350 Assembling the Connect all cables to the switch (see illus- electrical parts tration and wiring diagram). Push the field cables (18,19) through the handle (see illustration). Insert the switch (22), the capacitor (24). Note: Install the field supply cables (A) below the mains cable near the cable col- lar (17).
  • Page 13 Repair Instructions PAGE K 350 Assembling the Insert the support ring (71). angle drive Grease the shaft (82) and insert into the gear box (27) by turning it slightly. Insert the disks (72 &73). Note: Depending on the tolerance of the bearing, two or three disks (72 &73) are...
  • Page 14 Repair Instructions PAGE K 350 Mounting the Insert the two disks (42) and the bolt (41) back gear shaft into the cylinder (40). 08/96 08/96 and the cylinder Replace the hoop (43) with two wash- ers (42). Insert the rolls (87)/(90) into the back gear shaft one after the other and fix it with grease.
  • Page 15 Repair Instructions PAGE K 350 Assembling the Mount the cup springs (47) (see illustra- spindle tion). (mounting the Mount the clutch (the stop washer (48) outer parts) with indentations against the toothing of the spindle gear (49)). Fit the spring ring (50) and press it on (against the pressure of the cup springs (47)).
  • Page 16 Repair Instructions PAGE K 350 Mounting the Insert the spring (61) and the support SDS-plus plate (63). Reception Depress the support plate (63) and insert the ball (62). Fit the retaining ring (64) and the sliding sleeve (87). Fit the spacer (60).

  • Page 17: Fault Finding

    Repair Instructions PAGE K 350 WARNING After completed assembly, the machine should be submitted to a flashover test with 4000 volts. It is advisable to run the machine with half the rated voltage to make sure that the brushes are inserted correctly.