BGU GSB 242, Operator'S Manual

Page: 12 / 32

- 12 -
7. Repairs and maintenance
At work end make sure to check presence of eventual shred rests in the machine and clean them.
When operating PTO shredders GSZ 242 make sure that the PTO arrangement is duly shielded before
starting.
Before performing any maintenance/repair work on the machine, make sure that the machine is fully
disconnected (unplug the machine or switch the tractor off).
Should your electric shredder fail to start when first switching the engine on, check up the switch fuse. If
fuse and switch are OK but shredder keeps failing to start, so consult your electrician for complete check
up and repair of the electric system
Do not self grind the lateral cutting blade. For this operation help of a skilled mechanic is required.
7.1 Rotor hammers replacement
The steel hammer on the rotor can be used twice.
Slightly rounded hammer profile will immediately lead to a poor shredding quality. For this reason hammers
must be regularly grounded.
To regrind perform hammers removal as below:
1. Lift the lateral cover (Service-Cover) on top of the driving pulley after releasing of 2 hex nuts,
2. Remove the upper cover on the ejection opening,
3. Manually turn the drum till the hammer shaft becomes visible through the opening,
4. Release the countersunk head screw on the hammer shaft and pull the screw fully out,
5. Remove the hammer shaft from one side,
6. Pull hammers and spacers off the shaft and fit them back having care to invert their side around.
Take good care of the spacers, nuts and screws while dismounting the hammers.
IMPORTANT: assemble the hammers and bushings back on the chipper in the order as they were
taken out
7. After inverting the hammer side around, secure the hammer shaft using the same countersunk head
screws,
8. Keep turning the rotor to the next hammer and repeat the same procedure as before for all hammers,
9. When all hammers side has been inverted, reassemble the upper cover and secure the two nuts,
10. Secure the upper cover, the upper ejection pipe and the ejection chute
Make sure all screws are duly secured and tightened.
ATTENTION: when both hammer sides are worn out REPLACE THE HAMMER completely. DO
NOT REUSE DULLED HAMMERS.
When pulling the hopper off for unwrapping or rotor maintenance reasons make sure that power is fully
disconnected from the shredder.
DO NOT LET THE SHREDDER RUN WITHOUT HOPPER ON.
For repair/maintenance of the gasoline engine follow separate instructions given by the engine manufacturer
and enclosed to these instructions.
8. Safety tips
Maintenance, installation, repair and cleaning works as well as shredder transportation may be
strictly performed when the unit is switched off and the rotor is still.