Repair
Disassembly
Disassembly and re-assembly should be done according to the sectional drawing only.
Observe the safety instructions of the operation and maintenance manual.
Gearbox head
Remove protective cover item1. Loosen socket head screws item 2 and remove gear part 2 item 9. Pull out
of gear part 1 item 28 inner parts such as: roller guide item 120 with bearings, roller holder item 124 with
bearings, bevel gear item 24, axial thrust bearing item 25 and axial disc item 26. Remove supporting shoe
item 15 from gear part 2 item 9. Undo screws item 6 and take out gate item 7 and sealing item 8. Screw out
spring pressure piece item 14, pull out lift rod item 5, remove cylinder pin item 10, needle bearing item 11
and sliding roller item 17.
Motor
Undo screws item 31 and draw off complete handle. Screw out motor cover item 17 and take out
o-ring item 16. Knock out inner motor parts. Press out all inner parts of the motor. By tapping with a rubber
mallet on end plate item 3, cylinder bushing item 7 can be removed. Draw off end plate
item 3 with bearing item 4 and spacer item 6 from rotor item 10, remove cylinder bushing item 7, as well as
vanes item 11. Separate pinion item 20 from rotor and remove end plate item 12 with bearing from rotor.
Remove spacer item 15 from the bearing seat. Pull sound absorber item 2 out of motor housing item 1.
Handle
Screw out nipple item 29 with reducing nipple. Take out compression spring item 28, steel ball item 27, pin
item 25 and sealing ring item 26. Knock out double notched taper pin item 24 and remove valve trigger item
23. Replace bushing item 32, guide sleeve item 33, pressure spring item 34 and locking slide item 35 only
when defective. Bushing item 32 and guide sleeve item 33 are glued in and can be loosened only after
heating.
Re-assembly
Re-assembly is performed basically the same as disassembly, but in reverse order.
Mind especially the following items!
Handle
Control function after assembly. Look out for leaks and correct pin guide on the valve trigger. Check the
locking bolt.
Motor
If bearings items 4 and 13 in the end plates items 3 and 12 were replaced, the spacing of the motor has to
be redone. For that, new spacers items 6 and 15 are used. Press bearings in the end plates backlash-free in
direction to snap ring in order to find out dimension of spacer. The end play between rotor and end plates
should be approx. 0.04 mm per side, to ensure free running of the rotor.
Make functional gauging of motor with handle by checking free speed (approx. 15,000 rpm at an operating
pressure of 6 bar).
Gearbox head
Build-in lift rod item 5 in correct position. Check the complete assembled bevel gear
item 24 with bearings and bolts for easy running. Attach roller holder item 124 completely.
Test roller guide for easy movement. Screw together gear part 1 and gear part 2 and pull over protective
cover. Screw components „Motor with Handle “ and „ Gearbox head“.
Fill the gear with grease, e.g. Calypsol-D8024 (approx. 80 g).
After completion of re-assembly make following functional gauging: Cutting capacity, Power,
start reaction
