Repair; Change Gaskets - Blitz DUPLEX S2 Operating Instructions Manual

9. Repair

9. Repair

Repair work only to be carried out by authorized
staff with the equipment switched off and secured
.

Observe safety precautions in chapter 8.2.

All repair work is to be recorded ( form "Special
safety check").

9.1 Change gaskets

Cause for defective seals can be for instance:

Damaged plunger rods

Lip seal wear through dirt

Ageing seal
After changing the gaskets
1.
Bleed lifting cylinder
2.
Check oil level
3.
Calibrate sensors
Change seal and scraper ring Ø180mm
(Illustration 25)
1.
Lower lifting cylinder completely.
2.
Turn off and secure equipment.
3.
Detach cross member (forklift, crane).
4.
Remove the 8 bolts (1) and detach flange (4).
5.
Change seal ring (3) and scraper ring (2).
6.
Replace O-ring (5) on flange.
7.
Attach flange (tightening torque bolts: Ma =
395Nm).
8.
Attach cross member (tightening torque bolts:
Ma = 560Nm).
Change seal and scraper ring Ø150mm (Illustra-
tion 26)
1.
Lower lifting cylinders to 50mm above floor lev-
el.
2.
Detach cross member (forklift, crane).
3.
Lower with Down button, at the same time
knock down plunger rod Ø150 carefully with
plastic hammer), until seal and scraper are
freely accessible.
24
25
117127 ● 07/2011