EFA Z079, Operating And Maintenance Instructions, Sparepart List

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Schmid & Wezel
D75433 Maulbronn,
E + P
The cutter is not
closing when
the valve lever
is operated.
Pump is running
10.The nipple (39) at the
hydraulic return hose is not
properly connected. Oil
flow is blocked at the
coupling (33) of the cutter.
Only pneumatic unit:
Switch off pump.
Electric and pneumatic unit:
Release oil pressure in the return
line by removing the coupling
(33). Reconnect return hose
properly.
11. Seals (parts 9, 10.13, and
14) are defective
Replace seals.
12.Blade (15) is jammed see chapter 4.1 "Replacement of
blade" (page 6)
13.Hydraulic fluid level too low Refill fluid (see chapter 6.3.1
"Hydraulic unit" (page 9))
Valve bolt (23)
is not operated
when the valve
lever (27) is
pressed. 14.Valve bolt is defective Replace valve bolt (23).
15.Valve blocked by dirt
Remove valve bolt (23) and
clean it.
The cutter is no
opening when
the valve lever
(27) is released.
Pump is running
16.see 10 -12 see 10 – 12.
17.Valve bolt (23) is jammed
and does not return to its
initial position
Remove and check valve bolt
(23).
18.Piston (11) is loose or
defective
Remove and check piston (11).
Oil escapes at
the piston rod
(2)
19.Piston guide is defective
(7)
Remove and check piston guide
(7).
20.Piston rod is defective (2) Remove and check piston rod
(22).
Table 1: Troubleshooting