Lukas SC 557 - Manual (Page 32)

32
10.3.5 Changing or tightening hoses
Hoses of the pressure and/or return pipe leaks or hoses are defective. Tighten the hoses on
the safety valve.
(Please note! Observe torque of M
A
= 40 Nm!)
REMARK when using mono-couplings:
If you want to change the hoses, you have to dismantle the mono-couplings.
CAUTION (by usage of mono-coupling-system)!
Take care that the port ‘T’ of the rescue tool is always connected to the port ‘T’
of the mono-coupling.
CAUTION (by usage of quick-disconnect-coupling-system)!
The return hose, which is screwed onto the port “T” of the rescue tool, must be
equipped with a quick-disconnect-coupling (male) always.
However the supplying hose line must be equipped with a quick-disconnect-
coupling (female).
Procedure:
1. Loosen the 2 B screws in the handle sleeve
with quick-disconnect protective sleeves C
(hexagon socket)
2. Remove handle sleeve A and tighten screwed
connection. If necessary, renew seals.
3. Dismantle hose D and sealing ring E. (There
is no need to carry out this point if the hoses
are just being tightened).
4. Screw the hose with sealing ring back on.
Please ensure that the insulating washer F is
on and correctly assembled.
5. Tighten the hose connection on the safety valve.
(Please note! Observe the necessary torque of M
A
= 40 Nm!)
6. Then replace handle sleeve, protective sleeves and screws, tighten (Torque: 5Nm) and
secure it with threadlocking fl uid (e. g. LOCTITE 243).
B C
D E F
assemble
dismantle
A