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11.3.5 Quick-disconnect couplings
The quick-disconnect couplings must be replaced if:
- there is external damage,
- the locking does not function,
- hydraulic fluid continues to leak in the coupled/uncoupled state.
WARNING/CAUTION!
Never repair couplings: they must be replaced by genuine HURST parts!
During assembly tighten the union nuts on the hose line to a torque of M
A
= 35 Nm.
Procedure:
1. Loosen the union nuts on the hose line and remove the coupling.
2. Position the new coupling and tighten the union nut on the hose assemblies to a torque of
M
A
= 35 Nm.
ATTENTION!
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 supply hose line must be equipped with a quick-disconnect-
coupling (female).
ATTENTION!
Ensure that connection “T1”/"T2" on the pump block
is always connected to connection “T” on the mono-coupling.
4. Position the new coupling and tighten the union nuts on the hose assemblies to a torque
of M
A
= 40 Nm and push the kink-protection of the couplings back.
5. The hydraulic fluid tank must be refilled and the power unit vented.
Summary of Contents for P 630 SG
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