Replacing The Hose Coupling On The Pressure Control Valve Block; Replacing The Connection Fitting On The Pressure Control Valve Block - Bosch EPS 708 Repair Instructions

6.24 Replacing the hose coupling on the
pressure control valve block
i
Get a cloth ready for catching and mopping up cali-
brating oil.
i
To ensure sufficient working space when removing
and installing the hose coupling, we recommend
also removing the neighboring hose couplings.
1. Switch off the EPS 708 at the main switch.
2. Secure the main switch so that it cannot be swit-
ched back on.
3. Unplug the mains plug or disconnect from mains
electricity.
4. Lift the protective hood.
5. Disconnect the hose assemblies from the hose
couplings.
6. Remove the hose coupling (Fig. 90, item 1). When
loosening the hose coupling, hold the connection
fitting (Fig. 90, item 2) securely with a wrench. Do
not tighten the connection fitting further under any
circumstances.
1
2
Fig. 90: Removing the hose coupling
Robert Bosch GmbH
Repair | EPS 708 | 53
!
Always use a new sealing ring when installing the
hose coupling. The new sealing ring must be made
of the same material (fiber or copper) as the one
just removed. If a sealing ring of a different material
is used, the connection will not be tight because of
an incorrect tightening torque or the sealing ring will
be damaged by the connection fitting. The tighte-
ning torque (see Fig. 91) depends on the sealing
ring material (fiber sealing ring or copper sealing
ring).
max. 6 Nm 15 +2 Nm
1
Fig. 91: Tightening torque
1 Fiber sealing ring
2 Copper sealing ring
7. Screw in and tighten the hose coupling with sealing
ring. Observe the tightening torque.
6.25 Replacing the connection fitting on
the pressure control valve block
i
Get a cloth ready for catching and mopping up cali-
brating oil.
i
To ensure sufficient working space when removing
and installing the hose coupling, we recommend
also removing the neighboring hose couplings.
1. Switch off the EPS 708 at the main switch.
2. Secure the main switch so that it cannot be swit-
ched back on.
3. Unplug the mains plug or disconnect from mains
electricity.
4. Lift the protective hood.
5. Disconnect the hose assemblies from the hose
couplings.
en
2
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1 689 975 233 2018-05-08