High-Pressure Hose (Special Accessory); High-Pressure Hose 1 680 - Bosch CRI/CRIN 848H Manual Original

en 62 | CRI/CRIN 848H | Product description
3.6.9

High-pressure hose (special accessory)

i
The high-pressure hose, the test pressure line
1 680 750 123 and the adapter nuts are included in
the parts kit (special accessory). The parts kit is not
part of the CRS 845H test set.
The high pressure hose 1 680 712 324 connects the
common-rail pump to the high pressure rail.
FD: 2010-09
2
1
Fig. 13: High Pressure Hose
1 Adapter nut
2 Date of manufacture of high-pressure hose
3 Order number of high-pressure hose
4 Permissible tightening torque
5 Name plate
6 Hose fitting with union nut
!
Replace high-pressure hoses (operating pressure
greater than 60 bar) after 3 years (refer to date of
manufacture on high-pressure hose) even if there
are no apparent defects of relevance to safety.
Heed the following on connecting the high-pressure hose:
R
Before connecting, clean the sealing cone on the
high pressure hose and on the high pressure rail/
high pressure pump.
R
The minimum bending radius of r = 200 mm must be
observed. Small bending radii reduce the cross-sec-
tion of the high-pressure hose. The bending radius
should not start at the fitting holder but rather ap-
prox. 20 mm away from it.
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1 689 989 087 2018-07-24
3
1 680 712 ...
M=25 - 30 Nm
4
1 680 712 ...
FD: 2010-09
M=25 - 30 Nm
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5 2 6
R
It must be ensured that the high-pressure hose does
not come into contact with other hoses or objects
during operation.
R
Always observe the specified tightening torque on
connection. Never re-tighten the screw connection
in the event of a leak.
Permitted tightening torque: 25 – 30 Nm
Permissible operating pressure: Max. 250 MPa
Permissible operating medium: Test oil as per ISO 4113
Permissible operating temperature: 20°C – 100°C
The high-pressure hose has a replaceable adapter nut
on one side (Fig. 13, item 1). The adapter nut (Fig. 13,
item 1) can be changed depending on the thread size of
the high-pressure outlet on the common rail pump. In
use, the adapter nut is screwed onto the high-pressure
hose and tightened. Three adapter nuts for the follow-
ing thread sizes are included:
Adapter nut
1 683 345 065
1 683 345 052
1 683 345 053
The bent test pressure lines 1 680 750 123 can be used
to connect the high-pressure hose to inaccessible high-
pressure outlets. To connect the test pressure line to
the high-pressure hose, the adapter nut 1 683 345 053
(see Fig. 14, item 3) must be used.
1
2
Fig. 14: Test pressure line 1 680 750 123
1 Adapter nut
2 Test pressure line 1 680 750 123
3 Reduction 1 683 345 053 (M16x1.5 – M18x1.5)
4 High-pressure hose
Thread
M12x1,5 – M18x1,5
M14x1,5 – M18x1,5
M16x1,5 – M18x1,5
FD: 2010-09
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Robert Bosch GmbH