1 689 989 087 2018-07-24| Robert Bosch GmbH
Product description | CRI/CRIN 848H | 63
en
3.6.10 High-pressure hose 1 680 712 325
The high-pressure hose 1 680 712 325 (color: red) con-
nects the distributor rail to the high-pressure rail
(220 MPa) of the tester set CRS 845H.
i For connection to a 180 MPa high-pressure rail,
use must be made of the high-pressure hose
1 680 712 227 with the adapter 1 681 032 094 in-
stead of the high-pressure hose 1 680 712 325. The
adapter 1 681 032 094 is available separately.
458781-6Pal
1 680 712 2..
MD 25 - 30 Nm
1 680 712 2..
MD 25 - 30 Nm
4
3
FD: 2008-10FD: 2008-10
Fig. 15: High Pressure Hose 1 680 712 325
1 Hose fitting with union nut
2 Name plate
3 Order number of high-pressure hose
4 Permissible tightening torque
5 Date of manufacture of high-pressure hose
! 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 rail / high-pressure pump. The mini-
mum bending radius of r = 200 mm must be ob-
served. Small bending radii reduce the cross-section
of the high-pressure hose. The bending radius
should not start at the fitting holder but rather ap-
prox. 20 mm away from it.
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
3.6.11 Hose line for return quantity
i The return quantity hoses are included in the parts
set 1 687 016 035 and are only required for connect-
ing the tester set CRI/CRIN 848H to the EPS 815.
The return quantity hose connects the injector return to
the KMA.
458804-4Pal
2, 4...12
A ... F
23
5
Fig. 16: Hose line for return quantity
1 O-ring 1 680 210 110
2 Barb nipple1 683 386 104
3 Terminal designation (A, B, C, D, F)
4 Terminal designation (2, 4, 6, 8, 10, 12)
5 Quick-release coupling
3.6.12 Hose line for injection quantity
i The injected quantity hoses are included in the parts
set 1 687 016 035.
The injected quantity hose connects the injection
chamber to the CRI/CRI piezo injected quantity connec-
tion on the EPS 708 or the "IN" connection of the heat
exchanger on the EPS 815.
! Flow direction (Fr) must be noted before connect-
ing.
A ... F
1 ... 6
458804-10
Fig. 17: Hose line for injection quantity
1 Heat exchanger connection
2 Terminal designation (1, 2, 3, 4, 5, 6)
3 Nonreturn valve with flow direction arrows
4 Terminal designation (A, B, C, D, E, F)
5 Injection chamber connection
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