Maintenance
2722
−
1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
6.
Adjusting the opening pressure
⇒
Install the injection valve in the test bench as described in section 2.
⇒
The opening pressure of the injection valve can be set by adjusting spring ten-
sioner 7.
⇒
For readjusting the opening pressure, compression spring 12 must first be
completely released by means of spring tensioner 7.
⇒
Then operate the valve test bench and tighten the spring tensioner simulta-
neously until the required opening pressure is reached.
⇒
Check the injection valve as described in section 2.
⇒
After adjusting the opening pressure, tighten collar nut 6.
Remark:
An opening pressure of 375 bar corresponds with reference dimen-
sion ’x
1
’ = 33.05 mm .
7.
Replacing a nozzle tip
Ensure that always specified nozzle tips are used in accordance with the IMO
technical file of the engine or the shoptest protocol.
If the nozzle tip 8 should be dismantled only, it is sufficient to remove the retaining
sleeve 15.
7.1
Removal
⇒
Using two screw drivers inserted between both re-
cesses in retaining nut 11, press snap ring 16 out of
the groove in the retaining nut, whereby the retain-
ing sleeve can be withdrawn.
Watch that the snap ring does not jump off unex-
pectedly.
⇒
Remove nozzle tip.
7.2
Fitting
For fitting it is advantageous to clamp the injection
valve on its flange into a vice (nozzle body 14 pointing
upwards), and then proceed as follows:
⇒
Clean all parts with clean diesel oil or kerosine and
blow them out with compressed air.
⇒
Place nozzle tip on the nozzle body whereby the
position is assured by dowel pin 17.
⇒
Put retaining sleeve 15 over the nozzle tip, and
press snap ring 16 into the groove of the retaining
nut by means of the screw drivers.
After replacing a nozzle tip the injection valve must be
checked and judged according to sections 2 and 3.
C
16
14
5
15
11
8
004.072/98
SCREW DRIVER
17
2013-08
Injection Valve: Checking, Dismantling, Assembling and Adjusting
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