Wartsila RT-flex50-D User Manual

Maintenance
2722−1/A1
RT-flex50-D
Wärtsilä Switzerland Ltd
1/ 8
Tools: Key to Illustrations:
1 Protection cap 94271 1 Injection valve 15 Snap ring
1 OBEL test bench 94272 2 Allen screw 16 Dowel pin
1 Connecting piece 94272b 3 Spring guide 17 Dowel pin
1 Adjusting disc 94280 4 Cup spring (spring packet) 18 Dowel pin
1 Adjusting disc 94280a 5 Nozzle holder 19 Support
6 Intermediate piece 20 HP hose
7 Nozzle tip 21 Receiver
8 Shim ring 22 Dowel pin
9 Tappet 23 Spring cage
10 Retaining nut 24 Circlip
11 Compression spring 25 Shim ring
12 Nozzle needle 26 Shim
13 Nozzle body
14 Retaining sleeve FL Leakage fuel
Overview
1. General 1/8...............................................
2. Checking an injection valve 2/8.............................
3. Judging an injection valve 3/8..............................
4. Dismantling an injection valve 4/8..........................
5. Assembling an injection valve 4/8..........................
6. Adjusting the opening pressure 6/8.........................
7. Replacing a nozzle tip 7/8..................................
8. Protecting a nozzle tip 7/8..................................
9. Assembling a spring cage 8/8..............................
10. Fitting an injection valve in cylinder cover 8/8...............
1. General
For checking, dismantling, assembling and adjusting the injection valve, test
bench 94272 as well as test & calibration fluid has to be used (e.g. Shell Calibration
Fluid S.9365) complying with the data according to the following table:
Physical characteristics for test & calibration fluid:
Kinematic Viscosity ASTM D445
at 40 _C
mm
2
/s 2.6
Density at 15 _C
kg/m
3
ISO 12185 827
Pour Point
_C
ISO 3016 −27
Remark: Clean diesel oil (gas oil) can be used if no calibration fluid is available.
The use however is not recommended, if the injection valve will be stored and not
directly installed on the engine (corrosion reasons).
On some injection valves the leakage flow amount might be bigger than on others.
In case of the test bench flow is not sufficient to open the nozzle needle, hydraulic
oil with a kinematic viscosity of 7...10 cST at 20 _C can be used for testing instead
of the above mentioned fluids.
I
njection Valve
C
hecking, Dismantling, Assembling and Adjusting
2011-12

Wartsila RT-flex50-D Specifications

General

Brand	Wartsila
Model	RT-flex50-D
Category	Engine
Language	English