Maintenance
2722−1/A1
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
1/ 8
Tools: Key to Illustrations:
1 Protection cap 94271 1 Injection valve 14 Nozzle body
1 OBEL test bench 94272 2 Allen screw 15 Retaining sleeve
1 Connecting piece 94272b 3 Spring plate 16 Snap ring
4 Cup spring packet 17 Dowel pin
5 Nozzle holder 18 Dowel pin
6 Collar nut 19 Cylinder cover
7 Spring tensioner 20 Support
8 Nozzle tip 21 HP hose
9 O-ring 22 Receiver
10 Tappet 23 Dowel pin
11 Retaining nut 24 Spring cage
12 Compression spring
13 Nozzle needle LF 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 6/8..................................
8. Arrangement of cup spring packet 7/8......................
9. Fitting an injection valve in cylinder cover 7/8...............
10. Protecting a nozzle tip 8/8..................................
11. Storage and handling of injection valve 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, a clean
additive-type crankcase (system) oil of the SAE 30 viscosity grade (for additional
data see 0750−1 ’System oil’ in the Operating Manual) can be used for testing
instead of the above mentioned fluids.
Injection Valve
Checking, Dismantling, Assembling and Adjusting
2013-08
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