Systems and scheduled
maintenance
Solé, S.A. C-243 b, km 2 · 08760 Martorell (Barcelona) ·Tel. +34 93 775 14 00 · www.solediesel.com · [email protected]
31
Marine Diesel gensets. Operator’s Manual.
Maintenance task. Injection pump inspection
The injection pump is adjusted at factory and should never be adjusted carelessly. Such
adjustment, whenever is required, shall be made by a Solé Diesel licensed service shop, since a
precision pump monitor and skill knowledge are required.
You must check:
-
The presence of exhaust smoke colour.
-
Procedure: quickly accelerate genset.
Criteria: no remarkably black smoke exhaust, and correct function of fuel cut-off solenoid
-
Any leaks at the body injection pump or fuel lines
Maintenance task. Injector inspection
To check the injection pressure of injectors
(opening pressure) you have to follow these steps:
1.
Remove nozzle and washer.
2.
Install the injection nozzle on the tester. Slowly
operate the tester handle full strokes to bleed
(remove) air from the pipe and nozzle.
3.
Make a slow increase in pressure by operating the
tester handle at a speed of more than one stroke per second while observing the pressure gauge.
4.
The pressure gauge reading will slowly increase and, when the nozzle starts discharging fuel, it
will go down fast. Take the gauge reading right then as the injection pressure.
5.
To adjust the injection pressure, increase or decrease the amount of shims fitted to the nozzle
holder.
6.
Look at the orifice discharge pattern (shape of discharge) when
fluid begins to flow through the injection nozzle. The discharge
must be finely and uniformly atomized. Any change is an indication
of a bad nozzle.
7.
If the nozzle is bad, remove the tip from the nozzle and wash needle valve and body in clean
washing solution.
And if the nozzle is still bad after the tip has been washed, replace the tip.
8.
When installing the new tip, remove synthetic resin film from the tip and slide the needle valve in
the body in clean Diesel fuel to wash off inhibitor completely
9.
The washer shown on figure must be replaced.
Model
Injection pressure
29 GSC / 32 GSAC / 35 GTC / 40 GTAC DNV
11,77 MPa (120 kgf/cm
2
)
45 GTC / 54 GTAC DNV
11,77 MPa (120 kgf/cm
2
)
50 GTC / 60 GTAC DNV
11,77 MPa (120 kgf/cm
2
)
68 GTC / 84 GTAC DNV
12 MPa (122,36 kgf/cm
2
)
