Solé, S.A. C-243 b, km 2 · 08760 Martorell (Barcelona) ·Tel. +34 93 775 14 00 · www.solediesel.com · [email protected]
26
Marine Diesel gensets. Operator’s Manual.
Systems and scheduled
maintenance
Maintenance task. Compression pressure inspection
Start by:
1.
Make sure the genset oil level, air cleaner,
starting motor and battery are well-
conditioned.
2.
Start the genset and allow it to warm up
thoroughly, until 50ºC or more coolant
temperature.
Measure the compression pressure on all cylinders:
1.
Remove the injection nozzle from the cylinder head where the compression pressure
is to be measured.
2.
Attach the compression pressure gauge.
3.
Disconnect the stop solenoid connector (the fuel supply shut off) and crank the
genset by means of the starter and read the compression pressure gauge indication
when the genset is running at specified speed.
4.
If the compression pressure is lower than repair limit, check the genset parts
affected.
-
It is not a good practice to measure the compression pressure on only few cylinders and
presume the compression on the remaining cylinders.
-
Compression pressure varies with genset speed. Check genset speed when measuring the
compression pressure.
-
The compression pressure will be slightly higher in a new or overhauled genset due to new
piston rings, valve seats, etc.
Model
Genset speed
Compression pressure
Repair limit
29 GSC / 32 GSAC / 35 GTC / 40 GTAC / 45
GTC / 54 GTAC / 50 GTC / 60 GTAC / 68 GTC
/ 84 GTAC
300 rpm
2,94 MPa
(30 kgf/cm
2
)
2,64 MPa
27 kgf/cm2
