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]
22
Operator’s Manual
. Marine generator sets
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.
Model
Genset speed
Compression
pressure
Repair limit
8 GTC / 10 GTAC / 7GSC /
8 GSAC
250 a 280 rpm
2,84 a 3,14 MPa
(29 a 32 kgf/cm2)
2,45 MPa
25 kgf/cm2
/ 14 GTAC / 10 GSC /12
GSAC / 17 GTC / 20 GTAC
/ 14 GSC /17 GSAC /
290 rpm
3,14 MPa
(32 Kgf/cm2)
2,45 MPa
(25 kgf/cm2)
- 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.
Summary of Contents for 68 GTC
Page 2: ......
Page 75: ......
Page 80: ......
Page 81: ......
Page 82: ...U_GBAV_EN Revision 7 04 2019...
