Lombardini — Checking oil pressure
Testing & diagnosis · Lubrication system
From a Lombardini service manual covering: 25LD330-2, 25LD425-2, KD 425-2. Check it applies to your exact model before use.
Procedure
- Remove bolt from crankcase hole and fit pressure gauge 0-10 kg/cm².
- Start engine, accelerate to 3000 rpm, wait for oil temp 70-80°C.
- Pressure reading must be between 2.5 and 4 kg/cm².
- Reduce engine speed to minimum; pressure should not fall below 1 ÷ 1.5 kg/cm² at 80°C.
Tools required
- Pressure gauge 0-10 kg/cm² Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 2.5-4 kg/cm² at 3000 rpm
- 1-1.5 kg/cm² at idle
Source: Lombardini service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.