John Deere — Check Engine Oil Pressure
Testing & diagnosis · Lubrication system
From a John Deere service manual — check it applies to your exact model before use.
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Procedure
- Warm up engine to allow lubricating oil to reach operating temperature
- Attach pressure gauge
- At 93°C (200°F) operating temperature, compare gauge pressure with specification at 800 rpm and at rated speed
- If pressure does not meet specification investigate cause
Tools required
- FKM10002 or JT05470 Universal pressure test kit Amazon
- Gauge with reading range 0—600 kPa minimum Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- At 800 rpm 100 kPa (1 bar; 15 psi)
- At rated speed (1500 or 1800 rpm) 275 kPa (2.75 bar; 40 psi)
- At rated speed (more than 1800 rpm) 350 kPa (3.5 bar; 50 psi)
Source: John Deere 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.