Engine Compression
- Run engine until operating temperature is reached. Remove glow plugs and disconnect fuel cut-off solenoid at injection pump.
- Install Glow Plug Adapter (5634) into No. 1 cylinder. Connect Diesel Engine Compression Tester (19-00001) to the adapter. DO NOT add oil to cylinders. Crank engine at least 6 revolutions and take reading.
- Repeat test for each cylinder. If pressures are not within limits, repair components as required.
CAUTION:
Disconnect the glow plug harness (Blue/Red Stripe) from engine wiring harness to prevent shorting terminal leads when ignition is turned on.
CAUTION:
DO NOT operate engine with fuel conditioner by-passed. Destruction of injection pump will result.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | 22.7:1 | |
| Compression Pressure (at 200 RPM) | ||
| Standard | 427 psi (30 kg/cm2 ) | |
| Limit | 384 psi (27 kg/cm2 ) | |
| Pressure Variation (Max.) | 43 psi (3.0 kg/cm2 ) | |