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Compression, Check
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Engine at operating temperature (oil temperature >= 80
°C). Use compression recorder up to 40 bar.
 Remove
Remove injection lines – see operation "Injection Lines,
Remove and Install".
Remove sheathed glow plugs – see operation "Sheathed glow
plugs, remove and install".
Disconnect wiring harness connector from fuel cutoff solenoid
valve.
Disconnect wiring harness connector (1) from pre-heater
relay.
Install
Install Adapter KM-488 (2) in tapped hole in sheathed glow plugs
– tightening torque 22 Nm / 16 lbf. ft. Connect compression
recorder to Adapter KM-488.
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Caution
Do not allow oil or grease to enter the cylinder that is being
tested, since this may destroy the compression recorder.
Inspect
Actuate starter for approx. 4 seconds with throttle valve fully
open – minimum engine speed 300 rpm. This procedure is to be
repeated for all cylinders.
The pressure difference between the individual cylinders should
not exceed 100 kPa (1 bar).
Remove
Remove compression recorder from Adapter KM-488.
Install
Connect wiring harness connector to pre-heater relay.
Connect wiring harness connector to fuel cutoff solenoid valve
– tightening torque 2.5 Nm / 1.8 lbf. ft.
Install sheathed glow plugs – see operation "Sheathed glow
plugs, remove and install".
Install injection lines – see operation "Injection Lines,
Remove and Install".
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