约翰迪尔John Deere发动机冒过量的黑色或灰色烟的故障原因分析诊断与处理方法强鹿配件

1 E5 - Preliminary Check

Before using this diagnostic procedure:

1.   Ensure fuel quantity and quality are OK.

2.   Ensure engine is not excessively loaded.

3.   Ensure air filter is not restricted or  plugged.

Problem not found:

GO TO  2

Problem found: Repair and retest.

– – –1/1

2 Intake and Exhaust Restriction and Air Leak Test

Check for intake and exhaust restrictions and air leaks. See all of the   following:

·   CHECK FOR INTAKE AND EXHAUST RESTRICTIONS (CTM100, Section 04, Group 150)

·   CHECK FOR INTAKE AIR LEAKS (CTM100, Section 04, Group  150)

·   CHECK FOR EXHAUST AIR LEAKS (CTM100, Section 04, Group  150)

No restrictions or leaks found:

GO TO  3

Restrictions or leaks found:

Repair or replace components as necessary.

– – –1/1

3   Turbocharger Failure

Check for turbocharger failure. See TURBOCHARGER SEVEN-STEP INSPECTION in Section 02, Group 080 of CTM100.

No turbocharger failure found:

GO TO  4

Turbocharger failure found:

Follow appropriate repair procedure found in the above inspection in Section 02, Group 080 of CTM100.

– – –1/1

4

Valve Lash Test

Check valve lash. See CHECK AND INJECTOR PRELOAD in

AND ADJUST VALVE

Section 02, Group 020

ASSEMBLY of CTM100.

CLEARANCES

Valve lash on all valves within  specification: GO TO  5

Valve lash on one or more valves out of specification:

Adjust valve lash and retest.

– – –1/1

5 Cam to Crank Timing Test

Verify cam/crank timing is correct. See CHECK AND  ADJUST

CAMSHAFT-TO-CRANKSHAFT TIMING in CTM100, Section 02, Group 050.

Camshaft to crankshaft timing OK:

Ensure there are no engine mechanical problems.

If no other problems are found, see E3 - ENGINE DOES NOT DEVELOP

FULL POWER in this Group.

Camshaft to crankshaft timing not OK:

Adjust cam/crank timing. See CHECK AND ADJUST

CAMSHAFT-TO-CRANKS

TIMING in Section 02, Group 050 of CTM100, and retest.

– – –1/1