MAJOR MAINTENANCE
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2.2. Diagnosis and Remedy
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The following description summarizes the probable cause of and remedy for general failure by item.
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DE12TIS inspect the electrical parts problem with SCAN 200 and refer diagnostic manual.
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Immediate countermeasures should be taken before a failure is inflamed if any symptom is detected.
1. Engine Starting Impossible
Starting motor operation poor
Inspection of battery electorlytic
Iiquid amount & gravity
Normal
Too low
Inspection of starting switch
Normal
Inspection of starting relay
Inspection of magentic switch
Normal
Replace
Normal
Inspection of loose electric
wring & short
Normal
Starting motor
disassembly
Starting motor revolution
Engine
Inspect air cleaner
Normal
Polluted
Replace or
clean element
Check compression
pressure
Normal
Too low
Inspect of
other parts
Check valve
clearance
Normal Adjust
Check cylinder
head gasket
Replace
Normal
Engine disassembly
(valve assembly piston
cylinder liner etc.)
Fuel
Inspect amount of fuel
None
Replenish
Inspect fuel
injection
No injection
Continuous
operation after
air removal
Inspect
injection
timing
Inspect injection
nozzle (injection
pressure, injection
state etc.)
Injection pump
disassembly
Normal
Normal
Adjust
Normal
Normal
Inspect supply pump operation
Injection pump
dasassembly
Inspect fuel filter
Element polluted
Overflow valve poor
Replace
Air mixture in fuel
Retighten connection
parts. Replace gasket
Air removal
Continuous air mixing
Supply pump
disassembly
Normal
Inspect supply pump valve strainer
Normal
Clean
Replace
Repair
Replace
Repair
Replace
Repair
Replace
Repair
Replace
Retighten
Replace
Adjustment
Recharging
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