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131
Mechanical Diagnosis
NOTE: This diagnosis guide applies to units equipped with TK486 engines. For major repair of TK486
engines, refer to Overhaul Manual, TK 50136.
Diagnosing Unit Conditions
Condition
Possible Cause
Remedy
Unit switch On; controller
display does not come on
Corroded battery cable connections
Clean and tighten
Batteries discharged
Charge or replace batteries
Fuse SI3 open (blown)
Check for short circuit and replace fuse
Defective On/Off switch
Check switch
Open circuit
Check 2, 2B, 2C and 8 circuits
Unit switch On (controller
display is On) but engine
does not crank
Batteries discharged
Charge or replace battery
Corroded battery connections
Clean and tighten
Defective starter relay or open circuit
Replace relay; check 2A, 8S, SR and
PSR circuits
Defective starter solenoid
Replace solenoid
Defective starter
Repair starter
Water in cylinders
Check for hydrostatic lock. Remove
injectors and turn engine slowly
Starter motor turns but
engine does not crank
Starter clutch defective
Replace
Engine cranks but fails to
start
Fuel solenoid not energized
Check fuse SI1, 8D and 8DP circuits,
fuel pull relay (RL1), and fuel hold relay
(RL2).
Fuel solenoid valve defective or stuck
Replace
No fuel or wrong fuel
Fill with proper fuel
Air cleaner clogged
Clean and refill oil reservoir on oil bath
air cleaner; or replace dry air cleaner
filter
Exhaust plugged
Clear exhaust system
Air heater defective
Replace defective air heater
Air in fuel system
Bleed air
Fuel pump defective
Replace pump
Incorrect timing
Adjust timing
Injection nozzles defective
Repair or replace nozzles
Injection pump defective
Replace pump
Compression low
Overhaul engine
Содержание SGCO 3000
Страница 4: ......
Страница 12: ...SGCO 3000 Genset Addendum 12...
Страница 14: ...Genset Model Features 14...
Страница 22: ...Service Guide 22...
Страница 32: ...Unit Description Features Options 32...
Страница 78: ...Operating Instructions 78...
Страница 86: ...Electrical Maintenance 86...
Страница 114: ...Engine Maintenance 114...
Страница 124: ...Alternator Operation and Diagnosis 124...
Страница 130: ...Structural Accessory Maintenance 130...
Страница 138: ...Index 138...
Страница 140: ...Electrical and SG Menu Flow Diagrams 140...
Страница 141: ...141 SGCO 3000 Wiring Diagram Page 1 of 1...
Страница 142: ...142 SGCO 3000 Schematic Diagram Page 1 of 1...