Capitulo 2. Antecedentes y Análisis del Estado del Arte
2.3 Fundamentación teórica
2.3.6 Lenguajes de programación
SHEET 1 CONT'D FROM
governor spring Check for broken
Replace governor spring, Not OK
OK
refer to paragraph 4.57. For MEP-531A, refer to next higher
level maintenance
refer to paragraph 4.52
Test for defective starter assembly. Apply 24 vdc to terminals S and C of starter solenoid (L5). Starter is defective if it does not turn
Contact next higher level
Operation Troubleshooting Diesel Engine Seizes During
maintenance to perform OK
Table 4-4. Diesel Engine Hard To Start Troubleshooting
Diesel engine hard to start
Remove and clean spark arrestor, refer
Drain fuel tank and all fuel lines. Replace fuel filter element, refer to paragraph
4.12.1. Service fuel tank
valve clearances, refer to Check intake and exhaust
Not OK Spark arrestor blocked
OK
Check fuel for contamination
Not OK OK
to paragraph 4.19.
Not OK OK
valve clearances, refer to Adjust intake and exhaust Inspect fuel injector, refer to
paragraph 4.12.3
OK Not OK
level maintenance Contact next higher
injector, refer to Replace defective fuel with proper fuel. Then bleed
air from fuel lines, refer to paragraph 2.7.c
paragraph 4.12.10
paragraph 4.12.10
Check governor regulator NO
Not OK
Diesel engine starts but
Engine STOP lever tripped fails to keep running
YES OK Not OK OK Replace O-ring, refer to paragraph 4.55 J2-B TB1-3 (MEP-531A) or L4 (R) TB1-2 and check continuity in wires With multimeter set for ohms,
J2-B TB1-4 (MEP-501A)
bracket installation, Adjust or replace bracket as necessary refer to paragraph 4.52
Not OK OK
level maintenance Contact next higher
defective wiring. Repair or replace
Check for missing or damaged oil strainer
O-ring, refer to paragraph 4.55 Test for defective
LOP switch (S1) refer to paragraph 4.48.a
Replace defective LOP switch (S1) refer to paragraph 4.48
Table 4-6. Diesel Engine Runs Erratic Troubleshooting (Sheet 1 of 2)
Diesel engine runs erratic
Check lubrication oil for contamination
Drain lubrication oil. Service diesel engine with
Not OK OK
proper lubrication oil Check fuel for contamination.
Not OK
restricted fuel line Check for crimped or OK
OK Not OK
paragraph 4.52 bracket installation, refer to
Check governor regulator
Replace fuel line or clear restriction.
Not OK OK
regulator bracket, refer to Adjust or replace governor
OK
refer to paragraph 4.12.3
Inspect fuel injector, Not OK
paragraph 4.52
injector, refer to paragraph 4.12.3 Replace defective fuel Check intake and exhaust
valve clearances, refer to paragraph 4.12.10
Not OK OK
Adjust intake and exhaust valve clearances, refer to
paragraph 4.12.10
OK Check for loose Loose
injector retainers
CONT'D. ON
SHEET 2 SHEET 2
CONT'D. ON Drain fuel and fuel system.
Replace fuel filter element, refer to paragraph 4.12.1. Refill with proper fuel. Bleed system, refer to paragraph 2.7.c
Tighten fuel injector retainers, refer to paragraph 4.12.3 Check cylinder head nuts
for proper torque, refer to paragraph 4.12.9 Not OK
head nuts, refer to Retorque all cylinder
paragraph 4.12.9 OK SHEET 1 CONT'D FROM SHEET 1 CONT'D FROM
Contact next higher level maintenance
Table 4-7. Unexpected Reverse Rotation at Startup Troubleshooting
Unexpected reverse rotation
Ensure recoil starter rope
Pull recoil starter rope quickly and all the way out
Not OK OK
at startup
all the way out. is being pulled quickly and
Contact next higher level maintenance
Diesel engine stops during operation
Check engine oil level
Service engine oil. Not OK
OK
Not OK
strainer, refer to paragraph 4.55 Inspect oil strainer, refer to paragraph 4.55.b
corroded connectors at Inspect for loose or
LOP solenoid (L4) OK
Not OK OK
paragraph 4.50.a shutdown cable, refer to
Inspect LOP engine Clean or replace oil
OK Not OK
Clean and tighten connectors
Replace or adjust LOP
to paragraph 4.50
engine shutdown cable, refer Not OK
OK OK
Not OK Repair or replace
defective wiring Disconnect engine wiring connector (P2).
Then using multimeter set for ohms, check continuity between J2 pin B and TB1 terminal 3 (MEP-531A)/TB1 terminal 4 (MEP-501A) and between P2 pin B and
terminal on LOP switch (S1).
CONT'D. ON
SHEET 2 SHEET 2
CONT'D. ON
With multimeter set for ohms, check continuity in wires L4(Y) ↔ TB1-4 and L4(R) ↔ TB1-2 (MEP-531A) or L4(YEL) ↔ TB1-5 and L4(RED) ↔ TB1-3 (MEP-501A)
Table 4-8. Diesel Engine Stops During Operation Troubleshooting (Sheet 2 of 2)
Test for defective LOP switch (S1), refer to paragraph 4.48 Repair or replace
defective wiring harness
Not OK
solenoid (L4), refer to Test for defective LOP
paragraph 4.49 OK SHEET 1 CONT'D FROM SHEET 1 CONT'D FROM
Replace defective LOP switch (S1), refer to paragraph 4.48
Not OK OK
paragraph 4.49 solenoid (L4), refer to Repair or replace LOP
level maintenance Contact next higher
Diesel engine exhausts black smoke
Check for generator
Reduce load on Not OK
OK
Not OK
Drain fuel tank and fuel system. Then fill tank with proper fuel.
generator set Check fuel for contamination.
Fuel must be DL1, DL2, or JP8
Replace fuel filter element,
set overload
OK
OK Check for clogged air
cleaner and air intake piping
Not OK
refer to paragraph 4.12.3 Inspect fuel injector,
Clean air intake piping, Replace air cleaner element. refer to paragraph 4.12.1.
Prime and bleed fuel lines, refer to paragraph 2.7.c
Not OK OK
refer to paragraph 4.12.3 Replace defective fuel injector,
level maintenance Contact next higher
Table 4-10. Diesel Engine Exhausts Blue-White Smoke Troubleshooting
Check fuel for contamination.
Drain fuel tank and fuel system. Not OK
OK
Not OK
Drain engine oil to proper level
Then fill with proper fuel. Check engine oil
level (too high)
Fuel must be DL1, DL2, or JP8
OK
level maintenance Contact next higher Diesel engine exhausts
blue-white smoke
Replace fuel filter element, refer to paragraph 4.12.1. Prime and bleed fuel lines, refer to paragraph 2.7.c
Recoil rope hard to pull
Inspect recoil starter assembly for obstructions and other
Clear obstructions or replace recoil starter assembly,
Drain/fill to proper Not OK OK refer to paragraph 4.54 Not OK OK
Contact next higher
level maintenance oil level Check engine oil level
Table 4-12. Voltage Output Drops (MEP-531A) Troubleshooting
(MEP-531A)
Not OK OK
load circuit breaker (CB1), refer
Not OK OK
Replace defective ON-OFF
potentiometer (R2), refer to
load circuit breaker (CB1), OK Not OK
Replace VOLTAGE ADJ. potentiometer (R2), refer to refer to paragraph 4.12.4
paragraph 4.28
refer to paragraph 4.12.4 Replace alternator brushes,
Voltage output drops
Inspect/test ON-OFF to paragraph 4.41.a and b
refer to paragraph 4.41
Inspect/test VOLTAGE ADJ. paragraph 4.28.a and b
Inspect alternator brushes,
Not OK OK
Contact next higher level maintenance Inspect/test VOLTS meter (M2),
refer to paragraph 4.25.a and b.
VOLTS meter (M2), Replace defective refer to paragraph 4.25
(MEP-501A)
Not OK OK
load circuit breaker (CB1), refer
Not OK OK
Replace defective ON-OFF
potentiometer (R2), refer to
load circuit breaker (CB1), OK Not OK
Replace VOLTAGE ADJ. potentiometer (R2), refer to
paragraph 4.28 Voltage output drops
Inspect/test ON-OFF to paragraph 4.41.a and c
refer to paragraph 4.41
Inspect/test VOLTAGE ADJ. paragraph 4.28.a and b
Contact next higher level maintenance
Inspect/test VOLTS meter (M2) refer to paragraph 4.25.a and c
Replace defective VOLTS meter (M2) refer to paragraph 4.25
Table 4-14. Generator Set Vibrating/Bouncing Excessively Troubleshooting
Generator set vibrating/
Check resilient mounts for loose/missing attaching
Replace and tighten attaching Not OK OK hardware bouncing excessively hardware Not OK OK
Replace damaged resilient mounts, refer to paragraphs 4.12.6, 4.12.7
and/or 4.12.8
resilient mounts Check for damaged
Contact next higher level maintenance (MEP-531A only)
No voltage indication on VOLTS meter (M2)
Check that alternator harness connector (P1) is connected
Connect alternator harness connector (P1) Check for loose or corroded
connectors at VOLTS
Not OK OK
to control panel connector (J1)
meter (M2).
Not OK OK
Clean and tighten connectors OK Not OK
OK Not OK
Check alternator (G2) brushes for wear Repair or replace
defective wiring
VOLTS meter (M2), Test for defective
Replace defective VOLTS meter (M2)
Not OK OK
maintenance to check for Contact next higher level no output voltage (Table 5-15)
refer to paragraph 4.25.b or c
Replace alternator brushes, refer to paragraph 4.12.4 (MEP-531A) or
contact next higher level maintenance (MEP-501A)
and/or for repair of alternator (G2) With multimeter set for ohms, check
continuity in wires M1 XF1, XF1 M2-1, and M2-2 FL1-N(MEP531A); M1(RED) XF1, XF1 M2(RED), and M2(BLK) (-)(MEP-501A)
Table 4-16. No Indication On %LOAD Meter (M1) Troubleshooting (MEP-531A)
No indication on %LOAD meter (M1) (MEP-531A)
Check that alternator harness connector (P1) is connected
Connect alternator harness connector (P1) Check for loose or corroded
connectors at %LOAD
Not OK OK
to control panel connector (J1)
meter (M1)
Not OK OK
Clean and tighten connectors OK Not OK
Not OK
Replace or repair defective wiring
Test for defective %LOAD meter (M1), refer to
paragraph 4.26.b
meter (M1), refer to Replace defective %LOAD
paragraph 4.26 With Multimeter set for ohms, check
continuity in wires TB1-14 ↔ M1, M1 ↔ XF1, and M1 ↔ CB1-A (LINE)
No indication on %LOAD meter (M1) (MEP-501A)
Check that alternator harness connector (P1) is connected
Connect alternator harness connector (P1) Check for loose or corroded
connectors at %LOAD
Not OK OK
to control panel connector (J1)
meter (M1)
Not OK OK
Clean and tighten connectors
Test for defective %LOAD meter (M1),
OK Not OK
Replace defective %LOAD
check continuity in wires R3 M1(RED), R3 M1(BLK) With multimeter set for ohms,
meter (M1)
R3 TB1-9, OK
Test for defective instrument shunt (R3), Not OK Replace or repair defective wiring Not OK refer to paragraph 4.26.c refer to paragraph 4.26 refer to paragraph 4.29.c
Replace instrument shunt (R3), refer to paragraph 4.29
Table 4-18. No Indication On HERTZ Frequency Meter (M4) Troubleshooting (MEP-531A)
No indication on HERTZ frequency meter (M4)
Check that alternator harness connector (P1) is connected
Connect alternator harness connector (P1) Check for loose or corroded
connectors at HERTZ
Not OK OK
to control panel connector (J1)
frequency meter (M4)
Not OK OK
Clean and tighten connectors OK check continuity in wires Not OK With multimeter set for ohms,
M2-1 M4-1 and
Replace HERTZ frequency meter (M4), M2-2 M4-2 defective wiring Replace or repair (MEP-531A) refer to paragraph 4.24
No indication on HOURS meter (M3)
Check for loose or corroded connectors at
Clean and tighten connectors Not OK OK HOURS meter (M3) Not OK OK OK Not OK HOURS meter (M3), Test for defective
maintenance level Contact next higher Replace defective
HOURS meter (M3), M3(-) With multimeter set for ohms,
check continuity in wires TB1-2 M3(+), and E1 A2-VMAG+ TB1-2, Replace or repair defective wiring refer to paragraph 4.27.b refer to paragraph 4.27 (MEP-531A) A2-VMAG+ M3(+), and E1 TB1-3 TB1-3, (MEP-501A) M3(-)
Table 4-20. No Output From Alternator Troubleshooting (MEP-531A)
No output from alternator (MEP-531A)
Check that alternator harness
connector (P1) is connected to Not OK
OK
control panel receptacle J2
Not OK OK
OK Not OK
Repair or replace defective wiring Test for defective ON-OFF
load circuit breaker (CB1)
Replace defective ON-OFF load circuit breaker (CB1)
harness connector (P1) Connect alternator refer to paragraph 4.41.b
refer to paragraph 4.41
refer to paragraph 4.12.4 Remove and inspect for
defective brushes, OK
Test for defective EMI filter (FL1), refer to paragraph 4.47.c
maintenance level Contact next higher
refer to paragraph 4.47 Replace EMI filter (FL1),
Replace alternator brushes refer to paragraph 4.12.4
OK Not OK
Not OK With multimeter set for ohms, check
continuity in wires J1-B FL1-N, FL1-N E, and CB1-B(LOAD) FL1-L
Table 4-21. No Output From Alternator Troubleshooting (MEP-501A)
No output from alternator (MEP-501A)
Check that alternator harness
connector (P1) is connected to Not OK OK
control panel receptacle J2
Not OK OK
OK Not OK
maintenance level Contact next higher Repair or replace
defective wiring Test for defective ON-OFF load circuit breaker (CB1)
Replace defective ON-OFF load circuit breaker (CB1)
harness connector (P1) Connect alternator
J1-C (-) and check continuity in wires With multimeter set for ohms,
CB1-P1 (LOAD) (+) refer to paragraph 4.41.c
Table 4-22. Air Intake Preheaters Do Not Operate Troubleshooting
Air intake heaters do not operate
Check that alternator harness
connector (P2) is connected to Not OK
OK
control panel receptacle (J2)
Not OK OK
OK Not OK
heaters (HTR1 or HTR2). Test for defective air intake Inspect for defective NATO
slave receptacle (SR1)
Replace defective NATO slave receptacle (SR1)
harness connector (P2) Connect alternator
Not OK
(HTR1 or HTR2), Replace air intake heater(s) refer to paragraph 4.37.a
refer to paragraph 4.37
refer to paragraph 4.51
check for continuity at two Disconnect two wires and
both heaters are bad terminals. If open - one or
Refer to paragraph 4.51 or jumper is missing. Replace defective START-
PREHEAT/PREHEAT/0FF/START refer to paragraph 4.35
switch (S2)
Test for defective
START/PREHEAT/OFF/START switch (S2) refer to paragraph 4.35.b
Clean and tighten connectors Not OK
Repair or replace defective wiring Not OK
Cannot adjust alternator output with VOLTAGE ADJ.
OK
OK
Inspect for broken or corroded connections at VOLTAGE ADJ.
potentiometer (R2)
With multimeter set for ohms, check continuity in wires R2 TB1-12 and R2 TB1-11 (MEP-531A) or R2 TB1-13 and
R2 TB1-12 (MEP-501A)
VOLTAGE ADJ. potentiometer Test for defective
Contact next higher maintenance level. (R2), refer to paragraph 4.28.b
Not OK OK
(R2), refer to paragraph 4.28. VOLTAGE ADJ. potentiometer
Replace defective