TM 9-2350-256-34
0004 00
Malfunction/Symptom
Troubleshooting Procedure
MECHANICAL TRANSMISSION AND MAIN HYDRAULIC PUMP CIRCUIT (MAIN HYDRAULIC SYSTEM)
25.
Mechanical transmission fails to operate. ....................................................................... .................................WP 0010 00
26.
Main hydraulic pump fails to engage. ............................................................................. .................................WP 0010 00
27.
Mechanical transmission overheating............................................................................. .................................WP 0010 00
28.
Mechanical transmission slipping or chattering.............................................................. .................................WP 0010 00
29.
Mechanical transmission fails to disengage main hydraulic pump...................................................................WP 0010 00
30.
Main hydraulic pump noisy..............................................................................................................................WP 0010 00
SPADE CIRCUIT (MAIN HYDRAULIC SYSTEM)
31.
Spade will not operate..................................................................................................... .................................WP 0011 00
32.
Spade will not hold with spade combination control valve lever in any position. ........... .................................WP 0011 00
33.
Spade will operate only partially. .................................................................................... .................................WP 0011 00
HOISTING BOOM CIRCUIT (MAIN HYDRAULIC SYSTEM)
34.
Boom will not operate..................................................................................................... .................................WP 0012 00
35.
Boom operates partially....................................................................................................................................WP 0012 00
36.
Boom will not hold in any position. ................................................................................ .................................WP 0012 00
37.
Boom will not stop automatically after live boom operation............................................................................WP 0012 00
38.
Boom live operation does not function.............................................................................................................WP 0012 00
MAIN WINCH CIRCUIT (AUXILIARY HYDRAULIC SYSTEM)
39.
Main winch will not operate.............................................................................................................................WP 0013 00
HOIST WINCH CIRCUIT (AUXILIARY HYDRAULIC SYSTEM)
40.
Hoist winch will not operate.............................................................................................................................WP 0014 00
SPADE CIRCUIT (AUXILIARY HYDRAULIC SYSTEM)
41.
Spade will not operate..................................................................................................... .................................WP 0015 00
HOISTING BOOM CIRCUIT (AUXILIARY HYDRAULIC SYSTEM)
42.
Boom will not operate..................................................................................................... .................................WP 0016 00
HYDRAULIC IMPACT WRENCH (AUXILIARY HYDRAULIC SYSTEM)
43.
Impact wrench does not operate...................................................................................... .................................WP 0017 00
AUXILIARY POWER UNIT (APU)
44.
Engine fails to crank.........................................................................................................................................WP 0018 00
45.
Engine cranks but fails to start..........................................................................................................................WP 0018 00
46.
Engine hard to start. ........................................................................................................ .................................WP 0018 00
47.
Engine hard to start in cold weather..................................................................................................................WP 0018 00
48.
Engine starts but fails to keep running..............................................................................................................WP 0018 00
49.
Engine overheats............................................................................................................. .................................WP 0018 00
50.
Engine misfires, lacks power, or emits black smoke. ...................................................... .................................WP 0018 00
51.
Engine knocks................................................................................................................. .................................WP 0018 00
52.
Engine uses excessive oil and emits light blue smoky exhaust.........................................................................WP 0018 00
53.
High air temperature light on APU control box fails to operate properly. ....................... .................................WP 0018 00
54.
Low oil pressure light in APU control box fails to operate properly.................................................................WP 0018 00
55.
Oil pressure gage fails to operate......................................................................................................................WP 0018 00
56.
Battery-generator indicator reads in yellow or lower red region with APU engine
running and APU generator switch on..............................................................................................................WP 0018 00
0004 00-2