Repair manual
86
14.1.2 -Lifting system
ANOMALY
PROBABLE CAUSE
SOLUTION
No platform up and/or down
compensation movement
• Electrovalve YV15 or YV2 defective
• Coil defective
• Electronic module U1 defective
• Wiring harness defective
• Printed circuit defective
• Compensation switch SA5 defective
• Lifting manipulator defective
No platform right and/or left
rotation movement
• Electrovalve YV19 or YV2 defective
• Coil defective
• Electronic module U1 defective
• Wiring harness defective
• Printed circuit defective
• Basket rotation swtich SA4 defective
No jib movement (up and / or
down) from the platform (or
turntable) control station
• Electrovalve YV18 or YV2 defective
• Coil defective
• Electronic module U1 defective
• Wiring harness defective
• Printed circuit defective
• Flow limiter defective
• Jib switch SA7 or SA6 defective
No telescoping movement
(out and/or in) from the plat-
form (or turntable) control
station
• Electrovalve YV14 or YV2 defective
• Coil defective
• Electronic module U1 defective
• Wiring harness defective
• Printed circuit defective
• Telescoping switch SA9 or SA8 defective
• Pressure limiter defective
Fiche DP067
No boom lifting movement
(up and/or down) from the
platform (or turntable) con-
trol station
• Electrovalve YV3 defective
• Electronic module U1 defective
• Wiring harness defective
• Printed circuit defective
• Lifting switch SA13 defective
• Lifting manipulator SM31 defective
Fiche DP068
No arm lifting movement (up
and/or down ) from the plat-
form (or turntable) control
station
• Electrovalve YV4 defective
• Electronic module U1 defective
• Wiring harness defective
• Printed circuit defective
• Lifting switch SA14 defective
• Lifting manipulator SM2 defective
Summary of Contents for HA20PX
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Page 10: ...Repair Manual vi 15 CORRECTIVE MAINTENANCE PROCEDURES 177...
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Page 47: ...Repair manual 135 41 7 SAFETY LOCATION...
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Page 51: ...Repair manual 135 45 8 1 3 Positions of fuses 19 22 26 27 23 25 24 21 20...
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Page 248: ...CORRECTIVE MAINTENANCE SHEET Folio 2 2 CHANGING THE HYDRAULIC PUMP Sheet C091 7 6 3 3 1 2 4 5...
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Page 265: ...CORRECTIVE MAINTENANCE SHEET Folio 3 3 CHANGING THE SLEW RING Sheet C106 12 13 11...
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Page 274: ...CORRECTIVE MAINTENANCE SHEET Folio 2 2 CHANGING THE JIB CYLINDER Sheet C115 2 4 3 5 1...
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Page 282: ...CORRECTIVE MAINTENANCE SHEET CHANGING THE COUNTERWEIGHTS Sheet C134...