103-25
VERSALIFT VST-9000-I-E
SER
VICE PROCEDURES
properly
3. Plugged or defective control valve
4. Pinched or kinked pressure or return hose
in boom
5. Emergency stop valve is activated
SLOW OPERATION, ALL FUNCTIONS
1. Valve spools not fully open
2. Oil too heavy or cold
3. Low
hydraulic
fl uid supply
4. System operating pressure or main system
relief set too low
5. Dirt or foreign matter in hydraulic system,
fi lters valves etc.
6. Pinched or kinked hydraulic lines
7. Engine speed too low
8. Excessive leakage in pump or control valve
due to wear
9. Safety trigger not adjusted properly
SLOW HYDRAULIC CYLINDERS OPERATION,
ROTATION O.K.
1. Holding valves defective
2. Main relief valve set too low or open due to
contamination
3. Excessive pump leakage
4. Internal cylinder leakage
5. System operating pressure set too low
SLOW OPERATION OF ROTATION SYSTEM,
BOOM MOTION O.K.
1. Rotation motor defective
EXCESSIVE SLACK OR ERRATIC MOVEMENT
IN ROTATION SYSTEM
1. Gearbox mounting bolts loose
2. Rotation bearing needs greasing
3. Excessive clearance between pinion and
turntable bearing
4. Turntable bearing or pinion teeth damaged
5. Gearbox worn or defective
6. Rotation motor mounting bolts loose
EXCESSIVE VIBRATION OR NOISE
1. Pressure relief valve set too low
2. Holding valve defective
3. Air in hydraulic system due to low oil supply
4. Pump cavitating due to dirty suction strainer
PLATFORM LEVELING SLOPPY, OUT OF LEVEL,
OR ERRATIC
1. Holding valve is defective.
2. Leveling relief valve setting is too low.
BOOM DRIFTS DOWN WHEN CONTROLS ARE
IN NEUTRAL
1. Holding valve defective
2. Leakage past seals in hydraulic cylinder
REMOTE ENGINE START/STOP INOPERATIVE
1. Engine start/stop system not engaged
2. Pressure switch defective.
3. Airline pinched or leaking
4. Electrical box not grounded
5. Air cylinder defective
TRUCK ENGINE PULLS DOWN OR STALLS
WHEN CONTROLS ARE OPERATED
1. Idle speed too slow
2. Engine still cold
3. Engine needs tune-up
OVERHEATING OF HYDRAULIC SYSTEM
1. Main system relief valve set too low or open
due to contamination
2. System operating pressure too high
3. Excessive hydraulic oil fl ow due to improper
PTO ratio or overspeeding of truck engine
PLATFORM TIP DURING PLATFORM ROTATION
1. Spring return selector valve sticking.
PLATFORM ROTATION SLOW
1. Flow restrictors may be blocked.
Содержание VST-9000I-E100
Страница 2: ......
Страница 4: ......
Страница 7: ...TABLE OF CONTENTS ...
Страница 8: ...100 1 VERSALIFT VST 9000 I E INTRODUCTION SECTION 100 INTRODUCTION ...
Страница 10: ...100 3 VERSALIFT VST 9000 I E INTRODUCTION Figure 1 1 Model VST 9000 I E Nomenclature ...
Страница 11: ......
Страница 12: ...101 1 VERSALIFT SAFETY SAFETY SECTION 101 SAFETY ...
Страница 14: ...102 1 VERSALIFT VST 9000 I E THEORY OF OPERATION SECTION 102 THEORY OF OPERATION ...
Страница 20: ...103 1 VERSALIFT VST 9000 I E SERVICE PROCEDURES SECTION 103 SERVICE PROCEDURES ...
Страница 30: ...103 11 VERSALIFT VST 9000 I E SERVICE PROCEDURES TORQUE CHART ...
Страница 31: ...103 12 VERSALIFT VST 9000 I E SERVICE PROCEDURES ...
Страница 32: ...103 13 VERSALIFT VST 9000 I E SERVICE PROCEDURES ...
Страница 33: ...103 14 VERSALIFT VST 9000 I E SERVICE PROCEDURES ...
Страница 34: ...103 15 VERSALIFT VST 9000 I E SERVICE PROCEDURES ...
Страница 35: ...103 16 VERSALIFT VST 9000 I E SERVICE PROCEDURES PAGE INTENTIONALLY LEFT BLANK ...
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Страница 48: ...104 1 VERSALIFT VST 9000 I E INSTALLATION SECTION 104 INSTALLATION ...
Страница 51: ...104 4 VERSALIFT VST 9000 I E INSTALLATION ...
Страница 59: ...104 12 VERSALIFT VST 9000 I E INSTALLATION ...
Страница 60: ...104 13 VERSALIFT VST 9000 I E INSTALLATION ...
Страница 61: ...104 14 VERSALIFT VST 9000 I E INSTALLATION ...
Страница 62: ...104 15 VERSALIFT VST 9000 I E INSTALLATION ...
Страница 63: ...104 16 VERSALIFT VST 9000 I E INSTALLATION ...
Страница 65: ...105 2 VERSALIFT VST 9000 I E HYDRAULIC SCHEMATICS ...
Страница 66: ...105 3 VERSALIFT VST 9000 I E HYDRAULIC SCHEMATICS ...
Страница 67: ......
Страница 69: ...PARTS ASSEMBLIES 106 2 VERSALIFT VST 9000 I E PARTS LOCATION DETAIL ...
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Страница 101: ...VERSALIFT CYLINDERS CYLINDERS Lot No 527 PRIOR 115 10 ...
Страница 102: ...CYLINDERS VERSALIFT CYLINDERS Lot No 527 PRIOR 115 11 PARTS AND ASSEMBLIES ...
Страница 103: ...VERSALIFT CYLINDERS CYLINDERS Lot No 527 PRIOR 115 12 ...
Страница 104: ...CYLINDERS VERSALIFT CYLINDERS Lot No 527 PRIOR 115 13 PARTS AND ASSEMBLIES ...
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Страница 143: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100087014 53010 1 126 4 ...
Страница 144: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100087014 53035 1 126 5 PARTS AND ASSEMBLIES ...
Страница 145: ...VERSALIFT CYLINDERS CYLINDERS Lot No 527 100080683 53007 1 126 6 ...
Страница 146: ...VERSALIFT CYLINDERS CYLINDERS Lot No 527 100082859 53036 1 126 7 PARTS AND ASSEMBLIES ...
Страница 147: ...VERSALIFT CYLINDERS CYLINDERS Lot No 527 100083690 53045 1 126 8 ...
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Страница 156: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100087492 53047 1 129 5 PARTS AND ASSEMBLIES ...
Страница 157: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100086804 53046 1 129 6 ...
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Страница 196: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100086950 19742 2 140 7 PARTS AND ASSEMBLIES ...
Страница 197: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100081229 19743 2 140 8 ...
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Страница 204: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100086950 19742 2 140 7 PARTS AND ASSEMBLIES ...
Страница 205: ...VERSALIFT CYLINDERS CYLINDERS Lot No 1134 100081229 19743 2 140 8 ...
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Страница 259: ...VERSALIFT GEARBOX GEARBOX Lot No 280 100086964 148 6 ...
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Страница 275: ...AS BUILT OPTIONS PARTS INDEX VERSALIFT PAGE INTENTIONALLY LEFT BLANK ...