Tesco ML50-30 User manual

MAINTENANCE LIFT
Maintenance Manual

  co 

Property of American Airlines

2-Contents
Page 1
Page
ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
TABLE OF CONTENTS
CHAPTER 2: MAINTENANCE
Section 1: Servicing
PERIODIC MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
HYDRAULIC OIL RECOMMENDATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
CHECKING HYDRAULIC OIL LEVEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FILLING HYDRAULIC OIL RESERVOIR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
LUBRICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Grease Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Oil Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Section 2: Hydraulic System Adjustments
HYDRAULIC ADJUSTMENTS - HYDRAULIC POWER MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HYDRAULIC ADJUSTMENTS - TRAVERSING PLATFORM VALVE. . . . . . . . . . . . . . . . . . . . . . . . . . 4
Flow Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
COUNTER BALANCE/HOLDING VALVE-HOLD PRESSURE ADJUSTMENT . . . . . . . . . . . . . . . . . . 5
LIFT DOWN FLOW CONTROL VALVE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Section 3: Troubleshooting
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRICAL SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Troubleshooting Chart - General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Section 4: Repairs
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
STRUCTURAL REPAIRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scissor arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Scissor frame or van body. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Handrails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Surface rust or scratches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Section 5: System Schematics
HYDRAULIC SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4 Stabilizers & 12VDC Pump with Return Filter . . . . . . . . . . . . . . . . . . . . . . . . . Figure 1 . . . . 1
Apr. 17
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2-Contents
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TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
ELECTRICAL SCHEMATIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
How to Read This Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2 . . . . . 1
Electrical Schematic, Engine & Chassis - Sheet 1 of 9 . . . . . . . . . . . . . . . . . . . . Figure 3 . . . . . 1
Electrical Schematic, Lighting - Sheet 2 of 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 4 . . . . . 1
Electrical Schematic, Lift & Stab. Control - Sheet 3 of 9 . . . . . . . . . . . . . . . . . . . Figure 5 . . . . . 1
Electrical Schematic, Lift & Stab. Control - Sheet 4 of 9 . . . . . . . . . . . . . . . . . . . Figure 6 . . . . . 1
Electrical Schematic, Options - Sheet 5 of 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 7 . . . . . 1
Electrical Schematic, Options - Sheet 6 of 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 8 . . . . . 1
Electrical Schematic, Options - Sheet 7 of 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 9 . . . . . 1
Electrical Schematic, Tables of Veh. Connections - Sheet 8 of 9 . . . . . . . . . . . . Figure 10 . . . . 1
Electrical Schematic, Tables of Veh. Connections
DPDT & SPDT Relay Wiring - Sheet 9 of 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 11 . . . . 1
Apr. 17
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2-Figures
Page 1
ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
LIST OF FIGURES
CHAPTER 2: MAINTENANCE
Section 1: Servicing
2-1 Figure 1 HYDRAULIC OIL FILL POINT......................................................................... Page 3
2-1 Figure 2 GREASE POINTS DIAGRAM ......................................................................... Page 5
2-1 Figure 3 GREASE POINTS - LIFT CYLINDERS UPPER.............................................. Page 6
2-1 Figure 4 GREASE POINTS - LIFT CYLINDERS BOTTOM........................................... Page 7
2-1 Figure 5 GREASE POINTS - STABILIZERS................................................................. Page 7
2-1 Figure 6 GREASE POINTS - TRAVERSING CYLINDER AND ROLLERS................... Page 8
2-1 Figure 7 GREASE POINTS - SCISSOR ROLLERS AND PINS.................................... Page 9
2-1 Figure 8 GREASE POINT - LOWER BOOSTER ARM.................................................. Page 10
2-1 Figure 9 GREASE POINTS - TRACKS AND BOOSTER ARM UPPER LIP ................. Page 10
2-1 Figure 10 OIL POINTS .................................................................................................... Page 11
Section 2: Hydraulic System Adjustments
2-2 Figure 1 HYDRAULIC SYSTEM.................................................................................... Page 3
2-2 Figure 2 TRAVERSING PLATFORM VALVE................................................................ Page 4
2-2 Figure 3 COUNTER BALANCE/HOLDING VALVE....................................................... Page 5
2-2 Figure 4 LIFT DOWN FLOW CONTROL VALVE ADJUSTMENT................................. Page 6
Section 3: Troubleshooting
Section 4: Repairs
Section 5: System Schematics
2-5 Figure 1 HYDRAULIC SCHEMATIC - 4 STABILIZERS & 12V PUMP
WITH RETURN FILTER.................................................................................. Page 2
2-5 Figure 2 HOW TO READ THIS SCHEMATIC ............................................................... Page 5
2-5 Figure 3 ELECTRICAL SCHEMATIC, ENGINE & CHASSIS - SHEET 1 OF 9............. Page 6
2-5 Figure 4 ELECTRICAL SCHEMATIC, LIGHTING - SHEET 2 OF 9.............................. Page 7
2-5 Figure 5 ELECTRICAL SCHEMATIC, LIFT & STAB. CONTROL - SHEET 3 OF 9...... Page 8
Apr. 17
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2-Figures
Page 2
TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
2-5 Figure 6 ELECTRICAL SCHEMATIC, LIFT & STAB. CONTROL - SHEET 4 OF 9...... Page 9
2-5 Figure 7 ELECTRICAL SCHEMATIC, OPTIONS - SHEET 5 OF 9............................... Page 10
2-5 Figure 8 ELECTRICAL SCHEMATIC, OPTIONS - SHEET 6 OF 9............................... Page 11
2-5 Figure 9 ELECTRICAL SCHEMATIC, OPTIONS - SHEET 7 OF 9............................... Page 12
2-5 Figure 10 ELECTRICAL SCHEMATIC, TABLES OF VEH. CONNECTIONS
- SHEET 8 OF 9 ............................................................................................. Page 13
2-5 Figure 11 ELECTRICAL SCHEMATIC, TABLES OF VEH. CONNECTIONS
DPDT & SPDT RELAY WIRING - SHEET 9 OF 9........................................... Page 14
Apr. 17
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SERVICING 2-1
Page 1
ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
CHAPTER 2: MAINTENANCE
Section 1: Servicing
1. PERIODIC MAINTENANCE
Regular maintenance is required to ensure optimum performance and long life for machine components.
Maintain the unit by performing periodic maintenance at the intervals listed in the Periodic Maintenance
Chart below.
If the unit is being operated in severe weather conditions such as extreme heat or cold, or in sandy,
dusty, or snowy areas, increase the frequency of periodic maintenance as necessary.
NOTE: Refer to the chassis manufacturer’s manual for service requirements to the chassis.
PERIODIC MAINTENANCE CHART
PROCEDURE PERIOD (HOURS)
8250 OTHER
Perform walk-around inspection and check for damage, missing
parts and fluid leaks. X
Check spotlights, indicator lights, and beacon lights. X
Check hydraulic oil level. X
Check condition of all handrails and mounting brackets. X
Check condition of operator’s boarding steps. X
Check fire extinguisher levels. Make sure they are secured in
their mounting brackets. X
Inspect pivot pins on platform cylinders for wear. X
Check scissors pivot pins and rollers for wear. X
Inspect condition of all hydraulic hoses and fittings and check for
leakage. X
Inspect all hydraulic components for fluid leakage. X
Inspect all wiring harnesses for damage and security. X
Check condition of bumpers. X
Check operation of the platform mounted pendant control station. X
Check condition of Hi-Lift/scissors structure. Check for stress
cracks, physical damage, or corrosion. X
Check platform under structure for cracked welds or corrosion. X
Check condition of placards and safety warning decals. X
Mar. 09
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MAINTENANCE
2-1
Page 2
TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
CAUTION
AFTER PERFORMING MAINTENANCE ON THE HI-LIFT, DISPOSE OF ANY
ENVIRONMENTALLY SENSITIVE MATERIALS ACCORDING TO LOCAL ENVIRONMENTAL
REGULATIONS. EXAMPLES OF SUCH MATERIALS INCLUDE: BATTERIES, RUBBER BELTS,
LUBRICANTS (MOTOR OILS AND GREASE), AND HYDRAULIC OIL.
2. HYDRAULIC OIL RECOMMENDATIONS
The hydraulic oil reservoir is factory filled with ISO 15 hydraulic oil at the time of shipping.
SEVERE CLIMATE OPERATION
• If platform lowering becomes too slow in severe cold weather operations, a lower viscosity fluid
may be substituted.
3. CHECKING HYDRAULIC OIL LEVEL
Maintaining proper hydraulic oil level is important. DO NOT overfill the hydraulic oil reservoir. Hydraulic
oil expands when heated.
1. The hydraulic oil reservoir is equipped with a sight gauge. Ensure that the Hi-Lift is fully lowered
and stabilizers must be in stowed position when checking hydraulic oil level using the sight
gauge. The oil level should be near the “High” mark and must not be below the “Low” mark.
Replace return filter 6 mos.
Check that all wiring terminals are secure. 6 mos.
Replace corrosion inhibitor in main electrical control box. Annually
Drain hydraulic reservoir and clean. Annually
Check hoist rollers for wear X No more than
1/4” wear
OIL OPERATING TEMPERATURE RANGE
RECOMMENDED
GRADE OF
HYDRAULIC FLUID CLIMATE AMBIENT
TEMPERATURE
MAXIMUM BULK OIL
(RESERVOIR
TEMP.)
ISO 32 Hot Above 60° F (15° C) 180° F (82° C)
ISO 15 Moderate 20° F (-7° C) -100° F (38° C) 165° F (74° C)
ISO 5 Cold Below 32° F (0° C) 150° F (60° C)
PERIODIC MAINTENANCE CHART
PROCEDURE PERIOD (HOURS)
8250 OTHER
Mar. 09
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SERVICING 2-1
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ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
4. FILLING HYDRAULIC OIL RESERVOIR
1. Check hydraulic oil level as described above.
2. Determine the amount of oil to be added: 2.5 gallons of oil will raise the level in the reservoir
about 1 inch.
3. Raise the work platform if necessary to access the reservoir filler cap. Support platform with the
maintenance stand.
4. Clean the area around the filler/breather cap.
5. Remove cap and check strainer screen for any foreign material.
6. Clean thoroughly before putting hydraulic oil into the reservoir.
7. Use only clean, uncontaminated oil, filtered to 10M. Add the quantity of oil determined in step 2.
8. Secure cap when finished.
9. Recheck hydraulic oil level.
Figure 1
HYDRAULIC OIL FILL POINT
5. LUBRICATION
A. Grease Points
NOTE: Use any commercially available “MP” multipurpose grease which meets NLGI Grade 1 or
2 standards.
Wipe grease fittings clean and apply grease. Before coating tracks with grease, clean surfaces to
remove dirt and foreign material (ref. Figure 2 thru Figure 8).
B. Oil Points
NOTE: Use SAE 5W-30W oil or other adequate Lubricants with brush or oil can as appropriate
(ref. Figure 9).
Lift Cylinder Rods - Apply oil to reduce cylinder noise as needed which may be caused by dry
seals.
HYDRAULIC FILL POINT
(HYDRAULIC OIL ONLY)
Mar. 17
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MAINTENANCE
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TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
NOTE: The scissors lift must be raised to access the grease points. Make sure to put maintenance
prop up.
NOTE: Check at intervals listed and lubricate as required. In unusual weather conditions, check at
more frequent intervals.
GREASE POINTS
ITEM COMPONENT TOTAL
FITTINGS INTERVAL
1 Scissor pivot pins (Upper/Middle/Lower) 12 6 mos.
2 Scissor Arm End Pins 4 6 mos.
3 Scissor roller (Upper/Lower) 8 6 mos.
4 Traversing roller pins 4 6 mos.
5 Lift cylinder (Upper/Lower) 8 6 mos.
6 Traversing cylinder rod ends 2 6 mos.
7 Booster arm pivot 1 6 mos.
8 Stabilizers 16 6 mos.
9 Roller Tracks 3 mos.
GREASE
Mar. 17
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SERVICING 2-1
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ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
WARNING
THE SCISSOR LIFT MUST BE SECURED WITH THE MAINTENANCE PROP BEFORE
ACCESSING THE GREASE POINTS.
Figure 2
GREASE POINTS DIAGRAM
Ref. Figure 7
Ref. Figure 8
Ref. Figure 7
Ref. Figure 6
Ref. Figure 3
1
36
7
1
5
1
3
2
4
5
Ref. Figure 3
& Figure 4
Ref. Figure 6
Ref. Figure 7
Ref. Figure 7
Ref. Figure 7
Ref. Figure 7
Mar. 17
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MAINTENANCE
2-1
Page 6
TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
Figure 3
GREASE POINTS - LIFT CYLINDERS UPPER
TOP LIFT CYLINDER
BOTTOM LIFT CYLINDER
1. Set the maintenance prop. Refer to Chapter 1-2.
2. Raise or lower the lift to access all grease points of upper lift cylinder rollers (4).
GREASE POINT
GREASE POINT
Mar. 17
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SERVICING 2-1
Page 7
ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
Figure 4
GREASE POINTS - LIFT CYLINDERS BOTTOM
Figure 5
GREASE POINTS - STABILIZERS
TOP LIFT CYLINDER
BOTTOM LIFT CYLINDER
GREASE POINT
GREASE POINT
GREASE POINT - 4 PER LEG
Mar. 17
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MAINTENANCE
2-1
Page 8
TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
Figure 6
GREASE POINTS - TRAVERSING CYLINDER AND ROLLERS
GREASE POINT
TRAVERSING CYLINDER ROD ENDS -
BOTH ENDS
GREASE POINT - BOTH ENDS
TRAVERSING ROLLER PINS -
8 PLCS
Mar. 17
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SERVICING 2-1
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ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
Figure 7
GREASE POINTS - SCISSOR ROLLERS AND PINS
SCISSOR PIVOT PINS - BOTH SIDES
& UPPER AND LOWER
SCISSOR ARM END PINS -
4 PLCS
SCISSOR CENTER PINS -
BOTH SIDES
UPPER AND LOWER
UPPER SCISSOR ROLLERS - BOTH SIDES
SCISSORLOWERROLLERPINS-
BOTH SIDES
NOTE: To grease lower scissor rollers, lift must be down.
Mar. 17
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MAINTENANCE
2-1
Page 10
TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
Figure 8
GREASE POINT - LOWER BOOSTER ARM
Figure 9
GREASE POINTS - TRACKS AND BOOSTER ARM UPPER LIP
GREASE POINT
GREASE W/BRUSH
SCISSOR ROLLER TRACKS - BOTH SIDES
& UPPER AND LOWER
BOOSTER ARM LIP
Mar. 17
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SERVICING 2-1
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ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
Figure 10
OIL POINTS
OIL POINTS
ITEM COMPONENT TOTAL
PLCS INTERVAL
1 Lift Cylinder Rods 4 6 mos.
2 Platform entry swing gate hinge points & Lock 3 1 mos.
3 Platform Ext. Segments Pocket & Locking Bar 1 mos.
OIL
NOTE: Use SAE 5W-30W oil or other adequate
Lubricants with brush or oil can as appropriate.
Mar. 17
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THIS PAGE INTENTIONALLY LEFT BLANK
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HYDRAULIC SYSTEM ADJUSTMENTS 2-2
Page 1
ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
Section 2: Hydraulic System Adjustments
WARNING
BEFORE STARTING ANY ADJUSTMENT PROCEDURE THAT REQUIRES THE PLATFORM TO
BE IN AN ELEVATED POSITION, MOVE THE MAINTENANCE STAND INTO POSITION AND
LOWER THE PLATFORM FULLY AGAINST THE MAINTENANCE PROP.
WARNING
IT IS MANDATORY THAT EYE PROTECTION (SAFETY GOGGLES OR FACE SHIELD) BE WORN
WHEN MAKING PRESSURE CHECKS AND/OR ADJUSTMENTS ON THE HYDRAULIC SYSTEM.
HYDRAULIC OIL WILL CAUSE EYE INJURIES. IF HYDRAULIC OIL GETS ON THE SKIN, WASH
AFFECTED AREA IMMEDIATELY TO AVOID IRRITATION.
WARNING
DRIVE WHEELS MUST BE CHOCKED TO PREVENT MOVEMENT OF THE UNIT IN EITHER
DIRECTION.
WARNING
WHEN MAKING PRESSURE CHECKS OR ADJUSTMENTS, USE GAUGES WITH KNOWN
ACCURACY. IMPROPER HYDRAULIC ADJUSTMENTS CAN CAUSE INJURY TO PERSONNEL
OR DAMAGE TO EQUIPMENT.
WARNING
DO NOT REMOVE GAUGE PORT PLUGS OR GAUGES, OR LOOSEN HYDRAULIC
CONNECTIONS WITH THE UNIT RUNNING. HYDRAULIC PRESSURE IN THE SYSTEMS COULD
CAUSE HYDRAULIC OIL TO SPRAY ON PERSONNEL.
CAUTION
USE EXTREME CARE TO PREVENT CONTAMINATION OF HYDRAULIC SYSTEM WHEN
INSTALLING GAUGES, FITTINGS, OR REPLACING A COMPONENT. CONTAMINATION CAN
RESULT IN EQUIPMENT DAMAGE.
Aug. 06
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MAINTENANCE
2-2
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TESCO EQUIPMENT LLC ML50-30 MAINTENANCE LIFT
CAUTION
WHENEVERANADJUSTABLEHYDRAULICRELIEFVALVEOR PRESSUREREDUCING VALVE
IS REPLACED, REDUCE THE PRESSURE SETTING PRIOR TO STARTING THE UNIT. ADJUST
THE REPLACED COMPONENT TO SPECIFICATION AS OUTLINED IN THE ADJUSTMENT
PROCEDURES.
CAUTION
WHEN MAKING HYDRAULIC SYSTEM ADJUSTMENTS, THE HYDRAULIC OIL MUST BE AT
NORMAL OPERATING TEMPERATURE.
1. HYDRAULIC ADJUSTMENTS - HYDRAULIC POWER MODULE
ITEM FUNCTION SETTING PROCEDURE
A Pressure Gauge N/A Used for reading system pressures.
B Lift Down Speed
Control 90 sec +/- 10 Raise lift fully. Activate lift down function and record the time it takes the lift to lower fully (not including
stabilizer retract). Adjust valve to increase/
decrease lift lower speed. Loosen locknut and turn
valve clockwise to slow lift speed, counter-
clockwise to increase lift speed. Tighten locknut
when adjustment is complete.
C Main Relief 1800 psi
+/- 25 With the engine running, extend the stabilizers to the maximum and hold control in “Extend”. Read
the pressure at the gauge. To adjust the pressure,
loosen the locknut on valve. Turn valve clockwise
to increase pressure, counter-clockwise to lower
pressure. Tighten locknut when pressure is set.
D Stabilizer Speed
Control
(Left Rear Stab.)
N/A Make certain that left rear stabilizer is last to fully
extend and last to fully retract. Loosen locknut and
turn valve clockwise to slow stabilizer speed,
counter-clockwise to increase stabilizer speed.
Tighten locknut when adjustment is complete.
E Port Relief 1,200 psi
+/- 25 Energize lift down function, read pressure at gauge. Turn valve clockwise to increase pressure,
counter-clockwise to lower pressure.
Mar. 17
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HYDRAULIC SYSTEM ADJUSTMENTS 2-2
Page 3
ML50-30 MAINTENANCE LIFT TESCO EQUIPMENT LLC
Figure 1
HYDRAULIC SYSTEM
F
G
Stabilizer
Pressure
Reducing Valve
Stabilizer
Pressure Switch
(Left Rear)
N/A Fully retract lift and stabilizers. Turn valve fully
clockwise and extend/retract stabilizers till all
stabilizers operate smoothly and consistently with
the left rear stabilizer last to extend and last to
retract (See Adjustment D). Then turn valve
counter-clockwise till chassis is lifted between 1 &
2 in. (2.54 am & 5.08 am). Fully retract stabilizers
between adjustments. Chassis must be level +/- 1
in. (2.54 am) side to side.
Ensure Stabilizer Pressure Switch still just
activates when stabilizers are extended. Screw in
adjustment to increase the pressure needed to
activate the switch. Screw out to decrease. Retract
stabilizers and verify pressure switch deactivates.
H Compressor
Pressure Relief N/A Open the valve all the way counter clockwise. While the compressor is running continue to raise
the lift. Adust valve (clockwise) until the lift
operates smoothly. Turn valve clockwise to
increase pressure, counter-clockwise to lower
pressure.
ITEM FUNCTION SETTING PROCEDURE
A
C
B
D
E
F
STABILIZER
G
H
Mar. 17
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