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36 

 

7.  Install new piston, seals, and rod wiper. 

 

8.  Install and tighten piston head nut to 325 

ft•lb of torque. Upper clevis and pin may be used to prevent 

rotation of rod while tightening. 

 

9.  Liberally lubricate piston and seal with clean grease or oil. 

 

10. Insert piston into barrel, taking care not to damage seal.    

 

11. Slip bearing assembly into place and align retainer hole with slot in barrel. 

 

12. Turn bearing with spanner wrench until retainer is reinserted completely. 
 

6.3.1.3.

 

Placing Cylinder Back Into Service 

Loctite PST #567 pipe thread sealant or equivalent is recommended.  
 

 
Do not use Teflon tape on hydraulic threaded connections. 

Tape fragments may damage hydraulic system. 

 
Autoquip recommends replacing any NPT fittings that have been disassembled due to their inherent 
design for sealing. 
 
1.  Check that lift anchors are tight (when used). Check all pins and other mechanical and hydraulic 

connections. 

 

2.  Restore oil level. See oil recommendations in 

“Oil Requirements” section. 

 

3.  Turn on electrical power and pre

ss “UP” button. Loosen bleeder plug at the top end of ram casing and 

operate pump to remove trapped air from ram. When clear oil appears, tighten plug and raise lift 
slightly to disengage maintenance locks. 

 

4.  Lower lift completely and hold 

“DOWN” button for 60 seconds to allow air in cylinders to bleed back 

into reservoir.  

 

5. 

See “Bleeding Air From System” section 

 

 

6.3.2

 

Bleeding Air From System   

1.  Bleed air from system by raising lift 25-50% of full travel, then lower 

completely.  

 

2. 

Hold “DOWN” button for 60 seconds.  

 

3.  Repeat procedure 8-10 times. If this does not bleed all air from system, 

contact Autoquip.  

 

4.  Clean up any spilled oil. Dispose of spilled oil in an environmentally safe 

manner. 

 

6.3.3

 

Hydraulic Velocity Fuse and Flow Control (VF/FC) Replacement 

NOTICE 

Содержание PLTC-58120

Страница 1: ...TALLATION OPERATION AND SERVICE MANUAL PLTC SCISSORS DOCK LIFT 1058 West Industrial Avenue Guthrie OK 73044 1058 888 811 9876 405 282 5200 FAX 405 282 3302 www autoquip com Item 830PLT Version 6 0 10...

Страница 2: ...on 15 4 1 Remote Power Unit Installation 15 4 2 Power Unit Wiring 15 4 2 1 Contractor Remote Power Unit 15 4 2 2 Heavy Duty Remote Power Unit 15 4 3 Pit Installation 16 4 4 Surface Installation 21 4 5...

Страница 3: ...aulic Cylinder Repair 33 6 3 2 Bleeding Air From System 36 6 3 3 Hydraulic Velocity Fuse and Flow Control VF FC Replacement 36 6 3 4 Hose Orientation 37 6 3 5 Schematics and Field Wiring Details 38 6...

Страница 4: ...damage found must be noted on delivery receipt In addition to this preliminary inspection carefully inspect lift for concealed damage Any concealed damage found that was not noted on delivery receipt...

Страница 5: ...2 6 Before Operation Before using lift operator must Read and or had explained and understood manufacturer s operating instructions and safety rules Inspect lift for proper operation and condition Any...

Страница 6: ...e been used in a manner contrary to the manufacturer s limitations or recommendations as stated in the manual or that have been repaired altered or modified in any manner outside of Autoquip Corp s ma...

Страница 7: ...80 60 8000 72 96 12 4700 6400 6400 6400 6080A 60 8000 96 96 12 4890 6400 6400 5400 6080S 60 8000 72 120 12 4800 6400 6400 6400 6080B 60 8000 84 120 12 5100 6400 6400 6000 6080K 60 8000 96 120 12 5300...

Страница 8: ...duced 2 for each one inch extension from edge of platform If load is rolling onto platform in any but fully lowered position end and or side load capacity is reduced by dividing the rated end side loa...

Страница 9: ...eath or serious injury CAUTION Indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE Indicates a situation that could result in damage to the lift or oth...

Страница 10: ...DS to understand the product safe handling procedures and first aid measures relating to product Follow this information when servicing or repairing lift Do not drain or pour any fluids or lubricants...

Страница 11: ...azard Clean up spilled fluids and lubricants 3 5 Maintenance Prevent serious injury or death Disconnect and or lock out electrical supply to power unit prior to any maintenance being performed Prevent...

Страница 12: ...3 7 Labels To protect against death or serious injury all labels must be on lift and must be legible If any of these labels are missing or cannot be read call Autoquip for replacement labels i WARNIN...

Страница 13: ...13 1 DECAL_CAPACITY 2 36430050 3 36401487 4 36401560 5 06100010...

Страница 14: ...14 6 36403225 7 36400265 8 36400257 9 36403720 10 36433670...

Страница 15: ...ent pump assembly with an internal relief valve check valve and down solenoid valve 2 Because an Autoquip Super Torque motor actually delivers substantially more horsepower than the nameplate rating i...

Страница 16: ...drawing 82600431 below Pit should be 2 longer and 2 wider than lift platform to allow a 1 gap between platform and pit Pit depth should allow for shims or grout 2 Conduit diameter must be a minimum o...

Страница 17: ...17 PLT Pit Detail See Pit Installation Notes...

Страница 18: ...ulic Piping Hose Size Up to 25 feet ID 26 feet to 50 feet ID Over 50 feet 1 ID 6 Fittings have been provided to extend the hose connection outside the bevel toe guard Point the elbow toward the pipe c...

Страница 19: ...19 Lifting and Installation...

Страница 20: ...tioning adjustments 15 Adjust platform to a clearance of 1 minimum around perimeter between platform and pit angle NEVER go under a raised lift platform until load is removed and lift is securely bloc...

Страница 21: ...HILTI Kwik Bolt Molly Parabolt or similar 1 Verify lift is positioned correctly 2 Raise the platform and install the maintenance leg see Maintenance Device Instructions section 3 Drill holes in concre...

Страница 22: ...22 4 6 Bridge Lifting Chain Installation Steel Bridge...

Страница 23: ...23 4 7 Bridge Lifting Chain Installation Aluminum Bridge...

Страница 24: ...24 4 8 Bridge Winch Installation Steel Bridge...

Страница 25: ...25 4 9 Bridge Winch Installation Aluminum Bridge...

Страница 26: ...26 4 10 Pit Modification Installation for Mechanical Wheel Chock...

Страница 27: ...Select from the following mounting configurations Raise one side of skirt along with a skirt mounting bar 1 8 x 1 to side of bevel toe guard When possible center skirt mounting collar and skirt mount...

Страница 28: ...sired position Do not operate lift on relief for more than a few seconds When on relief valve will make a squealing sound 3 Press DOWN button to lower lift Release button when lift reaches desired pos...

Страница 29: ...ove the load from the lift prior to blocking could cause the failure of the maintenance device and allow the lift to fall unexpectedly This can result in personal injury or death 2 Raise the lift to i...

Страница 30: ...30 Figure 6 1...

Страница 31: ...tag out procedures Disconnect and tag all electrical and or other power sources to prevent an unplanned or unexpected actuation of the lift 7 Once inspection or work is complete reverse the performan...

Страница 32: ...h Or 100 Hours Of Operation Check quality of oil Replace if discolored oxidized cloudy or otherwise contaminated Do not overfill reservoir Always use clean fluid Inspect lift cylinder rods for scoring...

Страница 33: ...eel Tube Tank for Internal Power Units Oil capacity is approximately 2 gallons or 8 quarts Oil level should be 1 to 1 1 2 below the top of the reservoir Use approved fluids only Use of unauthorized fl...

Страница 34: ...ylinder Pull piston rod out to remove upper bearing 4 After all internal components have been removed inspect inner walls of barrel Use a cylinder hone to remove any apparent nicks or scratches Clean...

Страница 35: ...35 Figure 6 3 Cylinder Seals...

Страница 36: ...or sealing 1 Check that lift anchors are tight when used Check all pins and other mechanical and hydraulic connections 2 Restore oil level See oil recommendations in Oil Requirements section 3 Turn on...

Страница 37: ...to threads and install fuse to cylinder with arrow pointing away from cylinder Tighten fuse 3 Fill reservoir to full mark if necessary with proper oil 4 Check all fitting connections for hydraulic le...

Страница 38: ...38 6 3 5 Schematics and Field Wiring Details Electric Schematic 5HP 3Ph Contractor or Vertical Power Unit...

Страница 39: ...39 Electric Schematic 5HP 3Ph Continuous Running Vertical Power Unit...

Страница 40: ...40 Electric Schematic 5HP 1Ph 230V Vertical Power Unit...

Страница 41: ...41 Electric Schematic 3HP 1Ph 115V Vertical Power Unit...

Страница 42: ...42 Hydraulic Schematic Contractor Power Unit...

Страница 43: ...43 Hydraulic Schematic Vertical Power Unit...

Страница 44: ...44 Hydraulic Schematic Continuous Running Vertical Power Unit...

Страница 45: ...45 Push Button Wiring Diagram...

Страница 46: ...46 Guarded Foot Switch Wiring Diagram...

Страница 47: ...47 Guarded Foot Switch Assembly...

Страница 48: ...48 Optional Limit Switch Mounting Diagram PLTC 6050 to 6060...

Страница 49: ...49 Optional Limit Switch Mounting Diagram PLTC 6070 to 58150...

Страница 50: ...tag out procedure See Maintenance Devices section Pressurized fluids can penetrate the skin Hydraulic hoses can fail from age damage and exposure Do not search for hydraulic leaks without body and fa...

Страница 51: ...y be seized if motor is humming or blowing fuses on overload protection devices Remove pump Pump can be rotated by hand unless seized Check for cracks in housing Down solenoid valve stem may be bent c...

Страница 52: ...pressurize lifting cylinder by pressing UP button on controller for a few seconds Immediately release UP button and press DOWN button If lift starts to lower continue pressing DOWN button until lift...

Страница 53: ...ile pump is idling Inadequate wiring can starve motor even when source voltage is ample Most of Autoquip s standard motors are rated for intermittent duty If a single phase motor is being run more tha...

Страница 54: ...54 7 PARTS LISTS Contractor Power Unit...

Страница 55: ...55 Vertical Power Unit...

Страница 56: ...56 Continuous Running Vertical Power Unit...

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