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Product Maintenance

Information

Air Chain Hoist

Model

LCA750T

(Dwg. MHP2986)

Save These Instructions

Form MHD56416

Edition 

2

May 2009

45887577

©

 200

9

 Ingersoll

-

Rand Company

Summary of Contents for LCA750T

Page 1: ...Product Maintenance Information Air Chain Hoist Model LCA750T Dwg MHP2986 Save These Instructions Form MHD56416 Edition 2 May 2009 45887577 2009 Ingersoll Rand Company ...

Page 2: ...ace if necessary Observe the action of load chain feeding through hoist Do not operate a hoist unless load chain feeds through hoist and hook block smoothly and without audible clicking or other evidence of binding or malfunctioning 5 Motor If performance is poor disassemble motor and check for wear or damage to bearings and shafts Parts should be cleaned lubricated and reassembled Replace worn or...

Page 3: ...l Rand trained service technician Standard Components 1 year or 1 000 hrs 2 years or 2 000 hrs 3 years or 3 000 hrs 4 years or 4 000 hrs 5 years or 5 000 hrs 6 years or 6 000 hrs 8 years or 8 000 hrs Inspect Motor X X X X Inspect Disc Brake X X X Inspect Gearbox X X X Inspect Controls X X X X Inspect System Housings and Main Frames X X X X Inspect Trolley Motor X X X Inspect Trolley Wheel Assembly...

Page 4: ... NOTES Pass Fail Repair Replace Fasteners Gears Shafts Bearings Load Bearing Sheave Chain Guides Springs Covers Housings Hooks Bottom Actual Hook Throat Width ________ inches ________ mm Refer to Table 3 for minimum maximum acceptable widths Hook Twist maximum 10 Hook Crack Test Method Used Dye Penetrant ________ Magnetic Particle ________ Other ________ Hook Latch Brake 100 Load Test Brake Visual...

Page 5: ...trolley spacing Refer to the manufacturer s literature Air powered trolley does not operate Pendant lever sticking Check lever and restore free movement No air supply to trolley or too little CFM or psi cu m min or bar Check psi bar at trolley inlet Refer to manufacturer s specifications MAINTENANCE WARNING Never perform maintenance on the hoist while it is supporting a load Before performing main...

Page 6: ... should be used when assembling the hoist 6 When grasping a part in a vise always use leather covered or copper covered vise jaws to protect the surface of the part and help prevent distortion This is particularly true of threaded members machined surfaces and housings 7 Do not remove any part which is a press fit in or on a subassembly unless the removal of that part is necessary for repairs or r...

Page 7: ...and brake springs 203 from cover 202 4 Tap piston 204 from brake housing 207 5 Remove O rings 205 and 206 from piston 204 n Hoist Motor Disassembly Refer to Dwg MHP2973 1 Remove capscrews 427 muffler brackets 428 reducer fittings 432 and mufflers 431 from motor housing 429 2 Remove capscrews 555 and lockwashers 440 from control valve assembles 450 Remove control valve assemblies 450 tubes 425 and ...

Page 8: ...epair Use the following procedures to clean inspect and repair the components of the hoist and trolley system n Cleaning CAUTION Bearings that are loose worn or rotate in the housing must be replaced Failure to observe this precaution will result in additional component damage n Inspection All disassembled parts should be inspected to determine their fitness for continued use Pay particular attent...

Page 9: ...nstall spacer 129 followed by seal ring 128 on the outside of bearings Install retainer ring 125 to secure parts 4 Press wheel assemblies onto side plate axles 5 Secure trolley wheels on side plate axles with spacers 127 and retainer rings 126 Trolley 1 Ensure bushings 110 are installed in support 111 and trolley axle 107 2 Install sleeves 109 on trolley axle 107 3 Install supports 111 on trolley ...

Page 10: ...ke and Reduction Gear Installation Refer to Dwgs MHP2971 and MHP2972 1 Lubricate and install O rings 261 and 262 2 Carefully support brake and reduction gear assembly and locate on screw rods 153 3 Secure brake and reduction gear assembly with lockwashers 154 and nuts 115 Refer to TORQUE CHART on page 12 for torque requirements n System Installation 1 Install hook and load chain on hoist 2 Connect...

Page 11: ...t Information Manual for applicable maximum system load capacity Conduct a load test to 125 of the rated system capacity Testing to more than 125 may be necessary to comply with standards and regulations set forth in areas outside of the USA Form MHD56416 Edition 1 11 ...

Page 12: ... 10 9 Dry Lubricated PTFE Dry Lubricated PTFE M6x1 9 10 6 7 4 11 12 8 9 5 6 M8x1 25 21 23 16 18 9 11 26 30 20 22 12 13 M10x1 5 41 47 31 35 19 21 53 60 39 45 24 27 M12x1 75 71 81 54 61 32 36 91 103 68 77 41 46 M14x2 115 130 86 98 52 59 147 166 110 125 66 75 M16x2 165 187 124 140 74 84 227 257 170 193 102 116 M20x2 5 321 364 241 273 144 164 443 502 332 376 199 226 M22x2 5 439 497 329 373 197 224 605...

Page 13: ...SERVICE NOTES Form MHD56416 Edition 1 13 ...

Page 14: ...SERVICE NOTES 14 Form MHD56416 Edition 1 ...

Page 15: ...SERVICE NOTES Form MHD56416 Edition 1 15 ...

Page 16: ...www irtools com ...

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