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TROUBLE SHOOTING

Worn-out friction discs.

Excessive oil on the braking surface.

Incorrect assembly of the brake system.

Replace with new friction discs.

Disassemble and clean.

Assemble correctly. (See Figures 15 & 16)

Slip caused by ineffective braking.

Damaged friction discs.

Foreign matters in the braking system.

Replace with new ones.

Disassemble and clean.

Load dropped while lowering.

Over-tightening of the brake.

Operate the lever hoist as if lowering a load.

Jammed operating handle.

Wear or deformation of the load chain and load sheave.

Replace with new parts.

Noises during hoisting and lowering operation.

Over-hoisting or over-lowering.

Twist in the load chain causing it to get caught between
load sheave and load chain guide.

Operate the hoist in opposite direction.

Operate the hoist in opposite direction and remove the
twist from the load chain.

Operating handle becomes difficult to operate during lifting or lowering operation.

––– Probable Cause –––

––– Remedy–––

NOTE: Refer to Figures 15 & 16 for parts lists.

LMSC.qxd 7/11/2002 4:20 PM Page 8

www.stlcrane.com

McLaughlin Hoist & Crane

(636) 343-9700

Authorized Sales & Service - McLaughlin Hoist & Crane - For Parts or Serivce Call (636) 343-9700

Содержание LMSC Series

Страница 1: ...ent as directed in the manual may cause injury Should you have any questions regarding this product please call Little Mule at 800 477 5003 Before using the hoist fill in the information below Model No Serial No Purchase Date Follow all instructions and warnings for inspecting maintaining and operating this hoist 3 4 to 6 Ton Model Numbers LMSC1500 LMSC3000 LMSC6000 LMSC12000 Operating Maintenance...

Страница 2: ...k in the direction of loading 14 NOT use load chain as a sling or wrap load chain around load 15 NOT apply the load to the tip of the hook or the hook latch 16 NOT apply load unless load chain is properly seated in the chain wheel s or sprocket s 17 NOT apply load if bearing prevents equal loading on all load supporting chains 18 NOT operate beyond the limits of the load chain travel 19 NOT leave ...

Страница 3: ... on lever at the same time More than one operator is likely to cause hoist overload 14 NOT allow your attention to be diverted from operating the hoist 15 NOT allow the hoist to be subjected to sharp contact with other hoists structures or objects through misuse 16 NOT adjust or repair the hoist unless qualified to perform such adjustments or repairs 17 NOT expose the unit to high temperatures in ...

Страница 4: ...hook being accidentally turned over through the load chains See Figure 3 4 Confirm that the supporting structure is strong enough to support the full rated capacity of the lever hoist with a generous factor of safety 3 Guide Handle Selector Lever Operating Handle Rated Std Chain Minimum Pull on Length of Net Test Capacity Lift dia Distance lever to operating Weight Load tons ft x falls Between lif...

Страница 5: ...ay cause the hook to elongate or bend These hooking methods may also obstruct the load chain flow to the load sheave and prevent the lever hoist from operating properly 6 Never run the chain out too far When the lever hoist is run out beyond the range of lift a dangerous excessive load will be imposed on the load chain stop grip and gearing 7 The selector lever must be set to the UP position when ...

Страница 6: ...tion is for making quick large adjustments of the load chain length without load Set the selector lever to the N position and pull the load chain out in the desired direction Free chaining will not be possible during the following conditions 1 When the lever hoist is under a load 2 When the guide handle is in contact with something and not rotating freely 3 When the brake has locked from a large o...

Страница 7: ... gears and bearings are well lubricated LOAD CHAIN Load chains worn out or elongated beyond the permissible dimensions must be replaced at once Replace the entire load chain immediately even if one link of the load chain is extensively worn out elongated or damaged HOOKS If the hook opening is elongated beyond the permissible dimension the hook is dangerously deformed and must be replaced at once ...

Страница 8: ... No 110 If the load limiter cannot be corrected by adjusting the torque setting or if any of the parts are damaged then the load limiter must be replaced A special tool is required to adjust Item 110 properly Contact Factory Hoist Torque Range Model foot lbs LMSC1500 28 32 LMSC3000 59 66 LMSC6000 77 85 LMSC12000 77 85 NOTE Excessive torque will damage the load limiter and could cause equipment dam...

Страница 9: ...e Wear or deformation of the load chain and load sheave Replace with new parts Noises during hoisting and lowering operation 1 Over hoisting or over lowering 2 Twist in the load chain causing it to get caught between load sheave and load chain guide 1 Operate the hoist in opposite direction 2 Operate the hoist in opposite direction and remove the twist from the load chain Operating handle becomes ...

Страница 10: ...seness stripped or damaged threads Rivets Supporting Damage or wear which restricts ability to support Structure imposed loads Capacity Plate Missing damaged or illegible Decals NOTE Refer to Maintenance and Inspection Sections of the Hoist Maintenance Manual for further details FREQUENCY OF INSPECTION Frequent Indicates items requiring inspection daily to monthly Daily inspections may be performe...

Страница 11: ...pection 15 16 Pinion Shaft Gear base bearing grease see Figure 13A Bearings Pinion Gear Teeth See Figures Bottom Block Shaft SAE 20 30 machine oil Monthly Yearly Yearly 15 16 Bearing Hook Swivel This lubrication schedule is based on a hoist operating in normal environmental conditions Hoists operating in adverse atmospheres containing excessive heat corrosive fumes or vapors abrasive dust etc shou...

Страница 12: ... 6 28 11 24 38 26 5 10 4 9 12 7 30 8 30 20 14 15 34 21 36 37 31 39 35 17 27 16 18 33 32 LMSC qxd 7 11 2002 4 24 PM Page 11 www stlcrane com McLaughlin Hoist Crane 636 343 9700 Authorized Sales Service McLaughlin Hoist Crane For Parts or Serivce Call 636 343 9700 ...

Страница 13: ... IRB5048U KRB5048U 1 23 Yoke Pin IRB5051 KRB5051 1 24 Bottom Hook Assembly IRB5053U KRB5053U 1 25 Collar for Pinion Shaft IRB5059 IRB5059 1 26 Hook Latch Assembly GRB5074T KRB5074T 2 27 Change Over Spring IRB4101 IRB3116 1 28 E Ring SRE8 SRE9 2 29 Pawl Spring IRB5104 KRB5104 2 30 Brake Lining IRB5105 KRB5105 2 31 Free Chaining Spring IRB5106 KRB5106 1 32 Spring Nut HSN1M8 HSN1M8 8 33 Spring Nut HS...

Страница 14: ...29 3 22 30 23 12 9 10 5 4 7 34 8 34 20 14 15 38 35 21 40 36 37 18 16 31 17 39 43 41 Used on 6 Ton Models Used on 6 Ton Models LMSC qxd 7 11 2002 4 29 PM Page 13 www stlcrane com McLaughlin Hoist Crane 636 343 9700 Authorized Sales Service McLaughlin Hoist Crane For Parts or Serivce Call 636 343 9700 ...

Страница 15: ...ock Frame QRB50533 2 26 Idle Sheave QRB5055 1 27 Wheel Pin QRB5056 1 28 Collar for Idle Sheave HH4100083 2 29 Collar for Pinion Shaft NRB5059 NRB5059 1 30 Hook Latch Assembly KRB5074T PRB5074T 2 31 Change Over Spring IRB3116 IRB3116 1 32 E Ring SRE9 SRE9 2 33 Pawl Spring NRB5104 NRB5104 2 34 Brake Lining KRB5105 KRB5105 2 35 Free Chaining Spring NRB5106 NRB5106 1 36 Spring Nut HSN1M10 HSN1M10 8 37...

Страница 16: ...thout charge and the hoist will be returned transportation prepaid This warranty does not apply where deterioration is caused by normal Overloading and Improper Use Can Result In Injury TO AVOID INJURY Do not exceed working load limit load rating or capacity Do not use equipment to lift people or loads over people Use only alloy chain and attachments for overhead lifting Read and follow all instru...

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