Columbus McKinnon CM Hoist L

Clean the load chain with a non-acid or non-caustic type solvent.

Slack the chain and inspect each link for nicks, gouges, twisted links, and excessive wear or stretching.

Is the chain worn beyond serviceable limits?

Check gage lengths as indicated in Figure 15.

Is the chain worn beyond the indicated length, nicked, gouged, or twisted?

Ensure the chain is clean, free of twists, and pulled taut before measuring.

Examine the hoist’s chain guides, hook blocks, and liftwheel for wear.

Check for visible damage on the hook

Measure the twist angle of the hook

Is there excessive opening or seat wear?

Does the latch engage the tip of the hook?

Does the latch operate properly with sufficient spring pressure?

Does the latch spring back to the tip when released?

Ensure the area is clean and free from obstructions

Gather necessary materials: Lubriplate Bar and Chain Oil 10-R or equivalent

Inspect the load chain for dirt and debris

Clean the load chain if necessary

Apply Lubriplate Bar and Chain Oil 10-R to the load chain

Ensure natural run-off and full coverage of the lubricant

Check for external evidence of issues

Inspect brake for evidence of slippage

Test control functions for proper operation

Check load chain for proper reeving and twists

Model Specific Inspection (Models RT, RT-2, RRT and RRT-2)

Inspect shackle and lug pins for wear

Check dead end screw in lower hook block for wear and tightness

Handle and dispose of lubricants as directed in applicable material safety data sheets and in accordance with applicable local, state, and federal regulations.

Ensure the ProtectorTM is lubricated with Century Lubricants HB-11, #3 grease.

Have the gears been removed from the housing?

Coat the spline on the end of the drive shaft with a molydisulphide lubricant such as 'Super Herculon'.

Apply a light film of machine oil to the limit switch shaft threads.

Lubricate the following parts with Lubriplate Bar and Chain Oil 10-R

Apply a light film of EP Grease to the spherical surfaces of the sheave stud nut and the sheave stud nut seat.