6.0Maintenance and Handling

6.1Lubrication

6.1.1Load Chain

For longer life, the load chain should be lubricated.

The load chain lubrication should be accomplished after cleaning the load chain with an acid free cleaning solution.

Apply Harrington lubricating grease (Part No. ER1BS1951) or an equivalent to industrial general lithium grease, NLGI No. 0, to the bearing surfaces of the load chain links as indicated by the shaded areas in Figure 6-1. Also apply the grease to the areas of the load chain (shaded areas in Figure 6-1) that contact the load sheave. Insure that the grease is applied to the contact areas in the load sheave pockets.

Machine or gear oil (grade ISO VG 46 or 68 oil or equivalent) may be used as an alternative lubricant but must be applied more frequently.

Figure 6-1 Chain Grease Application

The chain should be lubricated every 3 months (more frequently for heavier usage or severe conditions).

For dusty environments, it is acceptable to substitute a dry lubricant.

6.1.2Hooks and Suspension Components:

Hooks – Bearings should be cleaned and lubricated at least once per year for normal usage. Clean and lubricate more frequently for heavier usage or severe conditions.

Hook Yokes and Latches – Lubricate the hook yokes and hook latches at least twice per year for normal usage; more frequently for heavier usage or severe conditions.

Suspension Pins - Lubricate the chain pin and the top pin at least twice per year for normal usage; more frequently for heavier usage or severe conditions.

6.1.3Applying Grease to Gears:

Remove gear case as instructed in Section 6.3.

Remove old grease and replace the new grease (NLGI No. 3), at annual inspection.

Temperature range of standard grease is -20˚C (-4˚F) to + 60˚C (140˚F). If the hoist is used at temperatures below -20˚C (-4˚F) or above 60˚C (140˚F), consult the manufacturer or dealer since some parts should be changed.

Table 6-1 General Lubrication

Parts to be Lubricated

Name of Oil

Amount of Lubrication

Frequency of

and Lubricating Method

Lubrication

 

 

Mechanical Brake Parts:

Machine or

Wipe off oil with waste

When the hand pull

Ratchet Disc, Pawl Pin,

cloth after applying

becomes extremely heavy

Gear Oil

Screw parts of Pinion

proper amount of oil.

in lowering operations.

 

 

 

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