JET Tools JLH-160-5 User Manual - Page 9

The load chain supplied with your JET lever hoist is designed, manufactured, and tested for proper fit and durability. If chain should ever need replacing, for your own safety use factory replacement chain only. Use of other than factory replacement chain may cause serious injury and/or damage to the lever hoist. Never extend load chain by welding a second piece to the original. Inspecting Hooks It is important to check top and bottom hooks for proper opening and other signs of deformation or damage. Replace a hook immediately if any of the following problems are identified: • The safety latch no longer contacts the hook opening. • The vertical angle at the neck of the hook reaches 10° (see Figure 3). • Chemical corrosion or cracks on the hook. • Excessive wear on the inside surface. • The throat opening has enlarged. (See page 12 for the maximum allowable limits for the throat opening.) Do not attempt repair of a hook by heat treating, bending or attaching anything by welding. Such procedures will weaken and may cause failure of the hook. Other Inspections 1. Check for appropriate clicking sounds: With the selector lever in UP position, there will be a clicking sound when the lever handle is rotated in either direction. When the selector lever is in DOWN position, there will be a clicking sound only when the lever handle is ratcheted back into position but not as the load is lowered. If these sounds are not present, or if irregular clicking noises develop, do not use the hoist - have it inspected and repaired by an authorized service center. 2. If the lever hoist has not been used for an extended period of time, check for proper operation before putting into service. 3. The brake mechanism must be kept clean and free from dirt, water, and oil. Never allow oil to penetrate the braking mechanism. The brake should not slip while using the hoist. 9 Figure 3