CHAIN BLOCK
SAFETY OPERATIONS & PARTS MANUAL
I
9
CH A IN BL O CK
HOOK INSPECTION
Hooks damaged from chemicals, deformations or cracks that have more
than a 10º twist from the plane of the unbent hook or excessive opening
or seat wear must be replaced.
Also, hooks that are opened and those that allow the latch to disengage
the tip, must be replaced. Any hook that is twisted or has excessive throat
opening or eat wear must be replaced.
Any hook that is twisted or has excessive throat opening, indicates abuse
or over loading of the unit. Other load sustaining components of the chain
block should be inspected for damage. The chart above should be used to
determine when the hook must be replaced. To measure throat opening,
depress the latch against the hook body as shown above.
Also check to make sure that the latch is not damaged or bent and that
it operates properly with sufficient spring pressure to keep the latch
tightly against the tip of the hook and allow the latch to spring back to
the tip when released. If the latch does not operate properly, it should be
replaced.
LOAD CHAIN
Cleaning and Inspection
First clean the load chain with a non-acid or non-caustic type solvent
then slack the chain and make a link by link inspection for nicks, gouges,
twisted links and excessive wear or stretching.
Worn chain should be gauged throughout its entire length and replaced if
beyond serviceable limits.
Measure
Opening
Hook Throat Opening
Twisted
DO NOT USE
Normal
CAN BE USED
10˚ Max.
Number of
Links in Gauge
Gauge
Length
Measure
Opening
Hook Throat Opening
Twisted
DO NOT USE
Normal
CAN BE USED
10˚ Max.
Number of
Links in Gauge
Gauge
Length
MAINTENANCE
Содержание 3S 503025
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