Direct Lift PP8S - Manual (Page 23)

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2.2 Fully raise lift. Inspect sheaves (pulleys) in runway ends with lift in raised position.
a. Visually inspect alignment of sheaves, see figure above. Misalignment of sheave(s) indicates
excessive wear; the sheave(s) and sheave pin should be removed and inspected. Replace as
required.
b. Hold lowering handle down to lower lift onto latches. Pull on cables under runway to create cable
slack.
c. Check for excessive side to side wobble. Grasp rim of sheave and attempt to wobble (tilt) side to side,
refer to figures above. If sheaves wobble (tilt) more than 1/16” (1.6 mm) side to side, or move in and
out more than 1/32” (0.8 mm), the sheave and sheave pin (shaft) should be replaced, refer to figures
above.
3. Hydraulic Cylinder
Inspect the hydraulic cylinder mounting to the runway. Inspect cylinder and hydraulic hoses for leaks. Repair or
replace as required.