28
Item Method Discard limit or criteria Action
Body Visually check the Pawl Shaft. • Pawl shaft should be secured to Body. Replace the Body
Assembly.
Visually check and measure
the bearing hole of Frames
A and B for the Load Sheave
with a vernier caliper.
• Should be free of substantial deformations
or aws.
• The dimensional difference between "a" and
"b" should be 0.5mm or less.
Replace the Frame A or
B.
Visually check and measure
the bearing holes of Frame
B for the Gear with a vernier
caliper.
• Should be free of signicant deformations or
aws.
• The dimensional difference between "a" and
"b" should be 0.5mm or less.
• Should be free of deformation of the Frame.
Replace the Frame B.
Visually check the
deformation and aw of the
Gear Case.
• Should be free of signicant deformations,
aws or cracks.
Replace the Gear Case
Assembly.
Visually check and measure
the abrasion of holes of the
Gear Case for the Plain
Bearings with a vernier
caliper.
• Should be free of signicant deformations or
aws.
• The dimensional difference between "a" and
"b" should be 0.5mm or less.
Replace the Gear Case
Assembly.
Visually check and measure
the deformation and abrasion
of the Top Pin with a vernier
caliper.
• Signicantly deformed Top Pin has reached
the discard limit.
Replace the Top Pin.
a
b
Plain Bearing
a
a
Frame A
Frame B
a
Pawl Shaft
Rated load (t)
Dimension A (mm)
Standard Limit
0.25 8 7.6
0.5
10 9.6