Item
Method
Discard criteria
Remedy
5. Brake system
5.1 Rust
Check visually
All parts should be free from rust.
Remove rust,
oil the parts or
replace
5.2 Flaw on
friction disc
Check visually
Should be free from flaws.
Replace
5.3 Wear on
friction disc
Measure
Retain uniform thickness and friction disc shall
not be worn more than 0.5mm.
Replace
5.4 Flatness of
friction disc
Check clearance
with gauge
Clearance should be uniform. Internal part
should not be thicker than external part.
Replace
5.5 Pawl
Check visually
Should be free from wear on the surface.
Replace
5.6 Pawl spring
Check visually
Should be free from deformation.
Replace
5.7 Ratchet disc
Measure
Measure the external diameter A of ratchet disc.
Replace
5.8 Clutch spring
Measure
Measure the length
0.75t L≤31.5mm A≤15°
1.5t L≤31.5mm A≤15°
3~9t L≤34.2mm A≤40°
Replace
6. Lifting system
6.1 Load sheave
Check visually
Should be free from wear and deformation.
Replace
6.2 Gears
Check visually
Teeth should be free from excessive wear or
flaws.
Replace
6.3 Gear box
Check visually
Should be free from wear or deformation.
Replace
7. Lever handle
system
7.1 Hand lever,
feed ratchet,
spring pin
Check visually
Should be free from wear or deformation.
Replace
7.2 Torsional
spring
Measure
Measure the length
0.75t L≤59.4mm A≤165°
1.5t L≤59.4mm A≤165°
3~9t L≤63.9mm A≤165°
Replace
-7-
Capacity (t)
Thickness of friction disc (H)
Standard
Discard
0.75 ~ 9
3mm
≤2.5mm
Capacity (t)
Diameter A (mm)
Standard
Discard
0.75
74.5
≤71.5
1.5
85.0
≤83.0
3
94.0
≤91.0
6
94.0
≤91.0
9
94.0
≤91.0
