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3.2.3. HOOKS ASSEMBLIES
UPPER AND LOWER HOOKS
HOOK MOUTH
• If the hook has stretched it must be replaced since it has lost the required strength and shock absorbing capability.
• Replacement must be made when the dimension A shown in Fig.21 has exceeded the limit shown in the table below.
• Do not use heat to repair the hook as the strength of the hook would be substantially reduced.
FLAWED, WORN OR BENT HOOKS
Such hooks as are found in Fig.22-24 must also be replaced.
• Fig.22, A flaw is clearly apparent.
• Fig.23, Wear exceeds the allowable limit (specified below).
• Fig.24, A bend can be visually detected.
Figure 21
Figure 22
Figure 23
Figure 24
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