SWDM40 OPERATION & MAINTENANCE MANUAL
Assembly：
1. Check each section of steel pipe center for foreign objects before installation
2. The procedures for Kelly assembly and disassembly are opposite. Pay attention to align two
sections. When the 2
nd
section is close to the drive sleeve of the first section, observe carefully
whether the sliding groove is aligned, and adjust slightly via excavator drive cotton driving the
set ring of the 2
nd
section. The steps can be found as below:
Kelly disassembly procedure
Method for disassembly and assembly is the same, the
order as below:
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