Hitachi Mechanical Coupling Wear

Extension pipe or joints wobble or disconnect easily during use.

Possible Causes

Worn locking tabs on extension pipe, Broken latch on nozzle or main body, Deformed plastic from impact, Accumulated debris preventing full engagement

Safety first: Remove the battery.

Inspect joints: Check the locking tabs and latch mechanisms on the pipe, nozzle, and main body for cracks or wear.
Clean connectors: Remove dust and debris from the mating surfaces to ensure full insertion.
Test engagement: Reassemble and confirm that each joint clicks firmly. If any connection remains loose, replace the worn component.

Very Easy 1/5

Extension Pipe

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