Jacking block slips, hits worker on the head

Safety Alert Type: 
Hand and Power Tools
Kendrick Arm, Nootka Island (west coast)
Date of Incident / Close Call: 
Company Name: 
Nootka Sound Timber
Details of Incident / Close Call: 

A mechanic’s helper was installing the left upper rear torque arm on an off-highway logging truck. The worker drove the truck into the shop over the mechanic’s pit, and proceeded with the installation.

The worker was using an 8 ton bottle jack weighing 14lbs, with a 4x6 18 inch long block of wood weighing 7 pounds. The worker positioned the bottle jack in conjunction with the block of wood to separate the drive axle housings to allow installation of the torque arm.

The jack was placed against the left side tractor axle and the block was placed against the trunion. The worker pumped the jack and adjusted the block of wood, once the block of wood was holding, he started to install the torque arm. This is when the block of wood slipped and struck the worker on the right side of his head.

Learnings and Suggestions: 

Always ensure when using bottle jacks and blocks that they are placed correctly for the job task. Ensure jacks and blocks are secure on flat surfaces and are rated correctly for the task.

For more information on this submitted alert: 

For more information: Nootka Sound Timber (250) 830-2292

File attachments
Jacking block slips, hits worker on the head.pdf
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