Mechanic nearly struck by runaway logging truck

Safety Alert Type: 
Heavy Equipment
Nootka Forest Operation (Vancouver Island)
Date of Incident / Close Call: 
Company Name: 
Western Forest Products
Details of Incident / Close Call: 

A mechanic was changing the slack adjuster on a left (drivers’ side) tractor axle brake on an off-highway log truck. The truck was parked on a slight downhill slope (approx. 2-3%) with the nose of the truck pointed downhill.

The mechanic used a 4x4 wooden block to chock the right steering axle tire, released the tractor brakes, then crawled under the truck and pounded the clevis pin out of the clevis on the left front drive axle brake.

He then heard a bang and the truck rolled ahead over top of the mechanic. As the truck rolled it knocked the mechanic down and both differentials passed over top of him. His coveralls were torn as a result.

The truck ran into a sand truck parked across the yard fifteen feet away. The truck flattened the outer rear dual tire on the sand truck. The mechanic had been sitting facing the rear of the truck and had just moved away from the wheels. The 4x4 block at the steering axle was squashed into the ground slightly.

Learnings & Suggestions:

• Discuss with personnel the need to use air-line to release only one wheel brake to do service work instead of releasing all four wheel brakes whenever possible

• Ensure good wheel chocks suitable for off-highway trucks are available and used in the field and at both shop locations

• Inspect vehicle and equipment securement practices at every opportunity. Ensure vehicle or equipment cannot drop, roll, or inadvertently move in any manner.

For more information on this submitted alert: 

For more information, contact: Bob Glisinski: 250-283-2840

File attachments
Mechanic nearly struck by runaway logging truck.pdf
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