Komatsu — recall

Automotive · Japan · 2025-10-17

Origin: 日本

Komatsu shovel loaders' hydraulic oil tank breather groove improper dimensional control may cause a gap

Country	Japan
Category	Automotive
Published	2025-10-17
Country of origin	日本
Manufacturer	Komatsu Ltd.
Models affected	WA80-8, WA100-8, WA150-8, WA200-8, WR12-8
Units affected	1269
Defect	In the hydraulic oil tank breather of shovel loaders, due to improper dimensional control of the groove that seals the cover and case, a gap may occur between the bayonet (resin) on the case side and the bayonet (aluminum) on the cover side. Additionally, due to insufficient consideration of O-ring dimensions, the compression allowance may be too small. As a result, the O-ring may not be able to sufficiently fill the gap, and if use is continued as is, hydraulic oil may leak significantly due to the internal pressure of the hydraulic oil tank.
Component	Power transmission system (hydraulic oil tank)
Remedy	For all vehicles, replace the O-rings with improved parts.
Recall number	5724
Official notice	View source ↗

What this means for sellers

Likely platform / channel actions	OEMs/dealers will run the remedy (repair, replace or refund); component suppliers in the chain may face traceback.
Self-check for comparable products	Check your comparable products' design, materials and QC records against the defect described here.
Rules & standards likely involved	the destination market's product-safety rules and mandatory standards

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