NHTSA Campaign Id 85V158000; Date: Nov. 26, 1985
1979 Western Rl Series; 1980 Western Rl Series; 1979 Western Rs Series; 1980 Western Rs Series
Component: Structure:frame And Members
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 1,575
The right hand frame rail lower flange could develop cracks due to poor grinding methods at stress points. Consequence of defect: frame failure could occur without warning and could result in loss of control and possibly a crash.
Remove and replace frame rail as necessary or ground out and dress to eliminate any stress risers that may develop.
System: frame rail. Vehicle description: heavy-duty trucks with ross or garrison power steering with eaton power steering pump.
Date Owners notified by Manufacturer: Jan 13, 1987
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