NHTSA Campaign Id 88V102000; Date: Jun. 27, 1988
If one of the fittings break, the hydraulic fluid islost, resulting in loss of power steering and possibly a crash.
1988 Mack Rd Series
Component: Steering:gear Box (other Than Rack And Pinion)
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 140
Compression of front springs could interfere with the 90 degree crossover fittings on the bottom of the gears.
Replace center port steering gear cylinder heads with new side port cylinder heads. Also, install thicker bumper stops to eliminate spring to gear contact.
System: steering gear. Vehicle description: heavy duty trucks equipped with sheppard dual steeringgears and 34. 5 inch spring centers.
Date Owners notified by Manufacturer: Jun 22, 1988
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