Wednesday, June 17, 2020

Technical Service Bulletin # Mercedes Benz Truck GL 550 S-42_15-122 Date: 121213

Technical Service Bulletin # Mercedes Benz Truck GL 550 S-42_15-122 Date: 121213

Brakes - Brake Rotors Treated With Zinc Dust Spray Paint

Date: December 13, 2012

Order No.: S-B-42.15/122

Group: 42

SUBJECT: MY-All, Models 163, 164, 166, 170, 171, 172, 197, 202, 203, 204, 207, 208, 209, 210, 211, 212, 215, 216, 218, 219, 220, 221, 230,

231, 245, 251, 463

Brake Disks Treated with Zinc Dust Spray Paint

2011 Mercedes Benz Truck GL 550 (164.886) V8-5.5L (273.963) Page 130

Spray brake disk friction rings (Figure 1) of vehicles parked for an extended time with zinc dust spray paint. Apply it to various points on the outside

and inside throughout the brake rotors. By turning the wheel or moving the vehicle a few yards, the dust will spread across the entire friction ring.

This zinc dust is essential in protecting from corrosion and preventing shuddering and squeaking.