(1) Remove two screws and washers from front
(2) Remove screw and washer from front grille.
(3) Remove front grille.
(4) Apply soapy water solution to cab
floor supply hose fittings.
(5) Select RUN FLAT at CTIS ECU
(6) Check for bubbles indicating leaks.
(7) Position front grille on cab with washer and
(8) Position two washers and screws in front grille.
(9) Tighten screw to 48-60 lb-in. (5-7 N·m).
(10) Tighten two screws to 24 lb-in. (3 N·m).
SOAPY WATER LEAK TEST