N3

N3 CHECK WHEEL TURNING TORQUE, FRONT WHEELS

- Put transmission in "Neutral"

CAUTION: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the rear jack storage area. Failure to do so may result in unexpected inflation or deflation of the air springs which may result in shifting of the vehicle during these operations.

Raise and support the vehicle.

- Apply 455 N (100 lbs) of force on the brake pedal and hold for 15 seconds.

- While holding brakes, exert 101 Nm (75 ft. lbs.s) of torque on the front wheels.

- Does either wheel rotate?

> Yes
Repair or replace the brake master cylinder. Master Cylinder, Brakes

> No
Front chamber of brake master cylinder check OK. Perform Pinpoint Test N4. N4