A commercial driver is preparing to check the pushrod free play on a vehicle equipped with manual slack adjusters. Arrange the following steps in the correct operational sequence from first to last.
- 1Position the vehicle on level ground and place chocks securely against the tires to prevent rolling.
- 2Shut down the engine and release the parking/emergency brakes from inside the cab.
- 3Reach underneath the vehicle with a gloved hand or pry tool and firmly pull on the slack adjuster.
- 4Verify that the pushrod stroke does not move more than approximately 1 inch from the brake chamber.
Answer
1. Position the vehicle on level ground and place chocks securely against the tires to prevent rolling. 2. Shut down the engine and release the parking/emergency brakes from inside the cab. 3. Reach underneath the vehicle with a gloved hand or pry tool and firmly pull on the slack adjuster. 4. Verify that the pushrod stroke does not move more than approximately 1 inch from the brake chamber.
The correct sequence begins with vehicle stabilization via wheel chocks, followed by releasing the cab parking control so the foundation linkage is unloaded. Once free, the technician pulls the slack adjuster to measure stroke distance, confirming it stays within the 1-inch maximum allowable tolerance.
Step-by-Step Solution
Key Concept
Manual Slack Adjuster Pushrod Travel Inspection Procedure
Estimated Time:45s