Title: Check the pintle hook assembly, operation, and mounting, if applicable.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Frame and Fifth Wheel

Checking should include

- inspecting the locking mechanism for missing or broken parts
- making sure it locks securely when closed
- examining the pintle hook for cracks, breaks, excessive wear, or missing components
- examining for recent welded repair(s)
- inspecting the pintle hook cross member mounting points for cracks or missing fasteners
- confirming free movement of all moving parts.

If present, safety cables or chains must be secure and free of kinks and excessive slack.

ASE 4: IV. Suspension and Steering: H. Frame and Coupling Devices (P-2)

Process/Skill Questions:

- Why should a pintle hook never be repaired by welding?
- What does it indicate when shiny metal is visible where the pintle hook mounts to the cross member?
- When doing the inspection, what action should be taken when the safety pin is found missing?