Final answer:
Both technicians are correct; starwheel adjusters use different threads for different sides of a vehicle and should be lubricated with brake grease before installation.
Step-by-step explanation:
Technician A is correct in stating that starwheel adjusters use different threads (left- and right-handed) for the left and right sides of the vehicle. This is to ensure that the adjusters tighten by rotating in the direction that the wheels are most commonly turning, which helps maintain proper brake shoe adjustment.
On the other hand, Technician B is also correct; the threads and end caps of the adjusters should be lubricated with a high-temperature lubricant or brake grease before being installed. Proper lubrication helps to prevent seizing and corrosion, which can affect the adjustability of the brakes over time.
Technician A is correct. Starwheel adjusters do use different threads for the left and right sides of the vehicle, but they are not left- and right-handed threads. Instead, they use different threads to compensate for the directional forces on the adjusters.
Technician B is also correct. Threads and end caps of the adjusters should be lubricated with brake grease before installation. This helps to reduce friction and ensure smooth operation of the adjusters.