MM2600, Lesson 1
Figure 1-5. Wrecker Crane, M543.
The 5-ton crane (figure 1-6) is powered by a diesel engine. It is wheel mounted and has a telescoping
boom, a 6-foot manual boom extension, and a front-end-mounted bulldozer blade. It is designed for
rough terrain and can go through water up to 36 inches deep. It is center mounted on its carrier and
hydraulically operated. The boom has a full 360-degree continuous rotation capability. When the
boom is retracted, it is 12 feet long from the front end to the swing center. When extended, it is 20
feet long. It may be extended another 6 feet by adding the manual extension. The boom is equipped
with an hydraulically-operated cable hoist. The carrier is equipped with four independently-operated
Figure 1-6. 5-ton Crane.