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Figure 1-2.  Servicing Unit Body Assembly. (Sheet 2)
Figure 1-3.  Servicing Unit Trailer Assembly.  (Sheet 2)

TM-5-4220-233-14 Trailer Mounted Type I Manifold Servicing Unit Trailer Mounted Type II Manifold Servicing Unit Oxygen Booster Pump Oxygen Charging Station Manual
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TM 5-4220-233-14 c. Mobile Compressed Gas Servicing Unit Trailer Assembly. 1 Chassis Weldment.  Provides the foundation for the Body Assembly and trailer components and the lifting / tiedown provisions. 2 Axle Assembly.  Provides the foundation for the running gear and suspension Contains the leaf springs, shock absorbers, hubs, and brake drums. 3 Wheel and Tire Assembly.  Provides road and cross country mobility for the Servicing Unit.  A spare tire is mounted under the chassis frame. 4 Surge Actuator.  Contains a master cylinder and provides the actuation force to apply the trailer service brakes.  Contains the lunette eye that connects to the pintle hook connection on the towing vehicle. 5 Safety Chains.  Used to keep the trailer connected to towing vehicle in the event that the lunette eye to the pintle hook connection fails. 6 Handbrake Lever.  Manually operated lever used to apply or remove the parking brake. 7 Chock.  When placed next to the tire, prevents trailer movement on a downward slope. 8 Trailer Tool Box.  Weather-tight box used to store trailer tools and non-breathing air parts. Figure 1-3.  Servicing Unit Trailer Assembly. (Sheet 1 of 2) 1-8







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