TM 9-2330-390-14&P2-2. CONTROLS AND INDICATORS (Con’t).STEERING SYSTEMKey1Control or indicatorSteering Locking Pin(Front Dolly)FunctionLocks steering link to limit front drawbar side movement. Usedwhen backing dolly set in a straight line and when operating frontdolly in maneuvering position.BRAKE SYSTEMKeyControl or indicatorFunctionI2Shutoff Valve LeversOpened to supply air to a second dolly set when tandem towing.(Rear Dolly)Closed when tandem towing is finished.I2-2
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