A、cam rollers on the camshaft
B、spring force
C、air pressure on top of the valve differential piston
D、air pressure on the bottom of the valve differential piston
更多“Starting air valves are held firmly on their seats by（）”相关的问题
A、Holding the valve open for a long period B、Increasing the starting air pressure used C、Opening the stating air valve quickly D、Reducing the starting air valve size
A、the starting air distributor B、the cut-off valve on the air main C、the main starting valve D、the air bottle control valve
A、noise coming from that air starting valve B、continuous operation of the starting air compressor C、zero air pressure in the air starting system D、overheated starting air pipe to the cylinder head
A、starting air pressure too high B、correct timing of starting air valves C、three of the starting valves stuck D、the turning gear disengaged
A、starting air pressure too high B、correct timing of starting air valves C、three of the six starting valves stuck D、the turning gear disengaged
A、the air start valve timing gears and rods B、a cylinder check valve C、individual cams and valve gear D、an air manifold poppet valve
A、an air start cam B、cylinder compression pressure C、starting air pressure D、valve springs
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