The picture thru a side access door is the aerial ladder base.
The hand pump is in case there are any problems with the hydraulics of the hydraulic pump.
You can then hand pump the ladder back where it needs to be.
I think all man lifts have this option.
I do know we had it on the JLG man basket, when I was still working at the power plant.

Hot Darn, We are back on topic
Don

Last edited by 2-Ton; 07/26/2019 2:33 AM.
1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!