IFSTA Aerial Chapter 7 Stabilzing the Apparatus Flashcards
How much air pressure does the PTO require to be operated in pneumatic systems
50 to 140 psi
How much clearance should be between the chocks and the wheels to prevent it from getting stuck while aerial is moving
1 inch
Which wheels should be chocked when stabilizing vehicle
Manufacturer specific
What occurs when placing jack plates over frozen ground
As ice melts, it leaves air between the stabilizer pad and the ground.
Driver must constantly monitor and be prepare to lower them for maximum contact upon thawing
What is the usual size of the stabilizer pad provided by manufacturers
24 x 24 inches
Between side to side or front to back which unevenness is easiest to correct
Side To Side (lateral)
Up to what percent can lateral unevenness be corrected
5 to 6 percent
When correcting side to side unevenness which side is best to operate the aerial over
Over the Uphill side
When operating front to rear uneven terrain what placement should be avoided with apparatus
Apparatus should not be placed crosswise on the grade
When parked on the _______ grade, do not _______ or ______ the aerial device over the side of the apparatus
Longitudinal grade do not extend or retract
What prevents flow of hydraulic fluid into or out of the stabilizing system when using the aerial
An Interlock
When stabilizing a tractor drawn truck what angle must be avoided
greater than 90 degree angles
