Snorkel S3215E, Operator'S Manual, Page: 69 / 90

Chapter 11 – Emergency Operation
S3215L/S3215E/S3219E/S3220E/S3226E/S4726E/S4732E – 1500834 61
Valves with Brake Release/Free-Wheeling Valve on
Back of Valve
1. Chock the wheels to prevent uncontrolled motion of
the aerial platform and turn the battery disconnect
switch off.
2. Unlatch and swing out the control valve tray on
the right side of the machine. The brake release/
free-wheeling valve is located on the back of the
hydraulic manifold (refer to Figure 11.5).
Figure 11.5 – Hydraulic Tray
Brake Release
Free-Wheeling Valve
Brake Release Pump
3. Turn the brake release/free-wheeling valve clock-
wise to the fully closed position. Push and release
the brake release pump knob several times, until it
becomes hard to push, to release the brakes.
4. Remove the wheel chocks.
5. Do not exceed 2 mph (3.2 km/h) when towing.
Warning
The aerial platform is free to move when the brakes
and free-wheeling valve are disabled. Death or serious
injury could result. Close the free-wheeling valve and
reset the brakes before operating the aerial platform.
6. Turn the brake release/free-wheeling valve fully
counterclockwise to the fully open position.
7. Drive the aerial platform forward or reverse and then
stop to reset the parking brakes.
8. Verify that the drive system and brakes operate
properly before operating the aerial platform.