Releasing Brakes Manually - Skyjack SJ85 AJ Operating Manual

Section 6 – Additional Procedures

6.3-1 Releasing brakes manually

Brakes must be manually disengaged for winching or
towing.
WARNING
Do not manually disengage brakes if MEWP is on
a slope.
1. Ensure MEWP is on level ground. Chock or
block wheels to keep MEWP from rolling.
2. Turn main power disconnect switch to off
position.
CAUTION
Do not use hydraulic power with brake
disengaged.
3. Locate the bypass valve on the inboard side
of the drive pump. Bypass the drive pump by
loosening the valve stem (item
yellow paint - Figure
1
Figure 29 Drive bypass valve
CAUTION
Do not release brakes before disengaging drive
motor.
4. Push in black brake valve plunger (item
Figure 29).
213217AAA
70
- marked with
1
28) 90 degrees clockwise.
-
3
2
1
Figure 30 Brake manifold
5. Actuate red hand pump (item 1) slowly by
moving knob in and out until pressure gauge
(item 2) (if equipped) registers 300 psi/21
bar. DO NOT exceed 350 psi/24 bar. Brake is
now released. If MEWP is not equipped with
a pressure gauge, refer to the service manual
for instructions on how to install the pressure
gauge.
WARNING
Brakes must be applied immediately after reaching
desired location. Refer to
reengage brakes.
Winching and Towing Procedures
3
Section 6.3 on how to
SJ85 AJ