216380ACA SJ3215, SJ3219, SJ3220, SJ3226, SJ4726, SJ4732, SJ4740
60
Section 6 – Procedures
Open the freewheeling valve
6.2 Open the freewheeling
valve
1. Make sure that the MEWP is on firm, level
ground.
2. Put wheel chocks or blocks at the front of the
wheels and behind them to prevent MEWP
movement.
3. Turn the freewheeling valve knob
1
counterclockwise to a fully open position.
1
Figure 11 Freewheeling valve at the front of the base
(SJ3215, and SJ3219)
1
Figure 12 Freewheeling valve at the rear side of the
base (SJ3220, SJ3226, SJ4726, SJ4732, and SJ4740)
IMPORTANT
Make sure you tightly close the freewheeling valve,
before you operate the MEWP.
6.3 Release the brakes
manually
WARNING
Do not manually disengage the brakes if the
MEWP is on a slope. If you do not obey, there is a
risk of death or serious injury.
1. Make sure that the MEWP is on firm, level
ground.
2. Use wheel chocks or blocks at the front and rear
of the wheels to prevent MEWP movement.
3. Turn the main power disconnect switch to the
off position.
4. Open the freewheeling valve. Refer to
Section 6.2.
5. For pin brakes (SJ3215, SJ3219, SJ3220,
SJ3226, SJ4726, SJ4732):
a. Turn the left pin brake block 90° clockwise
with a 19 mm (3/4 in) wrench to release it. The
brake pin must not touch the brake disc.
b. Turn the right pin brake block 90°
counterclockwise with a 19 mm (3/4 in)
wrench to release it. The brake pin must not
touch the brake disc.
Figure 13 Brake release block (pin brakes)
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