SECTION 2, Page 4
SJKB Battery Powered
1. EMERGENCY LOWERING VALVE ON RISER
2. EMERGENCY LOWERING VALVE ON BOOM
3. EMERGENCY LOWERING VALVE ON JIB
1. EMERGENCY LOWERING VALVE ON RISER -
Located at the base on the riser cylinder, this valve allows
riser lowering in the event of an emergency or an
electrical system failure. Turning the valve knob
counterclockwise allows the riser to gradually lower.
Valve MUST be fully closed (clockwise) to restore normal
operation.
Figure 2-5. Emergency Lowering Valves and
Procedure Label
Emergency Lowering Valves
3
2
1
MA33N205
MA33N206
MA33N207
1. TURRET ROTATION SPEED CONTROL VALVE -
Located on the lower left side of the main manifold in
the hydraulic/electric cabinet, this rotary valve when
rotated to a fully closed position (clockwise) allows
maximum turret rotation speed. By opening the valve
(counterclockwise) the turret rotation speed can be
reduced.
Figure 2-4B. Turret Rotation Speed Control Valve
(SJKB-33i, 33C, 40i, 40C)
Base Controls - Hydraulic
Turret Rotation Speed Control Valve
Figure 2-4A. Turret Rotation Speed Control Valve
(SJKB-33N)
1
MA33N204
1. TURRET ROTATION SPEED CONTROL VALVE
1
Mawb205
SECTION 2, Page 5
SJKB Battery Powered
DANGER
DO NOT release the parking brakes on an incline.
DO NOT release the parking brakes without the wheels
being chocked.
1.
PARKING BRAKE RELEASE PLUNGER -Located
on the brake manifold in the hydraulic/electric
cabinet, when this red plunger on the brake valve is
depressed, the brake valve opens allowing
accumulator pressure to immediately disengage the
parking brakes.
Step 1. Disconnect the batteries by separating the 350
Amp Battery Connectors.
Step 2. Firmly depress the red plunger knob on the
brake manifold. The brakes are now released.
Figure 2-6A. Parking Brake Release Plunger
(SJKB-33N)
1.
PARKING BRAKE RELEASE PLUNGER
NOTE:
On European models, the manual lowering valve
knobs are located inside the hydraulic/electric
cabinet on the turret.
Parking Brake Release Plunger
2. EMERGENCY LOWERING VALVE ON BOOM -
Located at the base on the boom cylinder, this valve
allows boom lowering in the event of an emergency or
an electrical system failure. Turning the valve knob
counterclockwise allows the boom to gradually lower.
Valve MUST be fully closed (clockwise) to restore normal
operation.
3. EMERGENCY LOWERING VALVE ON JIB -
Located at the base on the jib cylinder, this valve allows
jib lowering in the event of an emergency or an electrical
system failure. Turning the valve knob counterclockwise
allows the jib to gradually lower. Valve MUST be fully
closed (clockwise) to restore normal operation.
1
The brake will automatically return to normal
operation when any hydraulic function is selected.
MA33N208
Figure 2-6B. Parking Brake Release Plunger
(SJKB-33i, 33C, 40i, 40C)
1
Mawb209
NOTE
