16
FORM NO. L-20063-AG-1216
MANUAL RELEASE PROCEDURE
S for SPrinG actuatorS
t
wo
-p
ort
a
ctuator
o
nly
CAUTION
This product is spring loaded under
extreme pressure. Do not disassemble.
actuator. If actuator malfunctions, replace
actuator or contact Nexen.
CAUTION
Do not completely unscrew the bolt from
the unit or the manual release mechanism
will be disabled.
o
BSolete
t
hree
-p
ort
a
ctuator
o
nly
CAUTION
This product has possible pinch points.
Care should be taken when interacting
with this product.
Figure 17a
Obsolete Three-Port Actuator
SPRING BRAKE
SERVICE
SERVICE
Apply Hold-Off
Air Pressure
9/16"
Hex Head
CAUTION
This product is spring loaded under
extreme pressure. Do not disassemble.
actuator. If actuator malfunctions, replace
actuator or contact Nexen.
CAUTION
Do not completely unscrew the bolt from
the unit or the manual release mechanism
will be disabled.
CAUTION
This product has possible pinch points.
Care should be taken when interacting
with this product.
Figure 17b
Two-Port Actuator
Spring Brake
Service
3/4" Hex
Head
(Located Under
Breather Cap)
D
iSenGaGement
The tap bolt under the breather cap is used to
mechanically release the spring in the event of an
actuator failure or machine service when hold-off air
pressure is not available.
DO NOT USE THE TAP BOLT TO ADJUST THE
FRICTION FACING GAP.
Use a 9/16 inch socket wrench to turn the tap
bolt counterclockwise until the brake is released.
(Approximately 40 turns or 0.83”)
For easier turning of the tap bolt apply 80-100 psi
hold-off air pressure to remove the tension.
After loosening the tap bolt exhaust the air from the
spring chamber.
DO NOT USE AN IMPACT WRENCH.
r
e
-
enGaGement
Apply 90-100 psi air pressure and using a 9/16 socket
wrench, turn the tap bolt clockwise and tighten to
50-60 ft.-lbs.
Do not exceed 74 ft.-lbs.
Remove hold-off pressure.
D
iSenGaGement
The hex bolt on the top of the canister is used to
mechanically release the spring in the event of an
actuator failure or machine service when hold-off air
pressure is not available.
DO NOT USE THE HEX BOLT TO ADJUST THE
FRICTION FACING GAP.
Use a 3/4 inch socket wrench to turn the hex
bolt counterclockwise until the brake is released.
(Approximately 40 turns or 0.83”)
For easier turning of the tap bolt apply 80-100 psi
hold-off air pressure to remove the tension.
After loosening the hex bolt exhaust the air from the
spring chamber.
DO NOT USE AN IMPACT WRENCH.
r
e
-
enGaGement
Apply 80-100 psi air pressure and using a 15/16 socket
wrench turn the hex bolt clockwise until the bolt head is
flush against the actuator and tighten to 50-60 ft.-lbs.
Do not exceed 74 ft.-lbs.
Remove hold-off pressure.