6-20
Published 01-14-2021 Control # 707-01
SWING SYSTEM
TMS9000-2 SERVICE MANUAL
SWING LOCK PIN
Description
T h e p u r p o s e o f t h e s w i n g l o c k p i n i s t o l o c k t h e
superstructure in position directly over the front or the rear of
the carrier. The swing lock pin installation consists of a large
pin, a control handle in the right side of the cab, and a control
cable and control linkage that allows the crane operator to
set and free the pin.
When the superstructure is directly over the front or rear,
pushing the control handle in inserts the swing lock pin into a
socket on the carrier frame, locking the superstructure in
place. Pulling the control handle out pulls the pin out of the
socket, unlocking the superstructure.
Rotating the Turntable Swing Lock Handle
By rotating the handle (Clockwise/Counter Clockwise), you
can lock the handle to prevent movement of the handle.
Maintenance
Verify cable is routed to avoid damage from superstructure
rotation and is undamaged. Verify pin, the turntable bushing
the pin passes through, and the sockets on the frame are
undamaged. Verify all attaching hardware is secure and
undamaged.
Ensure linkage and cable are adjusted properly. If they are,
the pin bottom will stick out about 4.00 inches (10.16 cm)
from the bottom of its bushing in the turntable. (If it is too far
in, it might not lock properly. If it is too far out, it might hang
up). Using the jam nuts on the linkage parts and cable, adjust
the linkage and cable so the pin bottom will be flush with the
bottom of its bushing in the turntable when not applied, and
the pin will stick out about 4.00 inches (10.16 cm) from the
bottom of its bushing in the turntable when applied. Verify the
superstructure can lock properly when the pin is applied and
the superstructure can rotate without pin hangup when the
pin is not applied.
360° SWING LOCK CONTROL (POSITIVE
LOCK TYPE)
Description
The purpose of the swing lock is to secure the superstructure
in position at one of the positions in its rotation. There are
roughly 247 spots about 1.45 degrees apart for the
superstructure to lock to in its 360 degree of rotation. The
360 degree swing lock control pedal is on the left side of cab.
Pushing the swing lock foot pedal engages the lock between
the teeth of the swing gear. Pulling the swing lock control
lever up disengages the lock.
Maintenance
Verify cable is routed to avoid damage from superstructure
rotation and is undamaged. Verify swing lock assembly is
undamaged and working properly. Verify springs are
undamaged and have enough strength to pull blade of swing
lock assembly completely out of the gear teeth when the
control pedal is up. Verify the linkage can put the blade of the
swing lock assembly as far as possible between the gear
teeth when the control pedal is down.
Verify all attaching hardware is secure and undamaged.
Make adjustments as needed.
If the swing lock assembly is damaged, install a replacement.
Align the blade of the swing lock assembly so it will fall
between gear teeth. Use the shim and the related attaching
hardware (two M8x16 screws and M8 lockwashers) to
ensure the swing lock assembly cannot move side to side,
and can lock up the superstructure. Torque the four M24x100
mounting bolts according to the specifications in
As needed, adjust the swing lock control and cable per
above instructions. Then operate the control lever several
times to verify the swing lock blade assembly engages and
disengages properly. Adjust cable as required.
Fo
r
Reference
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