BOOM TMS700E SERVICE MANUAL
4-22 Published 01-29-2015, Control # 512-01
Removal
1. Extend and set the outriggers and level the crane.
2. Elevate the boom slightly so that the lift cylinder is
extended approximately 0.3 m (1 ft).
3. Ensure the boom is fully supported by placing blocking
or cribbing under the boom. Rest the boom on the
blocking or cribbing.
4. Remove the bolts, washers, and stop plate securing the
lift cylinder’s upper pivot shaft to the boom.
5. Remove the bolt, lockwasher, and nut to free the pin
from the lift cylinder’s lower pivot shaft. Remove pin.
6. Attach an adequate lifting/supporting device to the lift
cylinder.
7. Remove the upper pivot shaft. Activate the hydraulic
system and retract the lift cylinder enough to clear the
boom’s lift cylinder lugs. Save the thrust washers
removed.
8. Tag and disconnect all the hydraulic lines to the cylinder.
Cap or plug all openings with high pressure fittings.
9. Remove the lower lift cylinder pivot shaft from the lift
cylinder and its lugs on the turntable. Remove the
cylinder. Save the thrust washers removed.
10. Move the lift cylinder to a clean work area.
Disassembly and Assembly
Disassembly and assembly procedures of the lift cylinder
holding valve, and control valve are provided in Hydraulic
System, page 2-1 under Cylinders and Valves respectively.
Installation
1. Attach an adequate lifting device to the lift cylinder and
place the cylinder barrel end between the lift cylinder
attach lugs on the turntable.
2. Align the cylinder’s barrel end hole with the attaching
lugs on the turntable.
3. Install the lower lift cylinder pivot shaft, with one or more
thrust washers on each side as required between the
turntable attach lugs and the cylinder.
4. Apply medium strength thread locking compound (Spec.
6829012418, Loctite® 243) to the bolt and nut used to
secure the pin. Secure the lift cylinder lower pivot shaft
to the cylinder with the pin. Secure the pin with the bolt,
lockwasher, and nut.
5. Connect the extend and retract hoses to the lift cylinder.
6. Activate the crane’s hydraulic system and align the lift
cylinder rod end with the attaching lugs on the boom.
Install the lift cylinder upper pivot shaft, with one or more
thrust washers as required between the cylinder and the
boom attach lug(s). Shut down the engine.
7. Apply medium strength thread locking compound (Spec.
6829012418, Loctite® 243) to the bolts used to secure
the stop plate. Secure the upper pivot shaft to the boom
with the stop plate, two bolts and two washers.
8. Remove the lifting and supporting devices from the
boom and lift cylinders. Activate the hydraulic system
and check the lift cylinder for proper operation and any
leaks. Repair any leaks.
9. Lubricate the pivot shafts using their grease fitting(s).
DANGER
Ensure any blocking or cribbing used is capable of
supporting the boom.
DANGER
Ensure the lifting/supporting device is capable of
supporting the lift cylinder.
Reference Only
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