
41
Hy
Hy
Hy
Hy
Hydraulic C
draulic C
draulic C
draulic C
draulic Cylinder
ylinder
ylinder
ylinder
ylinders
s
s
s
s
Caution: Never allow anyone underneath the
moving portion of the Safe-Stop 180 TMA.
Block out all loads and disconnect electrical
contacts prior to performing any service on
hydraulic equipment.
1. TROUBLESHOOTING
If you suspect problems with the hydraulic cylinders on
the TMA, you may need to remove the cylinders from the
TMA for repair or replacement. The cylinders can only
be removed when the TMA is completely folded. Double
check that all electrical contacts between the TMA and
support vehicle have been disconnected prior to perform-
ing any work on the hydraulic system.
A cracked, bent, or leaky cylinder may need repair, but
should almost always be replaced to ensure proper, reli-
able performance.
2. CYLINDER REPLACEMENT
A. Completely fold the TMA.
B. Unplug all electrical connections between the
TMA and the support vehicle.
C. See TMA drawing 3526084-0000. Loosen (but
do not disconnect) the "Follower Link Pivot" and
the "Push Link Pivot" where they are bolted to
the "Weldment, Front Intermediate Frame" and
the "Weldment, Rear Intermediate Frame", re-
spectively.
D. At the top end of the cylinder rod, loosen the set
screw and push out the short 7/8" diameter pin,
making note of the alignment and location of all
linkage components for later reassembly.
E. Disconnect the hoses leading into the cylinder at
two convenient locations, and place temporary
caps on the hoses or cylinder ports to prevent
spillage or contamination.
F.
At the bottom end of the cylinder body, remove
the set screw from the frame and push out the
long 7/8" diameter pin, making note of the align-
ment and location of all components for later
reassembly.
G. The cylinder should now be free. Reinstall a new
cylinder in the reverse order of these removal
steps, making sure to properly align and (where
necessary) tighten all components. Use blue
thread locker (medium strength) on all fasteners.
Note: See the section on Hydraulic System Prim-
ing. You will likely need to prime the system if you
are installing a new or "dry" cylinder.
3. REPAIRING CYLINDERS
In most cases, replacing a damaged or faulty cylinder
with a new cylinder is the best option. Refer all cylinder
repairs to a qualified hydraulic cylinder shop. Otherwise,
contact Energy Absorption Systems' Customer Service
Department for replacement components.
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