Reach Cylinders
4500 SRM 971
2.
Install labels on the hydraulic lines for correct
connection during installation. Disconnect the
hydraulic lines at the reach cylinders. Install
caps on the hydraulic lines and cylinder ports to
prevent dirt from entering the system. Check the
hydraulic fittings for damage. Replace as neces-
sary.
3.
Remove shoulder bolts and pins from each end of
the cylinder.
4.
Remove cylinders.
NOTE:
If disassembly of a reach cylinder is neces-
sary, loosen the retainer in the cylinder shell while
the cylinder is installed in the reach assembly. It
is possible that reach adjustments will not be nec-
essary. If disassembly is NOT necessary and the rod
ends will NOT be replaced, mark the reach cylinders
for installation in the same position.
5.
Mark each rod end of the reach cylinders for cor-
rect installation. The RH and LH reach cylinders
are not interchangeable.
6.
Have a helper hold the reach cylinder to keep it
from falling. Use a drift to remove the pins that
fasten each end of cylinder to the frame. Remove
the other reach cylinder using the same proce-
dure.
7.
Remove the bushings from each mount of the in-
ner frame and each scissor arm.
DISASSEMBLE
For the following procedures, refer to Figure 16.
NOTE:
In most instances, it is more cost effective to
simply replace the reach cylinders with a whole new
unit than to repair them.
NOTE:
Take care not to scratch the cylinder rod dur-
ing the repair process.
1.
Loosen the capscrew at the rod end. Hold the rod
to keep it from turning and remove the rod end
from the cylinder rod.
2.
Carefully remove the retainer and rod assembly
from the cylinder shell.
3.
Carefully remove the parts of the rod assembly.
1.
LOCK NUT
2.
PISTON RINGS
3.
PISTON PACKING
4.
PISTON
5.
CYLINDER TUBE
6.
PISTON ROD
7.
O-RING
8.
BACKUP RING
9.
ROD SEAL
10. WIPER RING
11. PACKING GLAND
Figure 16. Reach Cylinder Parts
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