SECTION 2 - SERVICE PROCEDURES
31215808
2-19
Cylinder Assembly
1. Rinse the inside of the tube with hydraulic fluid and allow
to drain. A high-pressure rinse followed by a wipe with a
lint-free rag is preferable. Clean all internal components
of any foreign material.
2. Lubricate the head and all seals with hydraulic fluid prior
to installation. Install the seal, wiper, o-ring, back-up ring,
and retraining ring to the cylinder head.
3. Lubricate the piston and all components with hydraulic
fluid. Install the seal and wear ring to the piston.
NOTE:
Re-check that seals are not twisted or pinched and are
properly seated.
4. Place the rod on a clean table. Install the static o-ring seal
into the groove on the piston end of the rod.
5. Install the head followed by the piston onto the rod not-
ing the proper orientation of each component. Torque
the piston nut to 175-200 ft. lbs.
6. When the rod assembly is ready to be installed into the
tube, liberally apply an anti-seize lubricant to the head
outer surface, especially the static seal.
7. Next dip the entire rod assembly into hydraulic fluid and
stuff this assembly into the tube. Watch the seals as they
pass over the rod port (if visible) to be sure they are not
nicked or cut.
8. Install the head until the retaining ring seats in it’s
groove.
Installation
1. Remove the plastic plugs from the cylinder.
2. Pull rod out of cylinder approximately 3 ft.
NOTE:
The following step is easier done with two people, one to
slide the cylinder into the mast, the other to guide the rod
into the cylinder block at the top of the mast.
3. Slide the cylinder into the mast and install the rod into
the cylinder attach block.
4. Apply Low Strength Threadlocking Compound (purple)
to the setscrew securing the lift cylinder rod to the
sheave wheel anchor block at the top of mast section-2.
5. Install the setscrew in the cylinder attach block at the top
of the mast, coat the threads of the setscrew with
Threadlocking Compound
(RC/#640-blue)
before tighten-
ing.
6. Install the cylinder mounting plates at the bottom of the
mast section-1. Mount plates two each side, using (2) two
long pass through bolts and nuts, apply Medium
Strength Threadlocking Compound to the bolt threads
before tightening nuts.
7. Install the mounting pin through the side mounting
brackets and the cylinder valve body and through the
mounting brackets on the other side of the mast. Install
the snap rings to each end of the mounting pin.
8. Connect the hydraulic fittings and lines,
(new fittings
should be used)
.
9. Slide the mast together
(stowed position)
from the top of
the mast.
10. Stand machine upright on it’s base wheels.
11. Connect the hydraulic line fittings at the pump.
12. Check oil level in the hydraulic oil reservoir, add oil to fill
line, if necessary.
13. Install the ground station
(pump)
cover.
14. Set-up machine for operation and cycle mast
(up and
down)
approximately 3 ft. to 4 ft. a few times.
15. Check the hydraulic oil reservoir again, add oil to the fill
line.
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