CYLINDERS
Cylinders
358
M8.0-1055-012
01 Rev. 6/08
Tilt Cylinder Disassembly
(Refer to Figure 15301)
Before proceeding with disassembly, thoroughly clean
the outside of the cylinder to remove all grease and dirt
build-up.
1. Place the cylinder in a vise. Care should be taken
to avoid over-tightening, as the tube assembly (1)
may be easily damaged. The use of an adjustable
spanner wrench, similar to the one shown in Figure
15966, is required for disassembly. A face spanner
wrench with 4.75 mm (0.187 in) pins and a spread
of at least 66.7 mm (2.625 in) is sufficient.
2. Using a scraper or similar tool, remove any mate-
rial, burrs, etc. from the edge of the cylinder. If
burrs, etc. are not removed, piston removal may be
difficult.
3. Using spanner wrench, remove the rod guide (2),
o-ring (6), back-up ring (7), packing rod (8) and
wiper ring (9).
4. Next, carefully remove the roll pin (19), nut (10),
piston seal (11), piston (4), back-up rings (18), o-
ring (17) and spacer (20) out of the end of the tube
assembly.
5. Inspect the tube assembly for any signs of scoring.
If scoring is evident, the tube assembly must be
replaced. The tube assembly should be honed to
remove any remaining burrs.
Rod Disassembly
1. Remove cotter pin and then use wrench flats on
rod to remove castle nut.
2. Slide all components off the end of the rod.
3. Inspect the rod for scoring or damaged material. If
damages or scoring is evident, the rod must be re-
placed.
Tilt Cylinder Repair
Never use a screwdriver to remove seals, as irrepara-
ble damage and leakage may occur.
1. With the use of a small hooked tool, carefully pull
the seals from their mounting grooves.
2. After all the seals have been removed, inspect the
contact surface of the piston for scoring. If slight
scoring is evident, sand with a fine emery paper
until all high surfaces have been removed. Heavily
scored components must be replaced.
When cleaning the piston, be sure to clean seal seating
areas. Protect eyes and face when using compressed
air.
3. When all parts have been disassembled and in-
spected, wash all cylinder components in a good
grade solvent and dry with air pressure.
4. After all parts have been thoroughly cleaned, place
in a dirt free area until ready for reassembly.
Tilt Cylinder and Rod Reassembly
1. Apply a coating of hydraulic oil (Crown No.
063001-001) to all seals before they are assem-
bled.
2. Install all seals by hand.
3. After the seals have been installed, install piston
and fasten hex jam nut; be sure piston is seated
properly against the rod shoulder.
Care should be taken when inserting the rod guide to
prevent sharp edges from damaging the new seals and
packings.
4. After installing the rod assembly into the tube as-
sembly, carefully assemble the rod guide into the
tube.
Figure 15966
Crown 2007 PF15682-12 Rev. 6/08
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