SkyTrak 6036 Service Manual - Manual (Page 227)

Section 9 Hydraulic System
Model 6036/6036T S/N 9B0500 thru 14833 9-77
5. To remove the compensator spool (22),
unscrew plug (23) and remove and discard O-
ring (24). Remove compensator spring parts
(25) and discard. Remove retaining ring (26)
and carefully lift compensator spool (22) out of
the cavity.
Cleaning and Drying
Clean all metal parts in an approved cleaning
solvent such as trichlorethylene and blow dry.
Immerse metal parts in hydraulic oil if they are to
be exposed to air for more than 4 hours.
Inspection
1. Visually inspect the pulsar solenoid wires and
connectors for damage. Check for loose,
exposed or crimped wires. Replace damaged
pulsar solenoids.
2. Inspect the spools and working section for
nicks and burrs. Remove minor damage to
the spool surface using a hard Arkansas
stone. If severe damage to the spool and/or
bore is noted, replace the working section and
spool as an assembly.
3. Inspect compensator spring for damage.
Replace faulty spring with compensator spring
kit.
4. Inspect all threaded surfaces for stripping or
other damage. Replace parts as necessary.
e. Assembly of a Working Section
NOTE: Refer to Parts Manual for the necessary
kits required to reassemble the working section.
1. Coat the compensator spool (22, Fig. 9.46)
with a thin coat of clean hydraulic oil and
carefully slide the spool into the cavity. Install
retaining ring (26).
2. Install compensator spring kit (25) in accor-
dance with the instructions packaged in the
parts kit. Replace O-ring (24) on plug (23) and
install plug into working section (28). Torque
plug to 80 to 85 lb-ft (109 to 116 Nm).
3. To install override linkage, if removed, as-
semble clevis (20) on working section and
install dowel pin (21) and shaft (18) with new
O-rings (19). Install spring pin (17) and plug
(16). Install adapter (15) and secure with
setscrew (12). Assemble nut (14), handle (6)
and knob (13).
4. Install a new O-ring (11) on plug (10) and
assemble plug to valve. Install retaining ring
(4).
NOTE: Exercise extreme caution when installing
the spool into the bore as damage to the spool
and/or bore could occur.
5. Coat the spool (9) with a thin layer of clean
hydraulic oil. Thread the manual override
handle (6) or a 3/8-16 bolt approximately 2
inches long, into the valve section.
6. Rotate the handle or bolt fully downward away
from the valve. Carefully slide the spool
straight into the bore with the spool linkage
groove facing upward. Slide the spool in until
it contacts the override linkage, then rotate the
handle or bolt upward to pull the spool the rest
of the way into the bore. Rotate the handle
slightly back and forth to check for proper
installation.
7. Assemble a new O-ring (8) on plug (7) and
push plug into valve bore. Install the retaining
ring (5) and check that it has seated com-
pletely.
8. Use the manual override handle or bolt to fully
shift the spool in both directions. Spool
movement should be free of binding and
capable of returning with spring force only.
Check that end plugs (7 & 10) are securely
seated.
NOTE: Each pulsar solenoid comes paired with
its own orifice disk. In addition, the pulsar sole-
noid with disks and O-rings are packaged in pairs
as a cartridge kit. If replacement is necessary,
use the complete cartridge for a working section.
DO NOT mix components.
9. Insert the new orifice disk (3) and push down
flush to the bottom of the cavity.
10. Install the new O-ring (2) and check for proper
seating.
11. Install the new pulsar solenoid (1) and torque
to 6.5 lb-ft (8,8 Nm).
Repair of the Outlet Section
The outlet section is made up of an end cover
body (4, Fig. 9.44), two small plugs (9) and one
large plug (10). If damage to the body or any of
the plugs is noted, replace as necessary.