plate glass or better. If the 600 grit paper is new it
n. In spool assembly, push the cross pin to loosen
should first be rubbed down with a scrap steel part to
remove grit which would produce scratches. The ends of
o. Push inside lower edge of spool so that spool
the star gear can be used for this purpose if necessary.
moves towards splined end and remove carefully from
Then both sides of the ring gear, both sides of the plate,
sleeve (see figures 9-26 and 9-27).
the 14 hole end of the housing and the flat side of the
p. Push centering spring set out of spring slot in
end cap should be cleaned lightly.
spool (see figures 9-28 and 9-29).
9-26. Stroke each surface across the abrasive several
times and observe the part (see figures 9-30, 9-31 and
9-32). Any small bright area near an edge indicates a
burr which must be removed. Hold the part so that
9-23. Each part should be rinsed carefully in clean
contact with the abrasive is as flat as possible (Do not
solvent, even such exterior parts as all capscrews and
push one edge down hard or the part will become
all seals that appear to be reusable. If in doubt, replace
rounded). Check each part after 6 to 10 strokes across
with new seals. It is good service policy to replace all
the abrasive. After polishing each part, rinse clean in
seals when unit is reassembled. They are available in kit
solvent and blow dry. Keep these parts absolutely clean
form. Rinsing and cleaning can be done while other
until they are assembled.
parts of the unit are being disassembled and parts can
be set to dry on clean paper towel. The meter gear set
9-27. REASSEMBLY OF STEERING CONTROL UNIT .
must be disassembled and cleaned similarly.
9-24. Inspect all moving surfaces to insure that they
CAUTION: Observe the shaft-to-rotor alignment
have not been scored or abraded by dirt particles or
procedures specified in figure 9-2. Do not oil
otherwise disrupted. Smooth burnished surfaces are
any component prior to reassembly. The
normal in many areas. Slightly scored parts can be
sealing of one component to another is
cleaned with 600 grit abrasive paper by hand rubbing
dependent on lapped surfaces. Seepage
may occur as a result of dust retained in an
oil film. Blow all parts dry with compressed
9-25. To prepare all surfaces of the meter section for
air prior to reassembly.
reassembly and insure that all edges of the parts are
burr free, place a piece of 600 grit abrasive paper face
a. Place housing in vise with control end up.
up on an extremely flat, clean, hard surface. The
surface to be used for this purpose should be as flat as