(2) Remove minor nicks with a fine stone or
Apply a film of hydraulic fluid to rubber "O" rings to
crocus cloth that has been dipped in dry-cleaning
facilitate their installation in the grooves of hydraulic
solvent or mineral spirits paint thinner. Replace gears if
pressure piston, plungers, and spools. When ,handing
teeth exhibit any other type of damage.
and installing "0" rings, exercise care to avoid cutting or
h. Inspection and Repair d Shafts and Splined
nicking them. A cut or nicked "O" ring may result in a
leak and subsequent equipment failure.
Part.
e. Inspection of Gaskets. Inspect gaskets for
(1) Inspect shafts for cracks, fractures, scores,
and deformation. Remove minor nicks with a fine tone
Tag damaged
o crocus cloth dipped in dry cleaner solvent mineral
gaskets for replacement.
spirits paint thinner.
(2) Replace shafts if they are cracked
Material.
fractured, and or deformed.
(3) Inspect splines for cracks, fractures, and
deformation. Remove minor nicks with a fine tone or
Check for evidence f separation between parts joined
crocus cloth in the same manner a for shafts in (1)
with synthetic rubber adhesive.
above.
(2) Replacement.
Tag damaged parts for
(4) Replace any splined item if splines do not
replacement. Replace parts bonded with synthetic
permit a secure fit.
rubber adhesive 8040664318 as follows.
i. Inspection and Repair of Threaded Parts.
(a) Remove
damaged
cushioning
(1)I Inspect all screws bolts, nuts, threaded
material (also cemented seal or gaskets) for associated
holes, and all parts with internal and / or external.
component.
(2) Repair damage to continuous-type by
(b) If necessary, roughen metal surfaces.
chasing with a suitable size tap or die.
Remove any paint from surfaces to be bonded.
j. Inspection of Snap Ring.
Warning: Work area should be well ventilated to
(1) Inspect snap ring for damage that would
reduce toxic concentration of solvent fumes.
impair their use.
(c) Remove oil, grease, moisture, or
(2) Replace snap rings if damaged.
k. Dowel Pin Removal If necessary, remove dowel
soaked in solvent aromatic petroleum naphtha, 50
pins by one d the following methods
percent grade B. Handle clean parts in a manner to
(1) Grip pin with self-locking pliers and pull
insure cleanliness and keep parts free d fingerprints.
with a twisting motion.
Warning: Avoid smoking in the work area.
(2) Grind pin off flush with surfaces, and drill
Adhesive is highly flammable .
out remainder d pin with suitable size drill.
l. Stud Removal If necessary, remove studs by
Note. Cementing should be accomplished at
one of the following method.
room temperature of at least 65o F. Do not use tape
(1) Apply penetrating oil to base of stud.
to hold parts together temporarily during bonding
Thread two hex nuts of proper size on the stud, then jam
process.
the nut. Tap head stud sharply several times with a
hammer. Apply suitable wrench to lower of the two hex
(d) Using a brush, or suitable applicator,
nuts and -now stud.
apply a thin coat of adhesive 8040-664-4318 to both of
(2) Apply penetrating oil to base of stud and
the surfaces to be bonded. Allow adhesive to set for
tap head d stud sharply several times with a hammer.
about 15 minutes before joining the parts, and from 30
Grip stud with self-locking pliers and unscrew.
minutes to 24 hours before placing the cemented parts
(3) Grind stud off flush with surface, and drill
use.
out reminder of stud with suitable size drill.
g. Inspection and Repair of Gem.
m. Inspection of Welds. Inspect all weldments
(1) Inspect gears for wear, nicks, flaking,
broken or defective welds.
scoring, and burring. Check that gears are secure on
n. Inspection and Repair of Finish.
the draft or component part on which they have been
shrunk or pressed.
4-7