Doosan 50001, Руководство по ремонту

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SP000016 General Maintenance Procedures
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avoid cutting or scratching. Curling under of any seal lip
will seriously impair its efficiency. Apply a thin coat of
loctite #120 to outer diameter, of metal casing, on oil seals
to assure an oil tight fit into retainer. Use extreme care not
to get loctite on lips of oil seals. If this happens, that
portion of the seal will become brittle and allow leakage.
When replacing lip type seals, make sure spring loaded
side is towards oil to be sealed.
5. If available, use magna-flux or similar process for
checking for cracks that are not visible. Examine teeth on
all gears carefully for wear, pitting, chipping, nicks, cracks
or scores. Replace all gears showing cracks or spots
where case-hardening has worn through. Small nicks may
be removed with suitable hone. Inspect shafts and quills
to make certain they have not been sprung, bent, or
splines twisted, and that shafts are true.
NOTE: Spline wear is not considered detrimental
except where it affects tightness of splined
parts.
Inspect thrust washers for distortion, scores, burs, and
wear. Replace thrust washer if defective or worn.
6. Inspect bores and bearing surfaces of cast parts and
machined surfaces for scratches, wear, grooves and dirt.
Remove any scratches and burrs with crocus cloth.
Remove foreign material. Replace any parts that are
deeply grooved or scratched which would affect their
operation.
Bearing Inspection
The condition of the bearings are vital to the smooth and
efficient operation of the machinery. When any component
containing bearings is disassembled, always carefully examine
the condition of the bearings and all of its components for wear
and damage.
Once the bearing is removed, clean all parts thoroughly using a
suitable cleaning solution. If the bearing is excessively dirty
soak the bearing assembly in a light solution and move the
bearing around until all lubricants and or foreign materials are
dissolved and the parts are thoroughly clean.
When drying bearings, moisture free compressed air can be
used. Be careful not to direct the air in a direction which will
force the bearing to dry spin while not being properly
lubricated.
After the bearings have been cleaned and dried, carefully
inspect all bearing rollers, cages and cups for wear, chipping
or nicks. If the bearing cannot be removed and is to be
inspected in place, check for roughness of rotation, scoring,
pitting, cracked or chipped races. If any of these defects are
found replace the whole bearing assembly. NEVER replace the