SHOP MANUAL MT26/31 - 12.2004SHOP MANUAL MT26/31 - 12.2004
GENERAL
CH 0 PAGE 20 CH 0 PAGE 21
GENERAL
SHOP MANUAL MT26/31 - 12.2004SHOP MANUAL MT26/31 - 12.2004
GENERAL
CH 0 PAGE 20 CH 0 PAGE 21
GENERAL
Replace a seal, if rust exists on the circumference of its
contact surface.
Apply a thin coat of oil to the contact surfaces when installing
a seal.
Insert the o-ring in the housing groove taking care not to
twist the o-ring. An o-ring installed with a twisting condition
will jump out of the groove when the seal is turned round
under pressure.
Keep the bearings and their surroundings clean. Every dust
and dirt particle, even though they are invisibly small can
affect bearings. Always take sufficient care to protect bear-
ings against dust and dirt.
Handle bearings with the utmost care. Because of the high
precision structure and the increased hardness which is pro-
vided by heat-treatment to improve wear resistance, bear-
ings require special care to handle them.
Shock due to careless handling of bearings will cause dents
to form on the inner and outer races or break the bearings.
Avoid excessive heating. The hardness of bearings will be
lowered at temperatures higher than 120°C, this may cause
considerably reduced life of the bearings.
Use the proper jigs for handling the bearings. Under no cir-
cumstances should any other jig be used as a substitute for
the proper one.
Take necessary rust-preventive means.
Keep the work where bearings are to be handled clean. Also,
do not unpack a bearing package
until just before the installation of the bearing.
Be carefull not to drive an outer race onto an inner race by
tapping the outer race, and vice versa. Such unreasonable
handling will cause dents to form on the sliding surfaces
between the races, and the bearing will be damaged early in
its life.
Be careful not to force a bearing for removal. The use of a
proper removing jig shown below is recommended.
To wash bearings, neutral and anhydride solvents such as
light oil and kerosene may be used. Two vessels filled with
washing oil should be provided; one for washing dirty bear-
ings and the other for rinsing. Rapidly shake a soiled bearing
in the washing oil to remove dirt. Rotating bearing
races, instead of shaking the bearing in the washing oil,
should be avoided because bearing races may be damaged
by foreign particles such between the races. It is also neces-
sary to keep washing oil clean by filtering it from time to time.
0.2.22 Handling of O-ring Seals
0.2.23 Handling of Bearings
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