
132 SEBU7494-06
Maintenance Section
Sprocket Bearings - Lubricate
Table 2 2
247, 257, 267, 2
77, and 287
Component Minimum Thickness
Sprocket Rings 4.75 mm (0.19 inch)
i01
992415
Sprocket Bearings - Lubricate
SMCS Code: 4164-086-BD; 7551-086-JK
NOTICE
The service interval for the lubrication of the sprock-
et bearings should be reduced to every 500 service
hours if the machine is operated in wet and muddy
conditions.
g01025225
Illustration 163
typica l examp le
1. Use a mallet in order to pound the housing plug
inward until the plug falls out of the housing. If the
plug was damaged during removal, replace the
plug.
2. Wipe the old grease out of the housing.
3. Pull out the bearing seal. Replace the seal if the
seal is damaged.
4. Pack the bearing with clean grease and push
the seal into position. Place clean grease on the
outside of the seal in order to protect the seal.
5. If the old housing plug is reinstalled, reverse the
housing plug and pound the plug into the housing.
i02125302
Sprocket Retainin g Nuts -
Check
SMCS Code: 4164-535-NT
g00953040
Illustration 164
Check the torque on the nuts for new sprockets or for
sprockets that have been r einstalled after every ten
service hours until the specified torque is maintained.
Check the nuts on both sprockets. Use a star pattern
when you tighten the nuts.
Tighten the nuts for the 247 and 257 to the following
torque 175 ± 30 N·m (129 ± 22 lb ft).
Tighten the nuts for the 267, 277 and 287 to the
followingtorque270±40N·m(199±30lbft).
i01878236
Tilt Cylinder Bearings and
Bucket L inkag e Bearings -
Lubricate
SMCS Code: 5104-086-BD; 6107-086-BD
Wipe all of the grease fittings before you apply
lubricant.