Yanmar 1GM User Manual page 25

18
REMOVING BROKEN SCREWS AND BOLTS
CHAPTER ONE
1. Center pu nch broken stud
3. Tap In screw extractor
BEA RING REPLACEMENT
Bearings (Fi gu r e 49) are used thro ughou t the engine to
reduce power loss, heat and no ise resulting from friction .
Because bearings are precision-made parts, they mus t be
maintained by proper lubrication and maintenance.
If a
bear ing is damaged, it shoul d be replaced immediately.
However, if installing a new bearing, care should be taken
to prevent damage to the new bearing. Wh ile bearing re-
placement is described in the individual chapters where
applicable, the following should be used as a guideline.
!
2. Drill hol e In stud
4. Remove broken stud
NOTE
Unless otherwise specified, install bearings
with the manufacturer
s
mark or number
facing outward.
Bearing Removal
While bearings are norma lly rem oved only when dam-
aged, the re may be times when it is necessary to remove a
bearing that is in good cond ition . Imp roper bearing re-
moval will damage the bearing and possibly the shaft or
case half. Note the following when removing bearings.