General repair instructions
BOMAG
17
008 921 86
1.3
Ball and roller bearings
!
Caution
Ball and roller bearings may only be reused if they
are free of damage and do not show any signs of
wear.
Fig. 5
l
If a ball or roller bearing of a bearing pair shows de-
fects, both ball or roller bearings need to be re-
placed.
l
Remove any lubricant residues from the ball or roll-
er bearing to be examined by washing it with gaso-
line or any other appropriate degreasing agent.
Ensure strict cleanliness.
l
Check balls or rollers, running surfaces, outer faces
of outer races and inner faces of inner races for vis-
ible damage. Replace the ball or roller bearing if
necessary.
l
Check the ball or roller bearing for clearance and re-
sistance between the inner and outer races, replace
if necessary.
l
Lubricate the ball or roller bearing with the recom-
mended type of grease before assembly or reas-
sembly.
l
On greased bearings (e.g. wheel bearings) fill the
space between ball or roller bearing and outer seal
with the recommended type of grease before as-
sembling the seal.
l
Check shaft and bearing housing for discolouration
or other signs of movement between ball or roller
bearing and seats.
l
Make sure that shaft and housing are free of burrs
before assembling the ball or roller bearing.
l
Always mark the individual parts of separable ball or
roller bearings (e.g. taper roller bearings) to enable
correct reassembling. Never assemble the rollers to
an outer race that has already been used, replace
the complete ball or roller bearing instead.
Fig. 6
!
Caution
When assembling the ball or roller bearing to the
shaft load must only be applied to the inner race 1
(Fig. 6).
When fitting the bearing into the housing load
must only be applied to the outer race (2).
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