5 Maintenance
Take care not to damage shaft surfaces, in particular where bearings and lipseals will be located
Ensure all fastenings are tightened to the torque settings as shown in Technical Data (See chapter 6 Technical data)
S
Stteepp 22
Fitting bearings to shaft
1. Fix the shaft vertically in a vice fitted with soft jaws- taking care not to damage the shaft.
2. Heat needle bearing inner race up to 110°C (230°F) and shrink fit it onto its seat.
3. Mount needle bearing inner snap ring.
4. Fit gear key.
5. Apply an anti-seize compound to the bearing seat.
6. Slide gear over bearing seat until it sits against the shoulder.
7. Place bearing retainer loosely over shaft and gear.
3205-0026
3205-0027
8. Heat the 3 angular contact ball bearings up to 110°C (230°F) and slide over the shaft.
N
Noottee:: The bearing positioning is dependent on the suction and discharge direction. Two bearings face one direction and
the third bearing faces the opposite direction.
C
CA
AU
UTTIIO
ON
N
A
A
3205-0028
*
**
( )
( )
A
A
3205-0029
*
**
( )
( )
Flow direction.
Inlet at the front
Outlet on the top or bottom
Flow direction.
Inlet on the top or bottom
Outlet at the front
(*) Front
(**) Rear
(*) Front
(**) Rear
9. Place the tab washer in its position, make sure the inner tab is aligned in the shaft groove.
10. Apply an anti-seize compound to bearing nut and shaft thread.
11. Fit and tighten the bearing nut with a ´C‘ spanner by tapping sharply until one tab of the lock washer lines up with the bearing
nut groove and fold the tab into the groove.
31
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