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4.4 Assembly 4. Maintenance
4.4.1 Fitting bearings to shafts
Take care not to damage shaft surfaces, in particular where the seals will be located.
Ensure all fasteings are tightened to torque settings as shown in Technical Data (chapter 5).
On models S1, 2 and 3 pumps, bearings do not require heating. For models S4, 5 and 6 pumps, heat the bearing inner cones to
110°C
(230°F)
.
Do not use any form of live flame when heating, as this will damage bearings.
Step 1
Position shaft (24 and 25) vertically in a vice using soft jaws and apply anti-seize compound to the bearing diameters.
Step 2
Place the inner cone on the shaft ensuring a positive fit against
the shaft shoulder.
Step 3
Locate outer cup, bearing spacer (32) and rear bearing cup.
Step 4
Allow bearings to cool (models S4, 5 and 6 pumps only). Failure to do so will result in incorrectly set bearings.
1. Apply Permabond Grade 145 or equivalent locking compound to the bearing nut thread.
2. Tighten the bearing nut (30), whilst at the same time rotating the bearings (26 and 31) and spacer (32). The bearings are
correctly adjusted when the spacer can only be moved with a light tap of a mallet.
3. Repeat the above for double bearing assemblies.
4. Apply oil to the bearings.
