SPP Pumps Auto Prime Q Series - Workshop Manual - Manual (Page 16)

Manual No/Rev
W72-021E / 8
Workshop Manual for
AUTOPRIME Q Range Pump Units
Our policy is one of continuous improvement and we reserve the right to alter specifications at any time
Page 16 of 36
7.3.4 Pump Assembly Procedure
1. Apply a light smear of grease to the non-
drive end bearing assembly.
2. Locate the outer race of non-drive end,
roller bearing inside the bearing housing
and push it through the drive-end bearing
diameter.
3. Set it square with the bore and push it
home to seat fully against the shoulder at
the pump end of the bearing housing.
4. Insert the bearing spacer into the bearing
housing.
5. Heat the inner ring of the non-drive end,
roller bearing to 110°C and place over the
pump end of the shaft to locate fully against
the shoulder on the shaft.
6. Heat the drive-end ball bearings to 110°C
and place the first bearing over the shaft
ensuring that the thicker end of the inner
ring is facing the shoulder on the shaft.
Press the bearing home and ensure that
the bearing abuts the shoulder and is
seated squarely on the shaft.
7. Heat as above and place the second
bearing on the shaft but with the thinner
end of the inner ring facing the first bearing.
Press home to abut fully with the first
bearing.
8. When cool, apply grease to pack the
bearings to fill about half the space
between the balls, and rotate the bearings
several times to distribute the grease
evenly.
9. Place the bearing housing in the vertical
position and lower the shaft into the bearing
housing.
10. Press home the shaft until the drive-end
bearings are seated fully on the bearing
spacer.
11. Fit the locknut to the shaft and tighten to
200Nm.
12. Lubricate and fit the O ring in the groove
and fit the lip seal with its lip facing inwards
in the housing on the bearing cap.
13. Fit the bearing cap and secure with four M8
x 25 screws.
14. Invert the bearing housing, lubricate and
insert the stationery element of the
mechanical seal in it’s housing on the pump
end of the bearing housing.
15. Lubricate and fit the rotating assembly of
the mechanical seal on the shaft, add the
washer and circlip, compress the seal and
locate the circlip in it’s groove.
Take great care when handling the
mechanical seal parts, do not touch the
sealing faces and use only lint free wipers if
cleaning is required. If lubrication is
required to assist assembly us clean and
thin oil only.
16. Attach the pump casing to the bearing
housing by attaching the 8 M8 nuts to the
bearing housing studs.
17. Replace the back wear plate and secure
with 6 M12 nuts screwed onto the studs at
the bearing side of the pump casing.
18. Lubricate and insert the second stationery
element of the mechanical seal in it’s
housing on the pump end of the bearing
housing.
19. Lubricate and fit the rotating assembly of
the mechanical seal on the shaft, add the
washer and circlip, compress the seal and
locate the circlip in it’s groove.
20. Replace the taper key and place the
impeller over the shaft taper.
21. Ensure the shaft is locked and Insert the
socket screw into the impeller and the shaft.
Then unlock the shaft using the C spanner.
22. Insert the front wear plate complete with O-
rings into the pump casing and screw nuts
(M16) onto the studs on the front wear plate
of the pump casing.
23. Fit the mechanical seal lubrication tank and
connect the pipes as shown on the
diagram.
7.3.5 Seal Lubrication System Parts List
ITEM DESCRIPTION PART No. QTY
1 Washer M10 21172-211-342-5 2
2 Spring Washer -M10 21174-306-927-6 2
3 Cable Tie TY1003 2
4 Cable Base TY1029 2
5 Hose Tail 12149 1
6 Bolt M10 x 90 12204 1
7 Plastic Tube 12501 1
8 Bracket - Oil Bottle 14640.221 1
9 Spacer Set 14641 1
10 Oil Bottle 15430 1
11 Cap - Oil Bottle 15431 1
13 Hose Clip 7/8-1.1/2 25742-205-000-9 1
13a Hose Clip 05837 1
14 Bolt - M8 x 16 Self Locking 18163 4
15 Hose ¾” 16882 460mm
ATTENTION