Grundfos BME User manual

BME, BMET
Pulley head
Dismantling and assembly
GRUNDFOS INSTRUCTIONS

CONTENTS
2
Page
1. Service tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Dismantling of pulley head for BME. . . . . . . . . . . . 5
4. Assembly of pulley head for BME . . . . . . . . . . . . 13
5. Dismantling of pulley head for BMT. . . . . . . . . . . 23
6. Assembly of pulley head for BMT . . . . . . . . . . . . 30

3
1. Service tools
TM01 1676 5097
Puller complete
(SV 08 52)
TM01 1675 5097
Depth gauge
TM01 1677 5097
Ratchet spanner
(size 19 mm)
TM01 1678 5097
Keys for hexagon socket head
screws
(sizes 5 and 6 mm)
TM01 1679 5097
Belt tension tester
(96 10 56 45)
TM01 1680 5097
Hook spanners
(ID 34 07)
TM01 1681 5097
Holder for rotating shaft
(SV 10 17)
TM01 1682 5097
Tool for spline shaft
(SV 10 16)
TM01 1683 5097
Puller
(SV 03 27)
TM01 1684 5097
Fitting punch for axial bearing
(SV 00 21)
Fitting punch for seal ring
(SV 00 20)
TM01 1685 5097
Shaft height gauge
(SV 01 15)
TM01 1688 5097
Hammer
TM01 1689 5097
Knife
TM01 1690 5097
Punches for adjustment of turbine
wheel
(SV 08 54 and SV 08 55)
TM01 1692 5097
Victaulic coupling
Tool for adjustment of turbine wheel
(SV 10 10)
TM01 1693 5097
Dismantling bolts
(hexagon socket head M6 x 30)
TM01 1694 5097
Hexagon head screws
(M8 x 100 and M10 x 110)
TM01 1695 5097
Fitting tools for bearing
(SV 00 19)
TM01 1696 5097
Ring/open-end spanners
(sizes 8, 10, 13, 17 and 19 mm)

4
2. General
If your system is a BME, it has only one pulley head:
• BME pulley head.
For the dismantling of the BME pulley head, go to
page 5 Dismantling of pulley head for BME.
For the assembly of the BME pulley head, go to
page 13 Assembly of pulley head for BME.
If your system is a BMET, it has two pulley heads:
• BME pulley head and
• BMT pulley head.
For the dismantling of the BME pulley head, go to
page 5 Dismantling of pulley head for BME.
For the assembly of the BME pulley head, go to
page 13 Assembly of pulley head for BME.
For the dismantling of the BMT pulley head, go to
page 23 Dismantling of pulley head for BMT.
For the assembly of the BMT pulley head, go to
page 30 Assembly of pulley head for BMT.
BME BMET

Dismantling of pulley head for BME 5
3. Dismantling of pulley head for BME
Note: To prevent water from mixing with the oil
when the motor-driven pump is removed, proceed
as follows:
• Pull the pulley head with pump out of the sleeve.
• Loosen the pump from the pulley head.
• Proceed as shown in the following illustrations.
Fig. 1
TM01 1543 4997
Pulley head complete.
Fig. 2
TM01 1544 4997
Slacken and remove the six screws (M6 x 30) holding the
front cover.
Fig. 3
TM01 1545 4997
Loosen the cover by means of dismantling bolts inserted in
the additional holes in the cover.

6Dismantling of pulley head for BME
Fig. 4
TM01 1546 4997
Remove the cover.
Note: Oil will run out when the cover is removed.
Fig. 5
TM01 1547 4997
Slacken and remove the six screws (M5 x 16) holding the
rear cover.
Fig. 6
TM01 1548 4997
Loosen the cover by means of dismantling bolts inserted in
the additional tapped holes in the cover.
Fig. 7
TM01 1549 4997
Puller in the correct position.
Rear cover

Dismantling of pulley head for BME 7
Fig. 8
TM01 1603 4997
Note: Position the curved side as indicated by the arrow.
Fig. 9
TM01 1550 4997
Pull off the pulley.
Note: Push the rear cover backwards and fit the puller di-
rectly to the pulley.
Fig. 10
TM01 1551 4997
Lift off the pulley.
Fig. 11
TM01 1552 4997
Slacken the three screws (M6 x 14) in the spacing pipe.
Rear cover

8Dismantling of pulley head for BME
Fig. 12
TM01 1553 4997
Remove the spacing pipe.
Fig. 13
TM01 1554 4997
Puller in the correct position.
Fig. 14
TM01 1603 4997
Note: Position the curved side as indicated by the arrow.
Fig. 15
TM01 1555 4997
Pull the ball bearing past the first fit.
Normally, the bearing can be removed by hand as the
bearing fits loosely on the stationary shaft.

Dismantling of pulley head for BME 9
Fig. 16
TM01 1556 4997
Pull the ball bearing past the second fit.
Normally, the bearing can be removed by hand as the
bearing fits loosely on the stationary shaft.
Fig. 17
TM01 1557 4997
Puller in the correct position.
Fig. 18
TM01 1559 4997
Press the ball bearing out of the first fit.
Fig. 19
TM01 1558 4997
Press the ball bearing out of the second fit.

10 Dismantling of pulley head for BME
Fig. 20
TM01 1560 4997
Slacken and remove the four screws (M8 x 30) holding the
stationary shaft.
Fig. 21
TM01 1561 4997
Loosen the shaft by means of dismantling bolts inserted in
the additional tapped holes in the shaft.
Fig. 22
TM01 1562 4997
Lift off the stationary shaft.
Take care not to damage the carbon of the shaft seal when
the stationary shaft is lifted free of the rotating shaft.
Fig. 23
TM01 1563 4997
Remove the rotating shaft.

Dismantling of pulley head for BME 11
Fig. 24
TM01 1564 4997
Remove the rotating shaft seal half (left-hand thread).
Use the following tools:
• SV 10 17 – holder for rotating shaft.
• ID 34 07 – hook spanner.
Fig. 25
TM01 1565 4997
Remove the pins from the thrust bearing.
Use the following tools:
• 2 screwdrivers as shown in fig. 25 or
• SV 03 27 – puller as shown in fig. 26.
Fig. 26
TM01 1566 4997
Fig. 27
TM01 1567 4997
Lift off the thrust bearing.

12 Dismantling of pulley head for BME
Fig. 28
TM01 1568 4997
Remove the stationary shaft seal half.
Fig. 29
TM01 1569 4997
The driver pin for the shaft seal should only be removed if it
is defective and a new shaft seal is to be fitted.
Usually, the driver pin is intact.
Driver pin

Assembly of pulley head for BME 13
4. Assembly of pulley head for BME
GRUNDFOS recommends to replace all gaskets.
The parts required are included in Service kit No.
14 51 77.
Use water/soapy water when fitting the gaskets and
rubber parts, however, not for parts in contact with
oil or bearings.
Fig. 30
TM01 1570 4997
Wind tape round the spline to protect the shaft seal O-ring.
Use the following tool:
• SV 10 17 – holder for rotating shaft.
Fig. 31
TM01 1571 4997
Fit the O-ring and remove the tape.
Fig. 32
TM01 1572 4997
Fit the shaft seal half.

14 Assembly of pulley head for BME
Fig. 33
TM01 1573 4997
Tighten the rotating shaft seal half (left-hand thread).
Use the following tools:
• ID 34 07 – hook spanners.
Fig. 34
TM01 1574 4997
Fit the driver pin and the shaft seal. The driver pin should
only be replaced if necessary.
Fig. 35
TM01 1747 5197
During assembly, it must be ensured that the carbon is
never pressed all the way down against the edge of the
steel but just so far that “X” is between 0.5 and 1.0 mm.
Check that the hole in the shaft seal covers the driver pin.
Fig. 36
TM01 1575 4997
Thrust bearing complete.
Driver pin
Edge of steel
X
Driver pin

Assembly of pulley head for BME 15
Fig. 37
TM01 1567 4997
When fitting the thrust bearing, note that the oval holes
(marked with arrows) must be positioned with 90° varia-
tion.
Fig. 38
TM01 1576 4997
Fit the pins in the thrust bearing. The pins must fit easily
into the holes.
Check that the bearing can be moved in all directions.
Fig. 39
TM01 1577 4997
Fit the O-ring and the rubber bearing to the housing.
Fig. 40
TM01 1578 4997
Bearing housing with O-ring and rubber bearing.
Cone

16 Assembly of pulley head for BME
Fig. 41
TM01 1579 4997
Fit the O-ring.
Do not remove the axial bearing unless it is defective.
Fig. 42
TM01 1649 4997
Fit the axial bearing, if required.
Use the following tool:
• SV 00 21 – fitting punch for axial bearing.
Fig. 43
TM01 1580 4997
Bearing housing with O-ring and axial bearing.
Fig. 44
TM01 1581 4997
Lock the axial bearing by deforming the holes with a
screwdriver.

Assembly of pulley head for BME 17
Fig. 45
TM01 1582 4997
Fit the rotating shaft in the housing.
Fig. 46
TM01 1583 4997
Fit the stationary shaft with thrust bearing in the housing.
Note: Take care not to damage the carbon of the shaft
seal.
Fig. 47
TM01 1584 4997
Tighten the four screws (M8 x 30) holding the stationary
shaft.
Fig. 48
TM01 1585 4997
Puller in the correct position.

18 Assembly of pulley head for BME
Fig. 49
TM01 1586 4997
Fit paper in the pulley head so that the ball bearing does
not fall against the second fit.
Press the ball bearing past the first fit of the pulley.
Fig. 50
TM01 1587 4997
Remove the paper.
Press the ball bearing home in the second fit of the pulley.
Fig. 51
TM01 1588 4997
Rear cover.
Fig. 52
TM01 1589 4997
Rear cover with O-ring and seal ring.
Check that the face on which the V-ring is running is clean
and intact.

Assembly of pulley head for BME 19
Fig. 53
TM01 1590 4997
Front cover.
Fig. 54
TM01 1591 4997
Front cover with O-ring and seal ring.
Fig. 55
TM01 1592 4997
Fit the V-ring so that the V (lip) points towards the cover.
Lubricate the V-ring with oil.
Fig. 56
TM01 1593 4997
Fit the ball bearing and push it against the shoulder. There
is a loose fit between the shaft and the bearing.
Note: Place the V-ring on the recess.
V lip

20 Assembly of pulley head for BME
Fig. 57
TM01 1594 4997
Fit the spacing pipe.
Note: The half hole in the spacing pipe must fit over the
hole in the stationary shaft marked with an arrow, as other-
wise the lubricating oil system will be blocked.
Fig. 58
TM01 1595 4997
Tools in the correct position.
Fig. 59
TM01 1596 4997
Note: Position of tools.
Fig. 60
TM01 1597 4997
Fit the pulley.
Note: Fit the puller to the rear cover and not to the pulley.