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Maintenance
A705-61-880 Issue M
17.Check that the gap (detail A, item 20) is as shown below.
18.If the gap is not correct:
Check that the flange of the pump-motor (19) is correctly located against the flange of the coupling
housing (7).
If the pump-motor is correctly fitted, loosen the set screw (7) on the drive hub (16) and adjust the
position of the coupling hub, then tighten the set screw again. Continue at Step 17 to check that the gap
is now set correctly.
19.Apply a suitable thread sealant to the set screw (4) then fully tighten it to secure the drive hub (16) to the motor
shaft (18).
20.Fit the coupling insert (15) to the gaps between the teeth on the drive hub (16) and coupling hub (14).
21.Turn the holding ring (17) so that the reference line on the holding ring is aligned with the split in the coupling
insert (15), then slide the holding ring over the insert.
22.Tighten the set screws (3) to secure the holding ring (17) in place.
23.Ensure that all of the fixing bolts (1) are tightened to a torque between 128 and 132 Nm (94 and 97 lbf ft).
24.Use the four bolts (13) to secure one of the coupling covers (12) to the coupling housing (7). Tighten the bolts to
a torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
25.Use the four bolts (13) to secure the other coupling covers (12) to the coupling housing (7). Tighten the bolts to
a torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
Pump Gap setting
GV250, 50 Hz -1.5 mm
*
*
The end of the motor shaft protrudes beyond the face of the coupling.
GV250, 60 Hz -1.5 mm
*
GV400, 50 Hz 7.0 mm
GV400, 60 Hz 26.0 mm
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