English (GB)
7
Removing the bearings and shaft seals, non-drive end
1. Remove the four screws (114a) holding the bearing cover
(113d).
2. Remove the bearing cover (113d) and gasket (113e).
3. Loosen the set screw in the bearing snap ring (54).
4. Loosen the bearing snap ring (54) by moving it against the
direction of rotation.
5. Remove any marks from the set screws on the shaft non-drive
end (51).
6. Remove the screws (114).
7. Pull the seal housing
(124) off the shaft (51) using a puller,
and then remove the gasket (109b).
8. Pull the spring, washer and rotary shaft seal part (105) off the
shaft (51).
9. Pull the bearing (54) out of the seal housing (124).
10. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
Removing the bearings and shaft seals, drive end
1. Remove the key (11a).
2. Remove the four screws (114a) holding the bearing cover
(113c).
3. Remove the bearing cover (113c) and gasket (113e).
4. Loosen the set screw in the bearing snap ring (53).
5. Loosen the bearing snap ring (53) by moving it against the
direction of rotation.
6. Remove any marks from the set screws on the shaft drive end
(51).
7. Remove the screws (114).
8. Pull the seal housing (124) off the shaft (51) using a puller,
and then remove the gasket (109b).
9. Pull the spring, washer and rotary shaft seal part (105) off the
shaft (51).
10. Pull the bearing (53) out of the seal housing (124).
11. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
Removing the upper pump housing
1. Loosen the screws (26c), and remove them.
2. Loosen the screws (26d), and remove them (only pump type
LS 65-50-330).
3. Loosen the upper pump housing by means of a jacking screw
(inch threads).
4. Lift off the upper pump housing (6a).
Removing the shaft, impeller and gasket
1. Lift the shaft (51), including the impeller (49) and wear rings
(45b), free of the lower pump housing (6b).
2. Remove the wear rings (45b).
3. Remove the gasket (72a) from the pump housing (6b), and
clean the packing face.
Removing the impeller
1. Remove the impeller nut (67a).
2. Push the shaft until the key (11) is free of the impeller (49).
3. Pull the shaft (51) out of the impeller (49), and remove it.
4.2.2 LS with sleeve, construction type 2
The position numbers in the following refer to section
Removing the motor
1. Remove the coupling guard.
2. Remove the screws and nuts from the coupling halves.
3. Carefully loosen and remove the spring using a screwdriver.
4. Remove the screws holding the motor on the base frame.
5. Lift off the motor.
6. Loosen the set screws in the coupling flange of the pump.
7. Pull the coupling flange off the pump shaft using a puller.
Removing the bearings and shaft seals, non-drive end
1. Remove the four screws (114a) holding the bearing cover
(113d).
2. Remove the bearing cover (113d) and gasket (113e).
3. Loosen the set screw in the bearing snap ring (54).
4. Loosen the bearing snap ring (54) by moving it against the
direction of rotation.
5. Remove any marks from the set screws on the shaft non-drive
end (51).
6. Remove the screws (114) or the nuts (36).
7. Pull the seal housing (124) off the shaft (51) using a puller,
and then remove the slinger (79) and O-ring (109).
8. Pull the spring, washer and rotary shaft seal part (105) off the
shaft (51).
9. Remove the slinger (79), and then pull the bearing (54) out of
the seal housing (124).
10. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
Removing the bearings and shaft seals, drive end
1. Remove the key (11a).
2. Remove the four screws (114a) holding the bearing cover
(113c).
3. Remove the bearing cover (113c) and gasket (113e).
4. Loosen the set screw in the bearing snap ring (53).
5. Loosen the bearing snap ring (53) by moving it against the
direction of rotation.
6. Remove any marks from the set screws on the shaft drive end
(51).
7. Remove the screws (114) or the nuts (36).
8. Pull the seal housing (124) off the shaft (51) using a puller,
and then remove the slinger (79) and O-ring (109).
9. Pull the spring, washer and rotary shaft seal part (105) off the
shaft (51).
10. Remove the slinger (79), and then pull the bearing (54) out of
the seal housing (124).
11. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
Removing the upper pump housing
1. Loosen the screws (26c, 26d), and remove them.
2. Fit the screws (26c) in the dismounting holes, thereby
loosening the rest of the pump housing (6a).
3. Lift off the upper pump housing (6a).
4. Remove the screws (26c) from the dismounting holes, and
then knock up the guide pins so that they are not damaged.
Summary of Contents for LS 100-80-241
Page 1: ...LS Service instructions GRUNDFOS INSTRUCTIONS ...
Page 2: ...2 ...
Page 22: ...English GB 22 9 Sectional drawings 9 1 LS with sleeve construction type 1 TM03 9952 4707 ...
Page 30: ...English GB 30 Fig 18 Construction type 3 LS 100 80 241 XE TM03 9951 4317 ...
Page 34: ...English GB 34 Fig 25 Construction type 4 LS 300 200 489 LS 350 250 508 TM03 9942 4317 ...
Page 44: ...44 ...
Page 45: ...45 ...
Page 46: ...46 ...
