ABB LME620AI Service Instruction page 10

5.2.2 Motor shaft sealing ring
The motor shaft sealing ring prevents that debris or dirt get into the motor housing.
Once the stator is out, use two appropriate hooks (1) to pull the motor sealing ring (2) out; see fig. 7.
5.2.2.1 Removal
Fig. 7:
5.2.2.2 Installation
sleeve
Fig. 8:
- grease the new sealing ring and press it in the flange as shown in fig. 8.
- make sure that the „open" part of the sealing ring points towards the interior of the gearbox; see fig. 8.
- use appropriate squeezer or similar device to press the sealing ring uniformly into the flange (see right
part of fig. 8)
5.2.3 Motor installation
- put the stator into the actuator housing
- make sure, the hose protected cables are within the groove (see fig. 9)
- put the rotor with the brake body into the stator housing
- tighten the 4 motor screws
- tighten the 4 grub screws to tense rotor / stator housing
- use appropriate retainer (DELO-ML 5228 or LOCTITE 243; both medium-firm; detachable) to secure
the grub screws
(refer to fig. 5 + 6 for reference no.)
10 Electrical Linear Actuators for Continuous Modulating Control LME620AI / LME620AN (Contrac)
1
(68de0015)
interior of
gearbox
flange
sealing ring
mounting
sleeve
gearbox
Maintenance
squeezer
(68de0007)
43/68-13 EN