40 OIO 14en Edition 07/2017 Operating Instructions
Mounting instructions OMG 52/68
Maintenance
Prerequisites
□ Flowmeter removed from the system
□ End connection consisting of socket screws, flanges and seals removed
□ Pick up inserts removed
1. Remove the socket screws 915.1 and 915.2, take off the bearing cover 080.2. Remove the O-ring
739.2, without picture.
2. Use light blows of a plastic tip hammer to drive the screw set together with the bearing cover 080.1
out of the measuring housing 128 and pull out, see Fig. 11, page 39.
3. Screw out the socket screw 915.6 with lock washer 904.1 and supporting ring 064.1 from the
measuring screw large 672.1. Remove the pole wheel 259 and the spacer 056, see Fig. 12, page 39.
4. Screw out the socket screw 915.7 with lock washer 904.2 and supporting ring 064.2 from the
measuring screw small 672.2, see Fig. 12, page 39.
5. Remove the screw set from the bearing cover 080.1 using an extractor.
6. Screw out the threaded rings 057.1 and 057.2 of the bearing cover, see Fig. 14, page 39. For allen
key widths, see Tab. 2, page 41.
7. Take the spacer 054 out, and pull the bearings 818.1 and 818.2 out of the bearing cover using an
extractor.
8. Remove the O-rings 739.1 and 739.5**, see Fig. 15, page 39.
9. Remove the circlips 869.2 and 869.4 and support rings 868.2 and 868.4 from the measuring screws,
see Fig. 16, page 39.
10. Pull the bearings 817.1 and 817.2 from the measuring screws using an extractor.
054
056
057.1
057.2
064.1
064.2
080.1
128
259
672.1
Spacer
Spacer
Threaded ring
Threaded ring
Supporting ring
Supporting ring
Bearing cover
Measuring housing
Pole wheel
Measuring screw large
672.2
739.1
739.5**
817.1
817.2
818.1
818.2
868.2
868.4
869.2
Measuring screw small
O-ring
O-ring
Deep-groove ball bearing
Deep-groove ball bearing
Angular-contact ball bearings
Angular-contact ball bearings
Support ring
Support ring
Circlip
869.4
904.1
904.2
915.6
915.7
**
Circlip
Lock washer
Lock washer
Socket screw
Socket screw
two units if two pick
up holes exist
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