Operating Instructions OIO 14en Edition 07/2017 43
Mounting instructions OMG100/140
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.
2. Use light blows of a plastic tip hammer to drive the set of screws together with the bearing cover
080.1 out of the measuring housing 128, see Fig. 20, page 42 and pull out.
3. Loosen the circlips 870.1 and 870.2 from recesses in the bearing cover, see Fig. 21, page 42, screw
out the socket screw 915.6.
4. Remove the lock washer 904.1 and supporting ring 064.1. Turn in the socket screw 915.6 back
completely in order to pull the pole wheel 259 and bearing cover 080.1 from the set of screws using
an extractor. Remove the spacer 056*** or sleeve 041 respectively. see Fig. 23, page 42.
5. Remove the measuring screws from the bearing cover 080.1. Remove the O-rings 739.1 and
739.5**, see Fig. 19, page 42.
6. Screw out the socket screw 915.7 with lock washer 904.2 and supporting ring 064.2 at the
measuring screw small 672.2.
7. Remove the circlips 869.2 and 869.4 and support rings 868.2 and 868.4 from the measuring screws.
8. Pull the bearings from the screws using the extractor. Avoid damage to the threads.
Notice: 821.1 and 821.2 are four-point contact bearings.
9. Screw the socket screw 915.6 out again and remove the support rings 868.1 and 868.3.
Installing seals and bearings
1. Insert the O-ring 739.1 and 739.2 into the bearing cover 080.1 and 080.2. Insert the O-ring 739.5**
into the pick up hole.
2. Slide the circlips 870.1 and 870.2 and support rings 868.1 and 868.3 onto the measuring screw large
672.1 and measuring screw small 672.2.
3. Press the ball bearings 821.1, 817.1, 821.2 and 817.2 onto the measuring screw large 672.1 and
measuring screw small 672.2. Notice: Press the ball bearings on only over the inner ring.
4. Pull the wedge lock washer 904.2 and supporting ring 064.2 onto the socket screw 915.7.
Notice: Ensure that the wedge lock washers are positioned correctly (wedge surface to wedge
surface), see Fig. 22, page 42.
5. Mount the socket screw 915.7, with Loctite 242 applied, with mounted washer and ring onto the
measuring screw small 672.2 and tighten with torque, see Tab. 2, page 53.
6. Slide the measuring screws into the bearing cover 080.1. Mount the circlips 870.1 and 870.2.
7. Slide the spacer 056** or sleeve 041 onto the measuring screw large. Press the pole wheel 259 on.
8. Pull the wedge lock washer 904.1 and supporting ring 064.1 onto the socket screw 915.6.
Notice: Ensure that the wedge lock washers are positioned correctly (wedge surface to wedge
surface), see Installation step 4.
9. Mount the socket screw 915.6, with Loctite 242 applied, with mounted washer and ring onto the
measuring screw large and tighten with torque, see Tab. 2, page 53.
10. Mount the support rings 868.2 and 868.4 and circlips 869.2 and 869.4 on the floating bearing end.
11. Place the bearing cover
080.2 onto the measuring housing 128 and tighten with torque the socket
screws 915.2.
12. Slide the bearing cover 080.1 with pre-mounted measuring unit, consisting of set of screws, bearings
and pole wheel, into the measuring housing, tighten with torque the socket screws 915.1.
13. Mount the flange cover while pretensioning the oiled screws crosswise. Tightening torque see
Tab. 2, page 53.
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