Nexen MBU-1125 937300 - Manual (Page 13)

13
FORM NO. L-21087-C-1010
NOTE
Modular Units must be unmounted and separated into individual components prior to maintenance or repair. Make sure
you are in the correct section for the size and model of the Modular Unit you are repairing.
MODULAR INPUT UNIT (MIU)
Models 1125 and 1375
1. Remove both Retaining Rings (Item 35).
2. With face of Bearing Flange (the side without ribs) (Item 20)
facing down and fully supported, press Stub Shaft (Item 11)
down and out of the Bearing Flange.
NOTE
One Ball Bearing (Item 30) will come out with the Stub
Shaft (Item 11).
3. Remove the first old Ball Bearing (Item 30) from Stub Shaft
(Item 11).
NOTE
Do not remove the two Retaining Rings (Item 58) from
the Bearing Flange (Item 20) (See Figure 10).
4. Press the second old Ball Bearing (Item 30) out of the
Bearing Flange (Item 20).
FIGURE 10
35 30
20 58 30
35
This Ball Bearing will come out
with the Stub Shaft and is the
Ball Bearing installed in Step 6.
Install this Retaining Ring
first; then, press the Ball
Bearing onto the Stub Shaft
(See Step 7).
19
11 19
58
5. Clean the bore of the Bearing Flange (Item 20) with fresh
solvent, making sure all old Loctite ® residue is removed.
6. Apply an adequate amount of Loctite ® 680 to evenly coat
the outer race of the first new Ball Bearing (Item 30); then,
press this Ball Bearing into the Bearing Flange (Item 20)
until it is seated against the Retaining Ring (Item 58).
7. Reinstall the first Retaining Ring (Item 35) on Stub Shaft
(Item 11).
8. Fully support the inner bearing race of the second new Ball
Bearing (Item 30) and press it onto the Stub Shaft (Item 11)
until it is seated against the Retaining Ring (Item 35).
9. Apply an adequate amount of Loctite 680 to evenly coat the
outer race of the second new Ball Bearing (Item 30).
10. Supporting the inner race of the Ball Bearing located in
the Bearing Flange (Item 20), press the second new Ball
Bearing (Item 30) and Stub Shaft (Item 11) into the Bearing
Flange and Ball Bearing until the second new Ball Bearing
is seated against the Retaining Ring (Item 58).
11. Reinstall the second Retaining Ring (Item 35).
PARTS REPLACEMENT
(continued...)
Refer to Figure 10.
CAUTION
Special attention should be exercised
when working with retaining rings. Always
wear safety goggles when working with
spring or tension loaded fasteners or
devices.