Nexen MBU-875 930200 - Manual (Page 6)

6
FORM NO. L-20134-J-1211
MODULAR INPUT CLUTCH (MIDO)
NOTE
The Modular Drive Unit (MDU) Ball Bearing (Item
27) is loose fitting by design. Do not allow this Ball
Bearing to fall off the MDU.
1. Place the Modular Drive Unit (MDU) on a table with the Ball
Bearing (Item 27) facing up and properly seated against the
Retaining Ring on Models 625 and 875.
2. Set the Modular Output Unit (MOU) onto the MDU, making
sure the Ball Bearing (Item 27) is fully seated into the bore
of the MOU.
3. Rotate the MOU until the four clearance holes are aligned
with the four MDU tapped holes.
4. Press the MOU down against the Compression Spring (Item
14) until the faces of both units are flush.
NOTE
Make sure the air inlet ports are properly aligned for
your mounting requirements.
5. Using the four Socket Head Cap Screws (Item 31), secure
the MOU to the MDU.
6. Alternately and evenly tighten the four Socket Head Cap
Screws (Item 31) to 35 ft-lb [47 Nm] torque.
FIGURE 3
Modular
Output Unit
Key
(Item 19)
Modular
Input Unit
Hex. Head
Cap Screws
(Item 33) and
Lock Washers
(Item 24)
Hex. Head Jam
Nut (Item 45)
Modular
Drive Unit
Ball Bearing
(Item 27)
Compression
Spring
(Item 14)
Socket Head
Cap Screws
(Item 31)
CONNECTING UNITS TO FORM COMBINATIONS
(continued...)
Refer to Figure 3.
7. Place the Key (Item 19) into the shaft of the Modular Input
Unit (MIU); then, slide the MIU shaft into the MDU.
8. Using the four Hex. Head Jam Nuts (Item 45), Hex. Head
Cap Screws (Item 33), and Lock Washers (Item 24), secure
the MIU to the MDU.
9. Alternately and evenly tighten the four Hex. Head Jam Nuts
(Item 45) to 20 ft-lb [27 Nm] torque.
FIGURE 4
Modular
Brake Unit
Key
(Item 19)
Modular
Input Unit
Hex. Head
Cap Screws
(Item 33) and
Lock Washers
(Item 24)
Hex. Head Jam
Nut (Item 45)
Modular
Drive Unit
Ball Bearing
(Item 27)
Compression
Spring
(Item 14)
Socket Head
Cap Screws
(Item 31)
MODULAR INPUT CLUTCH-BRAKE (MIDB)
Refer to Figure 4.
NOTE
The Modular Drive Unit (MDU) Ball Bearing (Item
27) is loose fitting by design. Do not allow this Ball
Bearing to fall off the MDU.
1. Place the Modular Drive Unit (MDU) on a table with the Ball
Bearing (Item 27) facing up and properly seated against the
Retaining Ring on Models 625 and 875.
2. Set the Modular Brake Unit (MBU) onto the MDU, making
sure the Ball Bearing (Item 27) is fully seated into the bore
of the MBU.
3. Rotate the MBU until the four clearance holes are aligned
with the four MDU tapped holes.
4. Press the MBU down against the Compression Spring (Item
14) until the faces of both units are flush.
(continued...)
CAUTION
Never substitute Hex. Head Cap
Screws for the Socket Head Cap
Screws (Item 31).