Mechanical Assemblies
Accutronix MX Maintenance & Spare Parts Manual 130-12000 Revision B • November 2002
4.12.1 Removal
FIRST REMOVE
1. Remove actuator from mounting adapter.
2. Drain oil.
3. Remove thrust base (subassembly #10) - if fitted. (See Section 4.8.1.)
4. Remove motor (subassembly #4). (See Section 4.1.1.)
5. Remove worm shaft (subassembly #3). (See Section 4.10.1.)
6. Remove top-mounted handwheel (#1-8) or side-mounted handwheel (subassembly #16).
(See Section 4.3.1 or 4.4.1.)
7. Remove handwheel adapter (subassembly #12). (See Section 4.14.1.)
8. Remove clutch and clutch ring (subassembly #16). (See Section 4.15.1.)
9. Remove handwheel declutch (subassembly #5). (See Section 4.2.1.)
10. Remove base plate (subassembly #11). (See Section 4.9.1. or
Section 4.12.a for MX-85 & 140)
a WARNING (MX-85 & 140)
The drive sleeve assembly may slip and fall out of housing when removing baseplate assembly. Hold drive sleeve
assembly in from opposite end when removing baseplate assembly. See optional drive sleeve and baseplate removal
Section 4.12.a & 4.12.b.
STEP 1
a WARNING
Potential to operate while dangerous mechanical parts are
exposed during subassembly removal. To prevent injury, turn off all power
sources to actuator before removing drive sleeve assembly. Power sources
may include: main power or control power.
Once all other subassemblies are removed, pull out the drive sleeve
assembly (#2) until the lower bearing (#2-4) is released from the
actuator housing. Remove drive sleeve assembly from actuator.
MX-85 & 140: Optional drive sleeve and baseplate removal
instructions.
STEP 2 (VIEWED FROM BASEPLATE SIDE OF ACTUATOR)
CAUTION
(MX-20 & 40) The drive sleeve surface serves as an oil sealing
surface. Use caution not to scratch the drive sleeve while completing removal
and remounting.
Tip To avoid interference between drive sleeve assembly
and encoder drive cartridge (subassembly #14), turn flat
on worm gear to be parallel and on same side as encoder bevel gear.
4-45
Flow Control Division
Limitorque Actuation Systems
1A
2
Encoder
drive
cartridge
(14)
Worm
gear
flat
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