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4. Install the ground resistor (Item 2) and spring
(Item 1) back into the drive shaft. Install the
cable/motor assembly per "Cable Assembly
Replacement" in the "Maintenance" section.
C A U T I O N
!
† DO NOT Apply Dielectric Grease to the
Resistor (Item 2), Spring (Item 1), or Inside
and Outside Diameters of the Drive Shaft.
† The application of dielectric grease or
any other lubricant to these components
can cause premature failure of the motor.
Ceramic Seal Replacement
(Refer to Figure 24)
1. Unscrew nut (Item 3) and pull the drive shaft
(Item 7) with all ceramic seal components
attached out of the barrel.
2. Remove the O-rings (Item 6) from the drive
shaft, taking care not to damage the drive shaft.
3. Using a screwdriver, loosen the two set screws
(Item 2) (about two turns counterclockwise) of
the collar (Item 1) and remove the collar and
nut (Item 3) from the drive shaft.
4. Slide outer ceramic seal (Item 5) and inner
seal (Item 6) off the drive shaft.
5. Remove the remaining two O-rings (Items 4
and 9) from the drive shaft.
6. Discard the ceramic seal (Item 5), PTFE seal
(Item 8), O-rings (Items 4,6 and 9). Examine
the drive shaft and replace if damaged.
7. Slide O-ring (Item 10) over drive shaft until it
bottoms on shoulder. Install O-ring (Item 6)
into second O-ring groove of drive shaft.
† Lightly lubricate the O-rings only with
petroleum jelly. DO NOT USE SILICONE
LUBRICANTS!
AH-13-01.3
No. 2 Process Electric Motor Version - MAINTENANCE
NOTE
Figure 24: Ceramic Seal Replacement
CERAMIC SEAL REPLACEMENT
(Figure 24)
Item #
Collar
1
Set Screw (2) Required
2
Nut
3
O-ring
4
Outer Ceramic Seal
5
O-ring (2) Required
6
Drive Shaft
7
Inner PTFE Seal
8
O-ring
9
8. Place PTFE seal (Item 8), with shoulder fac-
ing toward front end of drive shaft, onto the
drive shaft and slide it back until it contacts
O-ring (Item 9).
C A U T I O N
!
† Clean the inner and outer faces of the
new seals and the front portion of the shaft
carefully with solvent before replacing them.
Oil or dirt deposit from the hands could
cause an improper contact of seal faces.
This is a DRY seal and DOES NOT require
grease or oil.
9. Install O-ring (Item 4) on ceramic seal (Item
5) and slide the ceramic seal onto drive shaft
(Item 7) until it contacts PTFE seal (Item 8).
Description
35
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