Filter
Top Products
33
MAINTENANCE COMPONENT REPLACEMENT
This section covers replacement of many
components of the Group 14 drive. Note that
some components are not field repairable.
If it should ever be necessary to replace the
output gear, shaft, or output shaft bearings, a
major overhaul is required and the drive should
be returned to the factory.
GASKETS
During routine service, inspect the gaskets
and O-rings for wear or damage. In order to
protect internal components, worn or damaged
gaskets and O-rings should be replaced.
To remove the main gear cover, terminal
compartment, or the motor gaskets, scrape all
of the old adhesive and gasket material from the
body housing and cover. Cement the new gasket
to the drive body using a gasket cement such
as 3M #847 Rubber and Gasket Adhesive, or
equivalent.
O-ring seals are used between the body
and the top and bottom bearing plates. Before
installing a new O-ring, lubricate it with light
machine oil.
The large top cover is sealed with rubber foam
gasket material, 5/16” in diameter. To replace
this material, scrape the old gasket material and
cement from the groove. Cement the new foam
gasket into the groove with 3M #847 Rubber and
Gasket Adhesive, or equivalent. Cut the ends
of the material on an angle and cement them
together with this same adhesive.
SEALS
Worn or damaged output shaft and motor
shaft seals should be replaced to prevent damage
to internal bearings and drive train parts.
To remove the shaft seal, push the blade of a
small screwdriver along the shaft and under the
seal lip. CAUTION: The seal is approximately
1/4” wide. Do not force the screwdriver blade
beyond the width of the seal; damage to the shaft
bearing could result. Pry up on the seal and
force it out of the housing. Clean the shaft and
housing and press in the replacement seal with
the closed side facing outward.
BEARINGS
There are some field replaceable bearings
in the Group 14 drive. Consult the factory for
details.
MOTOR
The control motor is not field-repairable.
Disassembly of the motor will result in a loss of
torque that can only be restored by returning the
motor to the factory for remagnetizing.
CAUTION
Before removing the motor assembly, while
the process is running, block the valve stem
to prevent the gear train from moving when
the motor is removed.
To remove the motor, first disconnect the motor
wires in the terminal compartment of the control
drive. The wiring is under the terminal board.
Remove the black wire from the terminal post, cut
the green motor wire near the green-yellow-red
butt joint and disconnect the red wire from the re-
green-blue butt connection. Remove the hardware
that secures the motor (model 14-10_ has three
10-32 socket head cap screws and model 14-20_
has four 1/4-20 hex head bolts). Carefully slide
the motor out of the drive body.
To install the motor, insert the three-wire
sleeve through the wire hole in the motor mount
and into the terminal compartment. Carefully slide
the motor into the drive body, rotate the motor
shaft if necessary to engage the pinion with the
first combination gear. Install motor mounting
hardware and torque to appropriate values (10-32
socket head cap screws (20 lb-in) or 1/4-20 hex
bolts (6 lb-ft)). Reconnect the motor wires.
NOTE: 14-100 models with 4 and 8 second
timing have a spacer between the motor and
gear module.
MOTOR RESISTOR AND
CAPACITOR
The motor resistor assembly and capacitor
are located in the top compartment beside the
Calibar. To replace a resistor or capacitor, remove
the top cover (15/16” bolt head). Remove the
existing part and transfer the wires one at a time
to the replacement part. Inspect the top cover
gasket and replace if necessary. Replace the top
cover. Tighten the top cover bolt just enough to
compress the O-ring seal.