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2
DRIVE MOTOR 2.12
5 Inspect the balance plate for scratches or wear (fig.
C262).
6 Inspect the splines on the valve drive and geroler
drive for wear.
7 Inspect the keyway and chamfers on the output shaft
for sharp edges or burrs which could damage the shaft
seal.
8 Inspect the face of the bearing housing (fig. C263)
for scratches or wear.
Inspection (cont’d)
Assembly
C262
C263
C264
Install new seals when reassembling the torque motor.
Lubricate the seals a light grease such as petroleum jelly
prior to assembly.
1 Install the shaft face seal in the bearing housing
using a suitalble tool to seat the seal (fig. C264)
Place the bearing housing on a smooth, flat surface with
the largest open end of the housing facing upward.
Align the small I.D. end of the seal installation tube with
the seal seat in the housing (fig. C264). Apply light
grease to the seal. Install the seal in the bore of the
installation tube as shown. Insert the seal driver in the
tube and push the shaft seal with a rotating action until it
is seated.
Check for correct installation. A damaged shaft face seal
will cause losss of internal lubrication and result in parts
wear.
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