DE-STA-CO PN500 - Manual (Page 39)

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SECTION 8: Repair and Replace (continued)
8.4.1.1.3.2. The distance from the finished face of the housing
to the unmarked face of the gear, noted at the time
of disassembly, must be duplicated, either by
grinding the adjusting spacer or adding shims (see
Figure 19).
8.4.1.1.3.3. Tighten the clamp screw in the split hub of the gear
and assemble the gear retaining screw and
washer, if such were provided as part of the factory
installation.
8.4.1.1.3.4. Press cones of the tapered bearings onto the
worm shaft and insert the worm shaft in the
housing.
8.4.1.1.3.5. Assemble bearing cups, shims and caps and
establish pre-load, 2 IN-LBS, .003 SHIM. Adjust
shims under bearing cups until the dimension
between the worm bearing shoulder and the
finished housing bore, as recorded at the time of
disassembly, is duplicated (see Figure 19).
NOTE: Do not discard any of the shims. Make
adjustments in pre-load by shifting shims from one
bearing cup to the other.
8.4.1.1.3.6. Replace cover plate and refill with oil. Refer to
Chart 1 & 3 for quantity and specification.
8.4.2. Winsmith Worm Gear Reducer
NOTE: Due to its modular and hollow shaft design, it is not considered
economical to replace components only in these reducers. Except for seal or
other oil leak problems, replacement of entire reducer is recommended.