Milnor 30015 Service Manual Download

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MSSM0706BE/9273DV

DRIVE TRAIN SERVICE FOR ALL 30015 AND 30022
RIGID MOUNT WASHER-EXTRACTORS

Provide part number, model and serial number of the machine when ordering replacement parts from Milnor

Part numbers for clutches, belts, and pulleys are located on the machine drive chart drawings (if provided), see the
Table of Contents. When ordering motors, provide the motor nameplate description. Clutches should be purchased
from Milnor

to ensure optimum performance and service life.

ENTANGLE AND CRUSH HAZARD—Belts and pulleys can entangle and crush
body parts.

☞

Lock OFF and tag out power at the wall disconnect before servicing.

Replacing Belts

Remove single motor (FIGURE 1) or dual motor (FIGURE 2) drive belts by loosening the threaded jacking

rods that determine the belt tension for that pulley. Do not force belts off by prying and turning pulley. Check
belt tension and pulley alignment after replacing the belts. When replacing belts on dual motor drive machines,
observe the following:

1. Replace both the drain belt and extract belt (FIGURE 2) if either is worn.

2. Do not replace individual belts of multiple-belt sets. Replace these belts as a set. Replacement belts must

be of the same type and style. Do not use belts from different manufacturers in multiple-belt drive sets.

NOTE: Some manufac-
turer’s v-belts are more
suitable for certain appli-
cations than others. Con-
sequently, it is best to
purchase replacement
belts from the original
manufacturer of the
equipment, or at least pur-
chase the exact style and
type belt the machine was
originally equipped with.
If you are dissatisfied
with the performance of
the original belts, ask the
equipment manuafacturer
if a better belt is available
for that application.

Testing Belt Tension

NOTE: Use the “Initial Tension” column (Table A
or B below) when adjusting belts that have never
been used. Use the “Final Tension” column when
adjusting belts that have been used.

Check belt tension (FIGURE 3) when replacing

and adjusting drive train components. Belt tension test-
ing tool (Milnor

part number 30T001), straight edge,

and Belt Tension Tables are required when setting belt
tensions. Do not refer to instruction sheet provided
with tension testing tool. Check tensions for new belts
according to the following schedule:

•

After 24 hours of operation (three eight-hour days)

•

After 80 hours of operation (ten eight-hour days)

•

After 160 hours of operation (twenty eight-hour days)

1. Move upper O-ring on the tension testing tool to the uppermost position (resting against the bottom edge of

sliding cap).

2. Determine deflection for the tested belt (see FIGURES 1 and 2 for the belt location and Tables A and B for

the setting range). Move lower O-ring to the correct setting (inches or centimeters) on scale. Read the bot-
tom edge of the O-ring.

3. Place a straight edge along the top edge (pulley to pulley) of the belt to be tested (FIGURES 1 and 2). Depress

the tension testing tool by sliding the cap against the middle of the belt span until the bottom edge of the
lower O-ring aligns with the straight edge as shown in FIGURE 3.

4. Read the top edge of the upper O-ring position and determine if it is within the specified range. If the readings

are below the specified range, tighten the belt. If the readings are above the specified range, loosen the belt.
Adjust the belt and repeat steps one through four until tension is within the specified range.

Table A—Belt Tension Specifications—All Belts on Dual Motor Machines

Except Main Drive Belts

Belt Application

Belt Deflection

inches (millimeters)

Initial Tension

pounds (kilograms)

Final Tension

pounds (kilograms)

Wash

3/16

(4.76)