Instruction manual

It is essential when removing the gear reducer, to record the positions of these shims so that they may be
replaced in the exact same position later. Bearing this in mind, carefully remove the gear reducer mount-
ing bracket (with the reducer attached) from the drive base. Note that the clutch tire, attached to the reducer
output shaft, must be allowed to slip out of the clutch drum as the reducer is removed.
4a. On 64" machine models only (i.e., 64042BTN), check and adjust the jacking bolts on the gear reducer sup-
port bracket under the input shaft side of the reducer to be sure they are just touching the drive base. Leave
the angle bracket between the reducer mounting bracket and the drive base side members firmly attached to
the drive base. Remove only the two bolts and one dowel pin on each side of the reducer mounting bracket
that attaches it to the angle brackets.
5. The gear reducer should not be unbolted from the mounting bracket unless absolutely necessary (i.e., replac-
ing an old gear reducer with a new one); since this will complicate clutch alignment. The clutch tire may be
removed from the gear reducer by removing the retaining locknut, as well as the connection where the short
length of copper tubing meets the reducer shaft, then gently working the assembly off of the tapered shaft
with a rubber mallet or pulling fixture. The clutch drum may also be removed from the jackshaft, if re-
quired, by removing the retaining locknut and pulling the drum off with a pulling fixture. Do not attempt
to drive the drum off with a hammer or mallet.
6. In addition to any other required maintenance, inspect the various belts and the clutch tire. These components
should be replaced at this time if they show appreciable wear. It is highly recommended to replace the belts
that drive the clutch drum pulley, unless these are brand new.
ËTo Replace the Gear Reducer and Clutch
—Reassemble all components in reverse order of their re-
moval. Remember that all components such as motors, brake, etc. must be properly adjusted, using the align-
ment procedures described herein.
When the gear reducer and mounting brackets are replaced on the drive base, with the shims replaced in their
original positions, this should achieve rough alignment of the reducer. If, however, the gear reducer was removed
from its mounting brackets, or the jackshaft was removed from its housing, the reducer may be out of rough align-
ment.
To align the gear reducer and clutch:
1. Observe the position of the clutch tire within the drum and check for clearance between the tire and drum all
around, with a feeler gauge. Determine that the tire is roughly centered within the drum. If it is, skip to
step 3. If not, proceed to step 2a or 2b.
2a. For all machines except 64" models, add or remove shims from between the gear reducer mounting brack-
ets and drive base as required to roughly position the clutch tire within the drum in accordance with the
“CLUTCH ALIGNMENT REQUIREMENTS” drawing.
2b. On 64" machine models only (i.e., 64042BTN), remove the two bolts and one dowel pin from each side of
the gear reducer mounting bracket and using C-clamps to secure the mounting bracket to the angle brackets,
adjust the position of the gear reducer to achieve rough alignment in accordance with the “CLUTCH
ALIGNMENT REQUIREMENTS” drawing. If the existing bolt holes are now misaligned, either enlarge
the existing holes or drill new holes as required and reinstall the four bolts. Mark any new bolt holes as be-
ing the correct ones. Do not reinstall the dowel pins.
3. Temporarily disconnect the internal air line to the gear reducer and connect an external, valve-controlled air
line to the reducer, but do not inflate the tire yet.
4. Loosen but do not remove the bolts that attach the gear reducer mounting brackets to the drive base. (On 64"
machine models, check to be sure the jacking bolts under the input shaft side of the reducer are resting on
the drive base then loosen the bolts and remove the dowel pins if they were reinstalled.)
5. Inflate the clutch tire to cause the gear reducer to position itself with the clutch precisely centered. (It should
move very little, if at all.)
6a. On all machines except 64" models, add or remove shims as required to firmly seat the reducer mounting
brackets on the drive base and tighten down the mounting bolts.
6b. On 64" machine models only (i.e., 64042BTN), tighten down the mounting bolts. If the dowel pin holes
are aligned, reinstall the pins. If the holes are not aligned, drill new holes, install the dowel pins, and mark
the new holes as being the correct ones.
7. Replace the internal air line to the gear reducer.
8. Energize power to the machine and run in wash, while observing for any evidence of gear reducer misalign-
ment such as 1) wobbling of the gear reducer or related components, or 2) any apparent difficulty of the
clutch tire to engage the drum (i.e., an extended squealing sound).
9. If any of the above symptoms are observed, repeat the alignment procedures.
ÊJackshaft Replacement: 52", 60", 64", and 72" Machines
Jackshaft components may be found in the JACKSHAFT BEARING ASSEMBLY drawing for your machine.
Replacement jackshafts are supplied, preassembled and are installed as a one-piece unit. To replace the jackshaft,
proceed as follows:
1. Remove belts, gear reducer, and clutch drum exactly as previously explained.
2. Lower the drive base using the drive base jacking bolts. Remove the main drive belts and the jackshaft pulley.
3. Remove the grease fittings (or grease lines as appropriate).
4. To remove the jackshaft bearing assembly from its housing, it is convenient to remove the mounting plates
from both ends of the housing. Shims may have been installed between the mounting plates and the housing
to align the jackshaft within the housing. It is essential to record the positions of these shims, so that
they may be replaced in the exact same position later.
On some models, the front mounting plate differs from the rear plate. Therefore, it is also necessary to identify
the mounting plates as front or rear, so that they will be returned to the same positions. Remove each mounting plate
by first unbolting the jackshaft from the plate then unbolting the plate from the housing.
5. Remove the jackshaft bearing assembly from the housing.
6. In addition to any other required maintenance, inspect all belts that were removed and replace with new belts,
if they show appreciable wear.
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