User guide

7/9/2013 CLUTCH_ENDSHAFT_SPRING_HD_MANUAL Page 2 of 4
I. New Clutch Torque
New clutch torque is approximately 40% less than rated design torque until the friction
and drive discs are worn in (lapped, burnished). The length of time for wear-in to occur
depends upon the application.
II. Installing a Sprocket or Pulley
Mach III units are typically shipped from the factory with the required sprocket or pulley
preinstalled. This section pertains only to those who need to install or replace a pulley or
sprocket in the field. Please use the links on page one of this document to obtain the
detail sheet for your unit. This sheet will include the pilot diameter and other dimensions
needed to machine the sprocket or pulley.
Bore the sprocket or pulley for clearance (slide fit) over pilot and drill standard clearance
holes for the number and type of screws on corresponding bolt circle. The cap screws
used to attach the sprocket or pulley should not be longer than the sum of the depth of
the threaded hole plus the thickness of the sprocket or pulley. Otherwise, the cap screws
may bottom out. Tighten all screws to uniform torque based on screw size and use
proper Loctite
®
(or equivalent) compound to assure a permanent mount.
III. Clutch Installation
A. SHAFT PREPARATION & MOUNTING
Mach III Clutch products are bored to fit a precision plug gauge for the specified bore size and
should slide fit the mating shaft. Make certain that the shaft is free of burrs or nicks. It may be
necessary to file or sand the shaft to assure a slide fit. Never hammer the clutch onto the
shaft. Hammering on the clutch may cause evident damage or subtle injury that will shorten the
wear life of the unit, and will void the warranty.
(1) Apply the anti-seize (E-Z Break
®
) lubricant from the packet provided, or equivalent, to
the shaft.
(2) Insert key (customer supplied) onto the shaft.
(3) Slide clutch over key on the shaft, align the sprocket or pulley.
(4) Tighten set screws to secure the clutch to the shaft.
B. AIR LINE CONNECTION
Refer to the dimensional spec sheet for NPT size to obtain correct fitting. Install fitting using a
thread sealing compound to prevent air leakage. Connect a flexible air line to the fitting. Do not
use rigid piping. Air supply should be both filtered and regulated. Contamination in the air
supply may damage the clutch.
C. FINAL INSPECTION & TESTING
Check alignment of the sprocket or pulley. Cycle the clutch with the machine off to check for air
leaks and to ensure proper engagement and release. After a short run, check set screws and
alignment.
IV. Clutch Operation
The maximum operating pressure should not exceed 90 PSI. Operation at pressures
greater than that required for proper function will decrease the life of the air seal.
Special Note Regarding Friction Disc Contamination:
The friction material used in this product will absorb oil, water, chemicals and other
contaminants. Depending on the type of contamination, clutch may either seize up
entirely or lose torque capacity. If friction discs become contaminated, they should be
replaced. See repair kit ordering information below.