Mach III Clutch 118FM & 118FM-ULOW User Manual
Page 5
7/10/2013
CLUTCH_SENSIFLEX_FM_MANUAL
Page 5 of 5
2. Bearing Inspection & Replacement
Check bearings for external damage (missing seal, etc.). Make sure the bearings rotate freely and
smoothly by hand. If bearing replacement is necessary, remove retainer ring (at the bearing OD).
The bearing should be removed from the component using an arbor press. New bearing should be
pressed back into the cylinder and outer retainer ring must next be replaced.
If new bearing was not installed, gently scrape away any Loctite® residue from the inside diameter
of the bearing in the air cylinder and assure that surface is clean.
D. REASSEMBLY
1.
Reconnect the air cylinder and piston/disc assembly.
2.
Apply a thin coat of grease (such as Molykote® G-N Metal Assembly Paste) to the hex drive
surface of the drive hub.
3.
If reassembling the 38, 58 or 78FM:
Place the wave spring over the drive hub where it rests on top of the hex portion (use new
spring if installing a repair kit). Aligning the hex of the drive hub and milled hex in the drive
disc, lower the cylinder/piston/disc subassembly over the drive hub. Skip to step 5.
4.
If reassembling the 98FM or 118FM:
Place the cylinder/piston/disc subassembly with the friction disc facing upward and replace
the the six (6) coil springs in the milled pockets in the drive disc (use new springs if installing a
repair kit). The remainder of the clutch assembly, including the drive hub should be lifted,
inverted and inserted in through the center of the cylinder/piston subassembly. Align the hex
of the drive hub and milled hex in the drive disc and lift the subassembly up to meet the
mating surface of the sleeve input member. Hold clutch “halves” together and invert so that
the cylinder is facing upward.
5.
Place the adjustment nut on the threads and tighten to a point where a 0.010 - 0.020 gap
remains between friction lining and sleeve input member. It is recommended that a 0.010
feeler gauge be used. Sleeve input member should turn freely after reassembly. If you can
feel contact between the friction and drive surface when rotating, loosen adjustment nut just
enough to provide clearance. Tighten set screw in adjustment nut snuggly when proper
clearance has been achieved.
6.
See “Installation” section on Page 2 of these instructions for the proper procedure for re-
installing the clutch.
Technical assistance is available by contacting Mach III Clutch, Inc.
Mach III Product Warranty
Mach III Clutch, Inc.
101 Cummings Drive ● Walton, KY 41094
Toll free 866.291.0849 ● International 859.291.0849 ● Fax 859.655.8362