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REINCO TM7-30 SAFETY OPERATION PARTS AND SERVICE MANUAL
DRIVE COUPLING ALIGNMENT
SERIES X02 COUPLINGS
When aligning the coupling, it is important that the centerline
of the driven shaft be true to the centerline of the engine shaft.
Wear on the flex element due to the axial and radial
misalignments will be avoided with proper alignment.
COUPLING SHOULD BE ALIGNED WITHIN .010
PARALLEL AND 5° ANGULAR.
1
To check PARALLEL drive coupling alignment, use a
notched straight edge (notch should be sufficient to
clear the center member) and a feeler gauge. Place the
straight edge across the two coupling flanges and
measure the maximum offset at various points around
the periphery of the coupling without rotating the
coupling. If the maximum offset exceeds .010", realign
the shafts.
2
To check ANGULAR drive coupling alignment, a micrometer or caliper must be used. Measure from the outside of one
flange to the outside of the other at intervals around the periphery of the coupling. Determine the maximum and
minimum dimensions without rotating the coupling. The difference between the maximum and minimum must not
exceed 5°. If correction is required be sure to recheck the parallel alignment.
3
In the field, the angular measurements may be approximated with a tape or ruler. Use opposite reference positions on
the driven shaft flange, measuring to respective locations on the perimeter of the coupling flange (engine side). The
variations should be limited to 1/32". However, this method should be rechecked as soon as possible as indicated
above.
ALIGNMENT OR REPLACEMENT
It should not be necessary to replace any parts on the drive coupling assembly, provided that misalignment is discovered at the
onset. The following procedure covers the method to replace an entire coupling assembly, and may also be used as a guide for
alignment also.
1
Inspect the coupling assembly for damage. Secure replacements as required.
2
Remove any protective coatings or lubricants from bores, mating surfaces and fasteners. De-burr any marred surfaces
and edges.
3
Slide one coupling flange onto each shaft. The keys must fit snugly. Should the fit be loose, find out why and correct
before proceeding further. Nest the center member (flexible element) with metal casing within one flange. Draw the two
flanges together with some clearance between the element and flanges (approx. 1/32" total or 1/64" per side). Center
the flanges between the two shafts. Using a thread locking resin, then torque the set screws on the flanges securely.
Assemble center member bolts and nuts, torque to insure bushings are snug into flanges.
4
Check parallel and angular alignment as described above. Should the alignment be within specifications, proceed to
step 6.
5
Loosen bearing and/or engine bolts, as required, to shim to correct the alignment. Torque the bearing and engine
fasteners, then repeat step 4.
6
Check to insure that all fasteners are securely torqued.
MANUAL 33000900
© REINCO INC. 1998
REVISED 3/98
