Owners Manual • Falk Quadrive Shaft Mounted Drives Model A
(Page 12 of 52)
Sizes 5107-5315
378-200
(PN-2128394)
Rexnord
January 2019
3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 04-17
Telephone:
414-342-3131
Fax:
414-937-4359
www.rexnord.com
DRIVE DISASSEMBLY
—
(Refer to Parts Drawing
Figure 19)
Prior to initiating any disassembly or repair, clean
accumulated dirt and grime from the surface of the drive
housing Clean the exposed portion of the input and
output shafts with a solvent and a non-abrasive cloth If
only the seals are being replaced, proceed to Step 5 If
the drive will be disassembled for inspection or repair,
remove input side seal covers, Ref #13 & 15, as illustrated
in Figure 16, then skip to Step 9
CAUTION:
Do not damage shaft. New seals will leak if seal
contacting surface is marred. Do not use abrasive material
on shaft seal contacting surface.
5. SEAL REMOVAL —
The input side low-speed and
high-speed shaft seals, Ref #19 & 20, respectively,
can be replaced without removing drive from the
driven shaft Remove input side seal covers, Ref #13 &
15, as illustrated in Figure 16
a Remove all sharp edges from shaft extension Use
a sharp center punch to lightly punch the seal
case as a guide for drill bit NOTE: Seals are not
axially restrained DO NOT drive seal into bore too
deep, or disassembly of drive may be required to
extract seal
b Wrap several turns of tape around the drill bit
approximately 250” (6 mm) from the drill point to
prevent the drill bit from entering too deeply into
the housing and damaging the bearing Grease
or magnetize the drill bit to help retain the chips
Drill two 125” (3 mm) diameter holes in the seal
case 180° apart Control the angle of the drill as
illustrated in Figure 17 to prevent damage to the
shaft
c Insert two #10- 750” (M5 x 20) sheet metal screws
into the seal case leaving 5” (13 mm) of the screw
protruding above the seal face DO NOT drive the
screw more than 25” (6 mm) beyond seal face or
bearing damage may occur Use a claw type pry
bar under the screw head as shown in Figure 17 to
lift seal out Remove all metal chips Use a magnet
to remove the metal chips that fall into the bore
Flush the drive to remove chips from the bearing
Remove Permatex from the housing bore
6
SEAL SURFACE CONDITION —
Carefully inspect
polished surface of shaft where the seal makes
contact If the seal surface shows any sign of a nick,
scratch, spiral swirl or groove, the shaft should be
replaced or refurbished to prevent leakage of the
lubricant (In many instances, the seal surface can be
restored by use of a thin wall wear sleeve Check with
your local seal supplier and follow the manufacturer’s
instructions for installing the wear sleeve )
REF # 13
REF # 15
WRONG WAY
RIGHT WAY
Figure 16
Figure 17
