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c) Arrange the shaft assemblies to ensure that the gears are in

mesh and bearing cones are in the cups. Remove the
eyebolts before installing the housing cover.

d) Place cover gasket, Ref. #32 for Sizes 4407 - 4507 & Ref.

#12 for Size 4608, on housing base. Install the housing
dowels into the housing base for correct alignment.
Carefully lower the housing cover(using eyebolts as
recommended in Section II, Step 11), without the bearing
cups installed, onto the base. Tap the cover to ensure that
the housing cover is fully seated on the housing base.
Remove eye bolts and install cover fasteners and tighten to
torques specified in Table 14.

e) Apply film of oil to housing cover bores and bearing cups

& carefully install the bearing cups into the bores as
described in Step 2 above.

f) Install seal cages without seals and covers:

DOUBLE REDUCTION DRIVES —

Use the entire

shim-gasket kit with the .015" (0,38 mm) shim-gasket
against the housing. It is important that the .015" (0,38
mm) gasket be placed against the housing to prevent
leakage. Cross tighten fasteners to torques specified in
Table 14. Parts involved are as follows:

Size 4407 - 4507 — Low speed seal cage Ref. #11,
24 & 34; shaft cover Ref. #16, 26 & 36; high speed
seal cage Ref. #21, 31 & 39.

Size 4608 — Low speed seal cage Ref. #22, 23 & 24;
shaft cover Ref. #29, 30 & 31; high speed seal cage
Ref. #38, 39 & 40.

SINGLE REDUCTION DRIVES —

Install end cover, Ref.

#16, 26 & 36, with one .015" (0,38 mm) shim-gasket on
unused bore. For the other seal cages follow instructions
from above as described for double reduction drives.

BEARING ADJUSTMENT

a) For drives equipped with TA taper bushing, turn drive over

onto the input housing and carefully thread bushing nut
onto hollow shaft threads. Rotate the shaft to seat the cone
assemblies in the bearing cups. Set up a dial indicator,
Figure 22. Rotate and oscillate shaft with axial force applied
in both directions to obtain the shaft axial float
measurement. If no float is measured, remove bushing nut
and seal cage & add shim-gaskets until float is measurable.
Proceed to Step 6(c).

b) For drives without the TA Taper bushing, insert the hollow

shaft thrust plate and secure with the retaining ring as
illustrated in Section I, Figure 4. Thread a bolt into the thrust
plate. Set up a dial indicator on the input housing face with
the indicator probe on the end of the hollow shaft. DO NOT
indicate from the thrust plate or fastener head. Rotate and
oscillate shaft with axial force applied in both directions to
obtain the axial float measurement. (Upward force can be
applied by prying upward on the head of the thrust plate
bolt). If no float is measured, remove seal cage and add
shim-gaskets between the housing flanges until float is
measurable.

c) If the axial float from 6(a) or (b) is greater than .010" (0,25

mm), subtract sufficient shims to obtain .001" to .010"
(0,03 mm to 0,25 mm) float. Refer to Table 16 for shim
thickness. Take into account the compressibility of
shim-gaskets from Table 17. Reassemble and repeat Step
6(a) or (b). When float is within .001" to .010" (0,03 mm to
0,25 mm), proceed to Step 6(d).

d) Refer to Table 15 and note the preload specified for

bearings 4A1 and 4A2. Add to the upper and lower limits
shown, the axial movement obtained in Step 6(c). This
will indicate the thickness of shims to be removed to
obtain the specified preload. For example, if the preload
in Table 15 is .005 to .007 inches (0,13 mm to 0,18
mm) and the axial movement was .007 inches (0,18
mm), removal of shims with a total thickness of .012 to
.014 inches (0,31 mm to 0,36 mm) will produce the
desired preload. Table 16 provides shim thicknesses for
each shim pack to assist in obtaining the desired results.
Take into account the compressibility of shim-gaskets
from Table 17.

e) Remove seal cage Ref. #11 for Sizes 4407 - 4507; Ref.

#22 for Size 4608 and remove shim-gasket(s) as
determined in Step 6(d). Reattach the seal cage and
tighten fasteners to torque specified in Table 14.

The Falk Corporation, P.O. Box 492, Zip 53201-0492

378-102

3001 W. Canal St., Zip 53208-4200, Milwaukee, WI USA Telephone : 414-342-3131

August 2004

Fax: 414-937-4359 e-mail: [email protected] web: www.falkcorp.com

Supersedes 6-92

a good name in industry

Quadrive Shaft Mounted Drives

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