5
1.
Blade spindle
2.
Sleeve
3. 1-3/4
x
Flat washer
4.
Seal
5.
Bearing cone
6.
Spindle housing with cups
7.
Bearing cup
8.
Grease fitting
9.
Spindle shaft and crossbar
10.
Blade pin retainer washer
11.
QD
Blade pin
12. 1/2
x
Nylok
13.
Key
14.
Blade
Flgure
16.
Blade Spindle Assembly
IMPORTANT NOTICE
Improper positioning
of
seals can cause seal
fallure.
Proper seal installation is important. An improperly
installed seal will leak and could cause bearing
failure.
Coat area
of
housing where seals seat, lightly with
Permatex.
Pull the rubber portion
of
seal back and locate
spring.
Apply a thin coat of lubricant
to
bottom seal and
install with spring up toward center of housing.
Place seal squarely on housing. Select a piece of
pipe or tubing with an outside diameter that will set
on
outside edge of seal.
A
tube that is too small will
bow seal cage.
Carefully press seal into housing, preventing
distortion
to
metal seal cage. Seal should seat firmly
and squarely against machined shoulder in housing.
Make sure seal lip
did
not
roll
under. Distortion
to
seal cage
or
damage to seal lip will cause seal to
leak. Damaged seals must be replaced.
Place bottom washer
(3)
on shaft and crossbar
(9).
Place housing assembly with bottom seal
bottom cone
(5)
and cup
(7)
installed over shaft and
crossbar
(9).
Carefully guide seal over shaft and
press shaft into housing.
Fill housing cavity with a medium grade grease.
Place
top
bearing cone
( 5 )
and sleeve
(2)
on shaft.
Press sleeve and bearing onto shaft until all bearing
free play is removed and there is a slight drag
(similar
to
adjusting the front wheel bearings on an
automobile). Check by spinning spindle.
It
should
turn freely.
IMPORTANT NOTICE
Bearing adjustment
Is
set by pressing sleeve
agalnst bearing until proper adjustment
is
attained. Adjustment is maintained
by tack
sleeve
(2)
and washers
(3)
to spindle
shaft.
Be careful not
to
over-tighten bearings. Proper
bearing adjustment is essential
to
good bearing life.
Should you over-tighten bearings, hold spindle
housing and rap spindle shaft with a lead hammer
to
loosen bearings. Adjust to obtain proper setting.
Place a damp rag over bearings
to
protect them.
Tack weld sleeve
to
shaft in
two
spots
apart.
Also tack weld top and bottom washers in
two
spots
apart.
IMPORTANT NOTICE
When welding bottom washer, connect welder
ground
to crossbar. When
top
washer and sleeve, connect welder to top of
shaft. Failure to connect welder ground
properly can
to become welded
to shaft.
Install top seal with spring up away from center of
housing. Top seal should be flush with,
to
1/16
above, housing.
F-7756
(1
0-89)
22
Summary of Contents for RM752A
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