Honda RM752A, Operator'S Manual

Page: 23 / 40

DEALER MAINTENANCE
Be familiar with all safety practices on pages
4
and
5.
Make certain movement of cutter compo-
nents has stopped before opening blade
access cover.
Always wear relatively tlght and belted
clothing t o avoid entanglement
In moving
parts. Wear sturdy, rough-soled work shoes
and
equlpment for eyes, hands,
hearing and head.
Operate
PTO
at.
2,000
rpm maximum.
Turn tractor engine off, remove key,
mower t o ground before performing any
or maintenance.
Block mower securely before working under-
neath.
Keep ail persons away from operator control
area whlle performing adjustments, service
or maintenance.
Make sure tractor PTO spring-activated
locking collar slides freely and is seated
firmly
in
mower driveline spline groove.
SPINDLE REPAIR
Blade Spindle Removal
Remove blade from spindle.
Remove belt from pulleys.
Remove split taper bushing (located on top of
pulley) by removing the
two
bolts
and insetting them
into the threaded holes in bushing flange. Tighten
bolts alternately to remove split taper bushing.
Remove key and pulley.
Remove four bolts attaching spindle
to
mower frame
and remove spindle.
(1
Spindle Repair Tips
As
a reference point, the grease fitting is in the top
portion of spindle housing.
To minimize wear, bearing cups, cones and sleeves
are press fit to shaft and will require a press
or
similar device for
When disassembling, support housing casting to
prevent damage.
Remove bearing cups by placing a punch in housing
slots
and driving cup out. Alternate punch positions
from side
to
side. Use care
to
prevent housing
damage.
Permatex Aviation Form-A-Gasket@ or equiva-
lent is recommended as a sealant for spindle repair.
Blade Spindle Disassembly
(figure
Top and bottom washers
(3)
and sleeve
(2)
are tack
welded to shaft. You must grind
or
break
off
before pressing shaft and crossbar (9) out of
housing.
Support spindle in a press and push shaft and
crossbar
(9)
down through housing
(6).
Remove seals from housings.
Remove bearing cups from housing as described in
Tips section above.
Blade Spindle Assembly
(figure
Bearing cups and cones are designed to work
together. is important to position them so bearing
cone taper mates with bearing cup taper.
Lubricate new cups (7) with a light oil. Place them in
spindle housing (6)
so
they will mate with cones (5).
Seat cups
(7)
against machined shoulder of housing
with a press or by placing a large soft drift on the
flat lip and driving them into housing.
Place bottom bearing cone
(5)
into housing against
bearing cup
(7).
Pennatex Aviation Form-A-Gasket is a registered trademark
of the Permatex Corporation.
21