Groundsmaster 4300--D Cutting DecksPage 7 -- 11
3. Usingan arborpress,pushthebearingcups intothe
top and bottom of the spindle housing. The top bearing
cup must contact the outer bearing spacer previously
installed, and the bottom bearing cup must contact the
large snap ring. Make sure that the assembly is correct
bysupportingthefirstbearingcupandpressingthesec-
ond cup against it (Fig 7).
4. Pack the bearing cones with grease. Apply a film of
grease on lips of oil seals.
5. Install lower bearing cone and greased oil seal into
bottom ofspindle housing.Note: The bottom seal must
havethelipfacingout(down) (Fig.8).Thissealinstalla-
tion allows grease to purge from the spindle during the
lubrication process.
IMPORTANT: If bearings are being replaced, make
sure to use the spacer ring that is included with the
new bearing set (Fig. 6).
6. Slide spacer ring and inner bearing spacer into
spindle housing, then install upper bearing cone and
greased oil seal into top of housing. Note: The upper
seal must have the lip facing out (up) (Fig. 8).
7. Inspect the spindle shaft and shaft spacer to make
suretherearenoburrsornicksthatcouldpossiblydam-
age the oil seals. Lubricate the shaft and spacer with
grease.
8. Install spindle shaft spacer onto shaft. Place thin
sleeve or tape on spindle shaft splines to prevent seal
damage during shaft installation.
9. Carefully slide spindle shaft with spacer up through
spindlehousing.Thebottomoilseal andspindlespacer
should fit together when the s pindle is fully installed.
10.Thread spindle nut onto shaft and tighten nut from
130 to 160 ft--lb (177 to 216 N--m).
IMPORTANT: Pneumatic grease guns can produce
highpressure insidespindle housing thatcan dam-
age spindle seals. Pneumatic grease guns, there-
fore, are not recommended to be used for greasing
of spindle housings.
11.Attachahandpumpgreaseguntooneofthegrease
fittings on housing and fill housing cavity with grease.
12.Rotate spindle shaftto make sure thatit turns freely.
13.Install blade spindle assembly to cutting deck (see
Blade Spindle Installation in this section).
1. Bearing cups
2. Large snap ring
3. Large spacer
4. Arbor press
5. Support
6. Arbor press base
Figure 7
PRESS
2
1
3
4
6
5
1. Bottom seal installation 2. Upper seal installation
Figure 8
1
2
Cutting Decks
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