4.
P.T.O. Drive Shaft Removal in Service and Repairs sec-
tion of Chapter 9 − P.T.O. System).
Disconnect P.T.O. drive shaft from gearbox (see
9. Connect P.T.O. drive shaft to gearbox (see P.T.O.
Drive Shaft Installation in Service and Repairs section
of Chapter 9 − P.T.O. System).
5.
ers (item 16) that secure gearbox assembly to gearbox
brackets.
Remove four (4) cap screws (item 17) and lock wash-
10.Install drive belt and belt covers to cutting deck (see
Cutting Unit Operator’s Manual).
11.
Torque plug in gearbox to 175 in−lb (19.8 N−m). Fill
6.
bracket (item 12) to deck mounting plate. Remove
bracket from deck.
Remove fasteners that secure left side gearbox
gearbox with lubricant (see Cutting Unit Operator’s
Manual). Install dipstick in gearbox and torque to 175 in−
lb (19.8 N−m).
7.
Remove gearbox assembly with drive pulley at-
tached from deck. Drain lubricant from gearbox.
2
8.
Remove two (2) set screws that secure taper lock
bushing to drive pulley on gearbox shaft.
1
9.
Thread one of the removed set screws into threaded
1
hole of bushing (Fig. 10). Tighten set screw to loosen
bushing from pulley hub.
10.Slide
bushing and pulley from gearbox shaft. Locate
and retrieve woodruff key.
Figure 10
11.
caps in gearbox (Fig. 11).
If necessary, remove and replace oil seals and oil
1.
2.
Set screw installation position
Set screw removal position
NOTE: If internal gearbox wear or damage occurs,
gearbox replacement is necessary. Internal gearbox
components are not available.
175
in−lb
175
(19.8
in−lb
N−m)
1
(19.8 N−m)
Installation (Fig. 9)
1.
If oil seals or seal caps were removed, use a press
2
6
to install seals or caps so they are flush with the gearbox
housing. With seals installed, rolling torque for gearbox
input shaft should be 5 to 10 in−lb (.56 to 1.13 N−m).
2.
Clean gearbox output shaft, pulley ID and taper lock
bushing thoroughly.
3
3.
Position woodruff key, pulley and then taper lock
bushing to gearbox output shaft. Slide bushing to shoul-
der on shaft. Align threaded holes of pulley with non−
threaded holes of bushing.
4
4.
Lightly oil threads of set screws and install screws
into threads of pulley (Fig. 10). Alternately and evenly
tighten set screws to a torque of 175 in−lb (19.8 N−m).
5
5.
Fill allen recess in set screws and bushing threads
with grease to prevent dirt from packing into crevices.
Figure 11
6.
Position gearbox assembly with drive pulley at-
tached to deck.
1.
2.
3.
Oil cap
Dipstick
Oil cap
4.
5.
6.
Gearbox
Oil seal
Plug
7.
Position and secure left side gearbox bracket (item
to deck mounting plate.
12)
8.
Secure gearbox assembly to gearbox brackets with
four (4) cap screws (item 17) and lock washers (item 16).
Groundsmaster 3280−D/3320 Page 10 − 13
Cutting Units
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