Toro 04022 Greensmaster Flex 21 Service Manual Download

Page: 38 / 114

Greensmaster Flex 18/21

Traction and Reel Drive System

Page 4 – 14

Traction Drum Assembly (Fig. 15)

1. Assemble hub/spindle assembly (Fig. 17):

A. Press one bearing into drum hub by applying
pressure to outer bearing race. Install bearing
spacer into drum hub and fill cavity between spacer
and drum hub with Mobil High Temperature
XHP–222 grease (or equivalent). Press second
bearing into drum hub by applying pressure to outer
bearing race. Make sure that spacer is centered in
hub.

B. Pack rear cavity of oil seals with Mobil High Tem-
perature XHP–222 grease (or equivalent). Fill hub
cavity between bearings and seal positions with Mo-
bil High Temperature XHP–222 grease (or equiva-
lent).

C. Press seals into hub so the seals are flush with
the hub surface. Lightly grease lip of both seals.

D. Lightly grease the drum spindle and slide spindle
into the hub. Slide seal ride spacer onto spindle and
insert spacer into oil seal. Secure drum spindle to
prevent it from turning and then secure spindle to the
hub with lock nut.

2. Position traction drums to hub/spindle assembly. Se-
cure each traction drum to hub/spindle with four (4) cap
screws and lock washers. Torque cap screws 100 in–lb
(11.3 N–m).

Traction Drum Installation (Fig. 15)

1. Position machine on a level surface. Make sure en-
gine is OFF. Remove spark plug wire from the spark
plug.

2. If removed, loosely install bearings (item 11) and
bearing flangettes (item 10) to machine frame. Make
sure that extended race of bearings is positioned to the
outside of the frame.

3. Pivot mower back and position traction drum assem-
bly under the mower. Lower mower onto traction drum.

4. Position drum spacers to sides of drum.

5. Insert bar stock or other suitable tool through spokes
of drum to keep drum from turning.

NOTE: The left side drum shaft has left hand threads
(Fig. 16).

6. Apply antiseize lubricant to drum shaft (item 8)
threads and install shafts through bearings, spacers and
into drum. After both shafts are installed, torque drum
shafts from 65 to 75 ft–lb (88 to 102 N–m).

7. Tighten the fasteners that secure the bearing flan-
gettes (item 10) to the machine frame. Tighten the bear-
ing set screw (item 25) to secure each bearing to the
drum shaft. Torque set screws from 40 to 50 in–lb (4.5
to 5.7 N–m).

NOTE: The left side drum pulley has left hand threads
(Fig. 16).

8. Apply antiseize lubricant to the external threads of
the drum shafts. Secure both drum pulleys (item 19) to
the drum shafts.

NOTE: The right side wheel shaft has left hand threads
(Fig. 16).

9. Apply Loctite #242 (or equivalent) to the threads of
the transport wheel shafts (item 17). Install wheel shafts
into drum drive shafts. Torque wheel shafts from 45 to
55 ft–lb (61 to 75 N–m).

10.Install traction belts and adjust belt tension (see
Traction Drive Belt Replacement in this section).

11. Install traction drive belt cover and secure with flange
nut. Torque flange nut 100 in–lb (11.3 N–m).

12.Install transport wheels if they were attached (see
Transport Wheels in the Service and Repairs section of
Chapter 6 – Chassis and Controls).

13.Connect spark plug wire to spark plug.