Engine Coupling Service; Pto Drive Pulley And Bearing Service - Toro Groundsmaster 455-D Service Manual

Engine Coupling Service

1. Remove three (3) flange head screws (Fig. 6, Item 6)
securing driveshaft (Item 13) to rubber coupling
(Item 8). Make sure you account for spacers (Item 12).
2. Remove three (3) flange head screws (Item 6) secur­
ing rubber coupling to engine. Be sure you account for
flat washers (Item 4).
3. Push driveshaft into splined hub (Item 11) and remove
coupling assembly.
4. Inspect rubber couplings, driveshaft and splined hub
and replace as necessary.

PTO Drive Pulley and Bearing Service

NOTE: A special tool (TOR4050) is required remove and
install the bearing locknut (Fig. 6, Item 1).
1. Remove engine coupling assembly (see Engine Cou­
pling Service).
2. Disconnect hydraulic pump assembly from bearing
housing (Item 18). NOTE: To prevent contamination of
hydraulic system do not disconnect hydraulic lines from
pump assembly.
3. Loosen belt tension and remove PTO belts (see PTO
Belt Replacement).
4. Remove four (4) flange screws (Item 2) securing
bearing housing (Item 18) to main adapter plate
(Item 19), then remove bearing housing and PTO drive
pulley assembly.
5. Remove bearing locknut (Item 1) and lockwasher
(Item 20.)
6. Use a press to remove pulley (Item 15).
7. Use a suitable puller to remove bearings (Item 16).
Remove bearing spacer (Item 17).
8. Inspect bearings and pulley. Replace parts if worn or
damaged.
9. Use a press to install one bearing (Item 16) into
bearing housing (Item 18). When installing bearing,
press on OUTER race of bearing
®
Groundsmaster 455-D
5. Install grease seal (Item 10) so steel shell is towards
spline. secure seal in place with retaining ring (Item 9).
NOTE: Seal (Item 10) is retained with Loctite on units
with Serial Number 20001 - 29999.
6. When assembling parts, index driveshaft and splined
hub to get clearance for hex flange screws that secure
driveshaft to rubber coupling.
7. Install new fasteners (Item 6) and torque to 45 ft-lb.
8. Lubricate slip joint with No. 2 General Purpose Lith ­
ium Base Grease at grease fitting on coupling.
10. Install bearing spacer (Item 17) and press other
bearing (Item 16) into bearing housing until bearings
contact the spacer. When installing bearing, press on
OUTER race of bearing.
11. Make sure plug (Item 14) is installed in pulley
(Item 15).
12. Use a press to push the bearing housing and bear ­
ings onto the pulley (Item 15). Press on INNER race of
bearing.
13. Install lockwasher (Item 2) and bearing locknut
(Item 1) to pulley shaft. Use special tool (TOR4050) and
a torque wrench to tighten locknut. Tighten to a torque
of 150 - 200 ft-lb.
14. Install bearing housing and pulley assembly to main
adapter plate (Item 19) and secure with four (4) flange
screws (Item 2).
15. Install belts on PTO drive pulley.
16. Apply Never-Seez or equivalent to spline of hydrau­
lic pump shaft, then install hydraulic pump assembly.
17. Install engine coupling assembly (see Engine Cou­
pling Service).
18. Add No. 2 General Purpose Lithium Base Grease at
grease fitting on bearing housing (Fig. 6, Item 18).
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