Toro Groundsmaster 4500-D, Service Manual

Page: 221 / 278

Groundsmaster 4500--D/4700--D Page 7 -- 7 Chassis
Removal
1. Park machine on a level surface, lower cutting units,
stop engine, engage parking brake, and remove key
from the ignition switch.
2. Remove cutting deck from lift arm (see Cutting Unit
Operator’s Manual).
3. Remove lift cylinder pin that secures lift cylinder to lift
arm.
4. Loosen and remove lock nut from pivot pin.
5. Support lift arm and pull lift arm pivot pin from lift arm
and frame. Locate and remove thrust washer from rear
of lift arm during pivot pin removal.
6. Remove lift arm from machine.
7. Clean lift arm and pivot pin. Inspect lift arm flange
bushings and pivot pin for damage or wear.
Installation
1. Position lift arm to frame (Fig. 6). Fit thrust washer
between rear of lift arm and frame. Slide pivot pin into
frame and lift arm. Align roll pin in pivot pin with slot in
frame flange.
2. Install and tighten lock nut to secure lift arm pivot pin.
3. Install lift cylinder to lift arm with cylinder pin. Secure
cylinder pin to lift arm with flange head screw and flange
nut.
NOTE: Install thrust washer on deck pivot shaft before
installing cutting deck on pivot shaft.
4. Position and install cutting deck to lift arm (see Cut-
ting Unit Operator’s Manual).
NOTE: The lift arms for cutting decks #2 and #3 are
fitted with a lift arm rotation stop block (27). This stop is
to keep the deck stable while raised. To adjust rotation
stop, loosen set screws and fully raise cutting deck to
position the stop. Apply medium strength thread--lock-
ing compound (e.g. Loctite blue) to set screws and re-
tighten set screws to secure stop. The rotation stop
should contact the lift arm across the full width of the
stop.
5. Lubricate lift arm and lift cylinder grease fittings after
assembly is complete (see Traction Unit Operator’s
Manual).
6. After assembly, raise and lower the cutting deck to
verify that hydraulic hoses and fittings do not contact
anything.
Figure 7
#4 Deck #1 Deck #5 Deck
#7 Deck
(GM4700)
#6 Deck
(GM4700)
#3
Deck
#2
Deck
CUTTING DECK LOCATIONS
Chassis