Groundsmaster 4300--D Page 6 -- 23 Chassis
Removal (Fig. 20)
1. Park machine on a level s urface, lower cutting
decks, stop engine, engage parking brake and remove
key from the ignition switch.
2. Remove cutting deck from front lift arm to be re-
moved(seeCuttingDeckCarrierFrameRemovalinthe
Service and Repairs section of Chapter 7 -- Cutting
Decks).
3. Disconnect lift cylinder from lift arm (Fig. 21):
A. Remove one (1) retaining ringand thrust washer
from the cylinder pin that secures lift cylinder to lift
arm.
B. Pull cylinder pin from the lift cylinder and lift arm.
Locate and retrieve second thrust washer.
C. Pivot lift cylinder rod end away from lift arm.
4. Remove fastenersthatsecure tipperbracket(item 7
or 8) to machine. Remove tipper bracket.
5. Slide front lift arm from lift arm pivot shaft.
6. Inspect flange bushings in lift arm for wear or dam-
age. If necessary, replace bushings:
A. Use bushing removal tool to extract bushings
from the lift arm. Take care to not damage the bore.
B. Clean the insideof the boreto remove anydirtor
foreign material.
C. Applygreasetotheinsideandoutside ofthenew
bushings.
D. Use an arborpress to install the bushingsinto lift
arm.Liftarmbushings shouldbepresseduntilbush-
ing flange is against lift arm bore.
E. After bushing installation, make sure that lift arm
slides easily onto pivot shaft. If binding is noted, lo-
cate and correct source of binding.
7. If necessary, remove cap screw that secures pivot
shaft (item 16) in lift arm. Remove pivot shaft from lift
arm.
8. Ifnecessary,removerollpin(item3)andliftarmpivot
shaft (item 14) from frame. Discard roll pin.
Installation (Fig. 20)
1. If lift arm pivot shaft (item 14) was removed from
frame, apply antiseize lubricant to pivot shaft surface
andinsertshaftintoframe.Alignholesinframeandpivot
shaft. Secure pivot shaft with new roll pin.
2. If pivot shaft (item16) was removed from lift arm, in-
sert pivot shaft in lift arm and secure with cap screw
(item 19).
3. Slide front lift arm onto pivot shaft.
4. Secure front lift arm to machine:
A. ApplyPermatexBlueGelThreadlocker(orequiv-
alent) to threads of screws (items 9, 12 and 18).
B. Position tipper bracket to lift arm and frame
bracket.
C. Installscrews,flatwashers(items11and13)and
flange nut (item 6) to tipper bracket, pivot shaft and
frame bracket.
D. Torque1/2” fasteners(items9and18)from75to
95ft--lb(102to 128 N--m).Then,torque5/8”fasten-
ers(item18)from135to165ft--lb(183to223N--m).
5. Connect lift cylinder to lift arm (Fig. 21):
A. Align liftcylinder rodend toliftarmmountinghole
B. Slide cylinder pin with retaining ring and thrust
washer through the lift cylinder and lift arm.
C. Install second thrust washer on pin and secure
with second retaining r ing.
6. Mountcutting decktoliftarm (seeCutting DeckCar-
rier Frame Installation in the Service and Repairs sec-
tion of Chapter 7 -- Cutting Decks).
7. Lubricate lift arm and lift cylinder grease fittings.
1. Lift arm (#1 shown)
2. Lift cylinder
3. Retaining ring
4. Thrust washer
5. Cylinder pin
Figure 21
4
3
1
2
5
3
4
Chassis
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