caution - Toro
caution - Toro
caution - Toro
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CAUTION<br />
When changing attachments, tires or performing<br />
other service, use correct jacks and supports.<br />
Make sure machine is parked on a solid,<br />
level surface such as a concrete floor. Prior to<br />
raising machine, remove any attachments that<br />
may interfere with the safe and proper raising of<br />
the machine. Always chock or block wheels. Use<br />
jack stands to support the raised machine. If the<br />
machine is not properly supported by jack<br />
stands, the machine may move or fall, which<br />
may result in personal injury.<br />
3. Chock rear wheels and jack up front of machine.<br />
Support machine on jack stands. Remove front wheel<br />
next to lift arm that is being removed.<br />
4. Remove flange head screw and lock nut that secure<br />
lift cylinder pin to lift arm. Remove pin and separate lift<br />
cylinder from lift arm.<br />
5. Remove lock nut that secures lift arm pin. Support lift<br />
arm and slide pin from frame and lift arm. Remove lift<br />
armfromframe.<br />
E. Thoroughly clean tapered surfaces of stud and<br />
mounting boss of support hub. Secure support hub<br />
(position slotted hole in hub toward rear of deck) to<br />
tapered stud with flat washer and flange nut. Tighten<br />
flange nut from 155 to 185 ft -lb (211 to 251 N -m).<br />
2. Position lift arm to frame and insert lift arm pin. Engage<br />
roll pin into frame slots and install lock nut on pin.<br />
Torque lock nut from 60 to 70 ft -lb (81 to 94 N -m).<br />
3. Align lift cylinder with lift arm. Slide lift cylinder pin<br />
through lift arm and cylinder end. Secure pin with flange<br />
head screw and lock nut.<br />
4. Install front wheel assembly. Lower machine to the<br />
ground.<br />
5. Install cutting deck (see Cutting Deck Installation in<br />
Chapter 8 -- Cutting Deck).<br />
6. Lubricate lift arm grease fittings.<br />
7. After assembly is completed, raise and lower the cutting<br />
deck to verify that hydraulic hoses and fittings do not<br />
contact anything.<br />
8. Check height--of--cut and deck pitch adjustment.<br />
6. As needed, disassemble lift arm:<br />
A. Remove height--of--cut chain and damper assembly.<br />
B. Press flange bearings from lift arm.<br />
0.750”<br />
(19.1 mm)<br />
2<br />
C. Remove flange nut, flat washer and support hub<br />
from tapered stud. Remove tapered stud with spherical<br />
bearing from lift arm after removing retaining ring<br />
from lift arm. Remove flange nut and spherical bearing<br />
from stud.<br />
Figure 3<br />
1. Lift arm 2. U -bolt threads<br />
1<br />
Installation (Fig. 2)<br />
1. If removed, install components to lift arm.<br />
A. Assemble height--of--cut chain u--bolt so that<br />
threaded portion of u--bolt extends 0.750” (19.1 mm)<br />
above mounting plate on lift arm (Fig. 3).<br />
2<br />
4<br />
Chassis<br />
B. If rod ends were removed from damper, apply<br />
Loctite #242 to threads and install on damper. Install<br />
damper assembly to lift arm with damper rod end toward<br />
deck (Fig. 4).<br />
C. Press flange bearings into lift arm.<br />
D. Install spherical bearing on tapered stud and secure<br />
with flange nut. Torque flange nut from 30 to 40<br />
ft -lb (41 to 54 N -m). Install stud with spherical bearing<br />
into lift arm and secure with retaining ring.<br />
3<br />
1. Lift arm<br />
2. Deck castor arm<br />
Figure 4<br />
1<br />
3. Support hub<br />
4. Damper<br />
Groundsmaster 4100--D Page 7 - 5 Chassis