Toro 4100-D service manual Cal bearing from lift arm after removing retaining ring

CAUTION

When changing attachments, tires or perform- ing other service, use correct jacks and sup- ports. Make sure machine is parked on a solid, level surface such as a concrete floor. Prior to raising machine, remove any attachments that may interfere with the safe and proper raising of the machine. Always chock or block wheels. Use jack stands to support the raised machine. If the machine is not properly supported by jack stands, the machine may move or fall, which may result in personal injury.

3.Chock rear wheels and jack up front of machine. Support machine on jack stands. Remove front wheel next to lift arm that is being removed.

4.Remove flange head screw and lock nut that secure lift cylinder pin to lift arm. Remove pin and separate lift cylinder from lift arm.

5.Remove lock nut that secures lift arm pin. Support lift arm and slide pin from frame and lift arm. Remove lift arm from frame.

E. Thoroughly clean tapered surfaces of stud and mounting boss of support hub. Secure support hub (position slotted hole in hub toward rear of deck) to tapered stud with flat washer and flange nut. Tighten flange nut from 155 to 185 ft--lb (211 to 251 N--m).

2.Position lift arm to frame and insert lift arm pin. En- gage roll pin into frame slots and install lock nut on pin. Torque lock nut from 60 to 70 ft--lb (81 to 94 N--m).

3.Align lift cylinder with lift arm. Slide lift cylinder pin through lift arm and cylinder end. Secure pin with flange head screw and lock nut.

4.Install front wheel assembly. Lower machine to the ground.

5.Install cutting deck (see Cutting Deck Installation in Chapter 8 -- Cutting Deck).

6.Lubricate lift arm grease fittings.

7.After assembly is completed, raise and lower the cut- ting deck to verify that hydraulic hoses and fittings do not contact anything.

8.Check height--of--cut and deck pitch adjustment.

6. As needed, disassemble lift arm:

A. Remove height--of--cut chain and damper as-

sembly.

B. Press flange bearings from lift arm.

C. Remove flange nut, flat washer and support hub

0.750” (19.1 mm)

2

from tapered stud. Remove tapered stud with spheri-

cal bearing from lift arm after removing retaining ring

from lift arm. Remove flange nut and spherical bear-

ing from stud.

Installation (Fig. 2)

1.If removed, install components to lift arm.

A.Assemble height--of--cut chain u--bolt so that threaded portion of u--bolt extends 0.750” (19.1 mm) above mounting plate on lift arm (Fig. 3).

B.If rod ends were removed from damper, apply Loctite #242 to threads and install on damper. Install damper assembly to lift arm with damper rod end to- ward deck (Fig. 4).

C.Press flange bearings into lift arm.

D.Install spherical bearing on tapered stud and se- cure with flange nut. Torque flange nut from 30 to 40 ft--lb (41 to 54 N--m). Install stud with spherical bear- ing into lift arm and secure with retaining ring.

	1
	Figure 3
1. Lift arm	2. U-bolt threads

2 4

3

1

		Figure 4
1.	Lift arm	3.	Support hub
2.	Deck castor arm	4.	Damper

Chassis

Groundsmaster 4100--D Page 7 -- 5 Chassis