Toro Z Master 320 Series 105-6172 Gearbox Installation Instructions PDF

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Summary of Content for Toro Z Master 320 Series 105-6172 Gearbox Installation Instructions PDF

1 All Rights Reserved

Printed in the USA

2001 by The Toro Company 8111 Lyndale Avenue South Bloomington, MN 55420-1196

Gearbox Service Kit Z Master 320/350 Series 48 Mower Part No. 1056172 Part No. 1056178

Form No. 3327295

Installation Instructions

Loose Parts Note: Use the chart below to identify parts for assembly.

DESCRIPTION QTY. USE

Gearbox

Screw

Washer

Spring Pin

1

8

8

1

Installing the Gearbox

Decal 1 Installing the Decal

Blade Bolt, Lefthand thread 1 Installing the Blade Bolt

Identifying the Mowers There are two types of mowers that this gearbox can be installed on. There is the Z320 Series and the Z350 Series. Identify the mower type you have in figures 1 and 2.

Z320 Series Mower

If you have a mower, with heightofcut brackets, as shown in figure 1 then proceed to page 2 for installation instructions.

m-4978

2

1

2

Figure 1 1. Z320 Series mower 2. HeightofCut Brackets

Z350 Series Mower

If you have a mower, with heightofcut posts, as shown in figure 2 then proceed to page 2 for installation instructions.

1

m4857

2

Figure 2 1. Z350 Series mower 2. HeightofCut Posts

2

Installing the Z320 Series Gearbox Note: Each gearbox assembly has three individual fluid boxes.

Removing the Gearbox

1. Remove blades and blade retainers from beneath mower. Save the square key from each gearbox output shaft for use with the new gearbox.

2. Remove any guards connected to the existing gearbox, and disconnect drive shaft.

3. Remove and discard the existing gearbox mounting bolts (8).

4. Remove existing gearbox from top of mower.

Installing the Gearbox

1. Place new gearbox on mower. The vertical output shafts should be centered in the two coneshaped recesses in the top of the mower (Fig. 3).

2. Insert bolts, with washers, through mounting brackets and into gearbox mounting holes (Fig. 3). Torque mounting bolts to 260 25 in.lbs.

Important Torque mounting bolts to 260 25 in.lbs. Bolts have preapplied thread locker.

3. Connect driveshaft to gearbox (use new spring pin included in kit). Attach any guards that were removed for assembly, and connect blade assemblies to new gearbox.

m4629

1

2

3

4

5

Figure 3 1. Gearbox 2. Bolt 3. Washer

4. Pin 5. Decal

Installing the Z350 Series Gearbox Note: Each gearbox assembly has three individual fluid boxes.

Removing the Gearbox

1. Remove blades and blade retainers from beneath mower. Save the square key from each gearbox output shaft for use with the new gearbox.

2. Remove any guards connected to the existing gearbox, and disconnect drive shaft.

3. Remove and discard the existing gearbox mounting bolts (8).

4. Remove existing gearbox from top of mower.

Installing the Gearbox

1. Place new gearbox on mower. The vertical output shafts should be centered in the two coneshaped recesses in the top of the mower (Fig. 4).

2. Insert bolts, with washers, through mounting brackets and into gearbox mounting holes (Fig. 4). Torque mounting bolts to 260 25 in.lbs.

Important Torque mounting bolts to 260 25 in.lbs. Bolts have preapplied thread locker.

3. Connect driveshaft to gearbox (use new spring pin included in kit). Reattach any guards that were removed for assembly, and connect blade assemblies to new gearbox.

1

2 3

4

5

m4957

Figure 4 1. Gearbox 2. Bolt 3. Washer

4. Spring Pin 5. Decal

3

Installing the Decal A new decal has been provided to replace the existing gearbox lubricant decal on the mower. This is for both Z320 and Z350 series gearboxes.

1. Thoroughly clean mower in area of lubrication decal. Install new decal over the existing decal (Fig. 3 and 4).

Installing the Blade Bolt A new blade bolt (lefthand threaded) has been provided to replace the existing right hand blade bolt.

Note: Determine the left and right sides of the machine from the normal operating position.

Refer to the operators manual for the correct procedure of installing the blades and blade bolt.

Servicing the Gearbox Fluid Note: Make sure to use the correct fluid for your machine. There are two different types of fluid.

Gearbox Fluid for all Mowers without the letters TE in the model number.

The following is an exmaple of a model number without the letters TE.

Model No. 74195210000001 and Up

Change fluid:

after initial 100 operating hours.

Note: Fluid will not have to be changed again after initial 100 hour fluid change.

Fluid Type: Automatic Transmission Fluid (Dexron III or equivalent)

Important Do not mix fluids. Use only Automatic Transmission Fluid.

Gearbox Capacity: 51/2 oz. (129.6 ml) each box 161/2 oz. (488 ml) for all three boxes

Check fluid: After every 100 operating hours.

Gearbox Fluid for all Mowers with the letters TE in the model number.

The following is an exmaple of a model number with the letters TE.

Model No. 74804TE220000001 and Up

Change fluid:

after initial 100 operating hours.

each year before storage.

Fluid Type: 85W140 Mobilube or equivalent

Important Do not mix fluids.

Gearbox Capacity: 51/2 oz. (129.6 ml) each box 161/2 oz. (488 ml) for all three boxes

Check fluid: After every 100 operating hours.

Changing the Gearbox Fluid The gearbox fluid must be changed after first 100 operating hours. Change all three gearboxes.

Important Do not mix fluids.

1. Warm the fluid in gearbox by running the mower mower for a few minutes.

2. For the 320 Series remove footrest and two shields that cover gearbox and PTO shaft (Fig. 5).

3. For the 350 Series remove the mower footrest and guards as necessary. This is not valid for all 350 Series models.

21

3

34

m-4979

Figure 5 1. Gearbox Shield 2. PTO Shield

3. Screw 4. Nut

4. Raise mower to upright position.

5. With mower raised, remove plug on the bottom side of the gearbox. Let fluid fully drain into a pan. (Fig. 6).

6. Reinstall the bottom plug into the gearbox using pipe sealant on threads (Fig. 6).

7. Remove the top plug to fill gearbox (Fig. 6).

4

8. Fill gearbox with 51/2 ounces (129.6 ml) of gearbox fluid. For correct fluid; refer to Gearbox Fluid, on page 3.

9. Reinstall the top plug into the gearbox using pipe sealant (Fig. 6).

10. Repeat for remaining gearboxes.

2

2

M-4531

3

4 1

1

3

3

4

Figure 6 1. Gearbox 2. Top plug

3. Side plug 4. Bottom plug

Checking the Gearbox Fluid The gearbox fluid must be checked after every 100 operating hours. Check all three gearboxes.

1. Warm the fluid in gearbox, by running the mower mower for a few minutes.

2. Raise mower to upright position.

3. Remove plug on the side of the gearbox. The fluid level must be up to side hole in gearbox (Fig. 6).

4. If needed, fill fluid into top hole until it runs out the side hole in gearbox. Gear

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