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Toro
Tractor
08743
Toro 08743 Service Manual
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Form
No.
20251SL
Rev
A
Sand
Pro
®
3040
and
5040
(Models
08743
and
08745)
©
202
1
—The
Toro®
Company
81
1
1
L
yndale
Avenue
South
Bloomington,
MN
55420
Original
Instructions
(EN)
Contact
us
at
www
.T
oro.com.
All
Rights
Reserved
2
Table of Contents
Section 1
7
Table of Contents
7
Preface
8
Chapter 1 :Safety
10
Safety Instructions
10
Think Safety First
11
Jacking Instructions
14
Safety and Instructional Decals
15
Section 2
17
Chapter 2 :Specificationsandmaintenance
18
Specifications
18
Overall Dimensions
18
Engine Specifications (Model 08743)
18
Engine Specifications (Model 08745)
19
Hydraulic System Specifications
19
Chassis Specifications
20
Torque Specifications
21
Calculating the Torque Values When Using a Drive-Adapter Wrench
22
Identifying the Fastener
23
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch)
24
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Fasteners)
26
Other Torque Specifications
27
Conversion Factors
27
Shop Supplies
28
Special Tools
30
Section 3
35
Chapter 3 :Troubleshooting
36
GEARS - the Systematic Approach to Defining, Diagnosing and Solving Problems
36
Troubleshooting - Hydraulic
37
General Hydraulic System Problems
38
Traction System Problems
40
Steering System Problems (Model 08745 Only)
42
Attachment Lift/Lower Problems
43
Attachment Hydraulic Problems
44
Troubleshooting - Electrical
45
Starting Problems
46
General Run Problems
48
Attachment Electrical Problems
49
Section 4
51
General Information
52
Traction Unit Operator's Manual
52
Briggs & Stratton Service Manual
52
Fuel Shut-Off Valve
53
Adjustments
54
Adjusting the Engine Controls
54
Chapter 4: Engine
54
Service and Repairs
57
Cooling System
57
Air Cleaner Assembly
59
Fuel System
61
Engine
65
Section 5
71
Chapter 5 :Hydraulicsystem
73
General Information
73
Traction Unit Operator's Manual and Accessory Installation Instructions
73
Relieving Pressure from the Hydraulic System
73
Towing the Traction Unit
74
Traction Circuit Component Failure
75
Hydraulic Hoses
76
Installing Hydraulic Hoses and Tubes (O-Ring Face Seal Fitting)
77
Installing the Hydraulic Fittings (SAE Straight Thread O-Ring Fittings)
79
Hydraulic Schematics
82
Hydraulic Flow Diagrams
83
Traction Circuit
83
Steering Circuit (Model 08745)
86
Lift Circuit
89
Rear Remote Hydraulic Circuit (Optional)
91
Switch Kit Hydraulic Circuit (Optional)
92
Testing the Hydraulic System
93
Hydraulic Test Selection
96
Testing the Traction Circuit - Charge Pressure
97
Testing the Traction Circuit - Wheel Motor Efficiency
101
Testing the Traction Circuit - Traction Pump (P1) Flow and Relief Pressure
106
Testing the Lift and Steering Circuit - Implement/Charge Pump (P2) Flow and Circuit Relief
110
Testing the Steering Circuit (Model 08745 Only) - Steering Cylinder Internal Leakage
114
Testing the Lift Circuit - Lift Cylinder Internal Leakage
116
Testing the Optional Attachment Circuit - Attachment Pump (P3) Flow and Circuit Relief
118
Adjustments
121
Adjusting the Traction System for Neutral
122
Service and Repairs
124
General Precautions for Removing and Installing the Hydraulic System Components
124
Checking the Hydraulic Lines and Hoses
126
Flushing the Hydraulic System
127
Filtering the Closed-Loop Traction Circuit
129
Priming the Hydraulic Pumps
133
Charging the Hydraulic System
134
Hydraulic Tank
136
Hydraulic Fluid Cooler
138
Piston (Traction) Pump
140
Servicing the Piston (Traction) Pump
144
Wheel Motors
146
Servicing the Wheel Motors
151
Traction Relief Manifold
153
Rear Lift Relief Manifold (Model 08743)
155
Servicing a Hydraulic Cartridge Valve
157
Lift Control Valve
159
Servicing the Lift Control Valve
162
Rear Lift Cylinder
164
Servicing the Rear Lift Cylinder
166
Steering Control Valve (Model 08745)
169
Servicing the Steering Control Valve (Model 08745)
171
Steering Cylinder (Model 08745)
172
Servicing the Steering Cylinder (Model 08745)
174
Front Lift Cylinder (Optional)
177
Servicing the Front Lift Cylinder (Optional)
179
Rear Remote Hydraulics (Optional) or Switch Kit (Optional) Hydraulic Pump
182
Servicing the Optional Rear Remote Hydraulics or Optional Switch Kit Hydraulic Pump
184
Rear Remote Hydraulics Manifold (Optional)
185
Hydraulic Switch Kit Manifold (Optional)
187
Servicing the Optional Hydraulic Switch Kit Manifold
189
Section 6
191
Chapter 6 :Electricalsystem
192
General Information
192
Traction Unit Operator's Manual and Accessory Installation Instructions
192
Electrical Schematics and Wire Harness Drawings/Diagrams
193
Electrical System Quick Checks
194
Testing the Charging System
194
Checking the Operation of the Safety Interlock Switches
195
Testing the Electrical Components
196
Fusible Links
197
Fuses
199
Key Switch
201
Starter Solenoid
202
Hour Meter
204
Seat Switch
205
Traction Neutral Switch
206
Relays with 5 Terminals
209
Diode Assemblies
211
Hydraulic Solenoid Valve Coils (Optional)
213
PTO Switch (Optional)
215
Mode Select Switch (Optional)
216
Light Switch (Optional)
217
Service and Repairs
218
Caring for the Battery
218
Storing the Battery
219
Servicing the Battery
220
General Information/Service and Repairs
227
Chapter 7 :Chassis
228
General Information
228
Traction Unit Operator's Manual and Accessory Installation Instructions
228
Service and Repairs
229
Wheels
229
Parking Brake
233
Traction Pedal and Control Assembly
236
Steering Wheel
239
Steering Gear Box (Model 08743)
240
Servicing the Steering Gear Box (Model 08743)
242
Front Fork
244
Hitch Assembly
248
Operator's Console
250
Operator Seat
251
Electrical Drawing Designations
254
Hydraulic Schematic - Sand Pro 3040
255
Hydraulic Schematic - Sand Pro 5040
256
Electrical Schematic - Sand Pro 3040/5040
257
Wire Harness Drawing - Sand Pro 3040/5040
258
Wire Harness Diagram - Sand Pro 3040/5040
259
Wire Harness - Rear Remote Hydraulics (Optional
260
Wire Harness - Switch Kit (Optional
261
Other manuals for Toro 08743
Operator's Manual
44 pages
Manual
12 pages
Installation Instructions
4 pages
4
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Toro 08743 Specifications
General
Type
Lawn Tractor
Drive
2WD
Transmission
Hydrostatic
Cutting Width
42 in
Cutting Height
1.5-4.5 in
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