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Toro
Lawn Mower
ProLine H800
Service Manual
Page 8
Toro ProLine H800 - Page 8
348 pages
Manual
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Additional
Reference
Materials
Y
anmar
3TNV76
Service
Manual
Y
anmar
3TNV80F
Service
Manual
Danfoss
DDC20
Axial
Piston
Pump
Service
Manual
Parker
T
orqmotor
Service
Procedure
(TF
,
TG,
TH,
and
TL
Series)
Grammer
Seats
Repair
Manual
Preface
Page
8
ProLine
H800
19241SL
Rev
B
7
9
Table of Contents
Main Page
Title Page
1
Revision History
2
Reader Comments
3
Preface
5
Service Procedure Icons
6
Table of Contents
7
Chapter 1 : Safety
9
Safety Instructions
10
Supervisor’s Responsibilities
10
Before Operating the Machine
11
While Operating the Machine
12
Maintenance and Service
13
Jacking Instructions
15
Raising the Front of the Machine
15
Raising the Rear of the Machine
17
Safety and Instructional Decals
17
Chapter 2 : Specifications and Maintenance
19
Specifications
20
Overall Dimensions
20
Engine - ProLine H800 (for Model 31050)
21
Engine - ProLine H800 (for Model 31050TE and 31051)
22
Hydraulic System
23
Chassis
24
Torque Specifications
25
Identifying the Fastener
25
Calculating the Torque Values When Using a Drive-Adapter Wrench
27
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch)
28
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Fasteners)
29
Other Torque Specifications
30
Conversion Factors
30
Shop Supplies
31
Special Tools
33
Chapter 3 : Troubleshooting
39
GEARS – The Systematic Approach to Defining, Diagnosing and Solving Problems
40
General Hydraulic System Problems
41
Steering Circuit Problems
43
The Height Of Cut Circuit Problems
44
The Cutting Deck Lift Circuit Problems
45
The Hopper Lift Circuit
46
The Hopper Tilt Circuit
47
Chapter 4 : Engine
49
General Information
50
Traction Unit Operator’s Manual
50
Yanmar Service Manuals
50
Service and Repairs
51
Air Cleaner Assembly
51
Exhaust System
53
Radiator
55
Fuel System
59
Engine
63
Chapter 5 : Hydraulic System
69
General Information
71
Checking the Hydraulic Fluid
71
Pushing or Towing the Traction Unit
72
Releasing Pressure from the Hydraulic System
73
Traction Circuit Component Failure
74
Hydraulic Hoses
75
Installing the Hydraulic Hoses and Tubes
76
Installing the Hydraulic Fittings
78
Hydraulic Schematic
81
Hydraulic Flow Diagrams
82
Traction Circuit
82
Steering Circuit
87
Height Of Cut Circuit
90
Auxiliary Control Circuit
93
Testing the Hydraulic System
100
Testing the Traction Circuit - Charge Pressure
102
Testing the Wheel Motors Efficiency
106
Testing the Traction Circuit - Hydraulic Pump Flow and Relief Pressure
112
Testing the Steering Circuit - Steering Control Valve, Relief Valve Pressure and Steering Cylinder
117
Testing the Steering Circuit - Charge Pump Flow
120
Testing the Auxiliary Control Circuit - Cutting Deck Lift Cylinder Internal Leakage
124
Testing the Auxiliary Control Circuit - Hopper Lift Cylinder Internal Leakage
126
Testing the Auxiliary Control Circuit - Hopper Tilt Cylinder Internal Leakage
128
Testing the Height Of Cut Cylinder Internal Leakage
130
Service and Repairs
131
General Precautions for Removing and Installing the Hydraulic System Components
131
Checking the Hydraulic Lines and Hoses
133
Flushing the Hydraulic System
134
Filtering the Closed-Loop Traction Circuit
136
Priming the Hydraulic Pump
138
Charging the Hydraulic System
140
Hydraulic Tank
142
Auxiliary Control Valve
146
Traction Neutral Arm Assembly
149
Hydraulic Pump Assembly
150
Servicing the Hydraulic Piston Pump
154
Servicing the Gear Pump
156
Front Wheel Motors
160
Rear Wheel Motors
164
Servicing the Hydraulic Wheel Motor
169
Differential Valve
171
Height Of Cut Valve
174
Lift Cylinder
177
Steering Control Valve
180
Steering Cylinder
183
Hopper Lift Cylinder
186
Hopper Tilt Cylinder
189
Height Of Cut Cylinder
192
Chute Cleaning Cylinder
195
Oil Cooler
198
Chapter 6 : Electrical System
201
General Information
202
Electrical Schematics and Wire Harness Drawings/Diagrams
202
Electronic Control Unit (ECU)
202
Electrical System Quick Checks
203
Testing the Battery (Open Circuit Test)
203
Testing the Charging System
204
Testing the Glow Plug System
205
Checking the Operation of the Interlock Switches
205
Testing the Electrical Components
206
Fuses
207
Key Switch
210
PTO Switch
212
Hazard Light Switch
214
Differential Lock Switch
216
Radiator Fan Reversal Switch
218
Beacon Light Switch
220
Indicator Lights
222
Height Of Cut Switch
224
Seat Switch
226
Hour Meter
228
Traction Neutral Switch
230
Traction Reverse Switch
231
Parking Brake Switch
232
Oil Pressure Switch
233
PTO Electric Clutch
235
Fuel Stop Solenoid
237
Relays
239
Diode Assembly
243
Slope Sensor (Optional)
244
Service and Repairs
249
Battery Storage
249
Battery Care
249
Servicing the Battery
251
Chapter 7 : Chassis
257
General Information
258
Service and Repairs
259
Wheels
259
Body Assembly
261
Steering Column
264
Lift Arms
266
Traction Pedal
268
Brake Pedal
270
Operator Seat
272
Servicing the Operator Seat
274
Frame Assembly
275
Chapter 8 : Axle and PTO
277
General Information
278
Service and Repairs
279
Servicing the Brake
279
Rear Axle assembly
282
Servicing the Rear Axle
285
Steering Spindle
287
PTO Drive Belt
290
Electric Clutch
291
PTO Driveshaft
293
Servicing the Driveshaft
296
PTO Shaft Assembly
298
Servicing the PTO Shaft Assembly
300
Servicing the Gearbox Assembly
302
Chapter 9 : Hopper Assembly
305
General Information
306
Service and Repairs
307
Hopper Assembly
307
Hopper Frame Assembly
309
Hopper
312
Hopper Lift Frame Assembly
314
Chute Assembly
317
Chapter 10 : Cutting Unit
319
General Information
320
Service and Repairs
321
Idler Assembly
322
Blade Spindle
325
Servicing the Blade Spindle
327
Caster Wheel and Flat Frame Assembly
330
Cutting Deck Rollers and Skids
332
Height Of Cut Linkage
334
Cutting Deck Covers
336
Appendix A: Foldout Drawings
339
Electrical Drawing Designations
340
Hydraulic Schematic
341
Electrical Schematic - Main
343
Electrical Schematic - Lights
344
Wire Harness Diagram - Main
345
Wire Harness Diagram - Lights
346
Wire Harness – Slope Sensor (Optional)
347
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