Toro Reelmaster 5100-D User manual

Part No. 92796SL, Rev. C
Service Manual
Reelmaster® 5100-D
Preface
The purpose of this publication is to provide the service
technician with information for troubleshooting, testing,
and repair of major systems and components on the
Reelmaster 5100-D
REFER TO THE REELMASTER 5100-D TRACTION
UNIT AND CUTTING UNIT OPERATOR’S MANUALS
FOR OPERATING, MAINTENANCE AND ADJUST-
MENT INSTRUCTIONS. Space is provided in Chap-
ter 2 of this book to insert the Operator’s Manuals and
Parts Catalogs for your machine. Replacement Opera-
tor’s Manuals are available by sending complete Model
and Serial Number of traction unit and cutting unit to:
The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420
TheToroCompanyreservestherighttochangeproduct
specifications or this publication without notice.
This safety symbol means DANGER, WARN-
ING, or CAUTION, PERSONAL SAFETY IN-
STRUCTION. When you see this symbol,
carefully read the instructions that follow.
Failure to obey the instructions may result in
personal injury.
NOTE: A NOTE will give general information about the
correct operation, maintenance, service, testing or re-
pair of the machine.
IMPORTANT: The IMPORTANT notice will give im-
portant instructions which must be followed to pre-
vent damage to systems or components on the
machine.
©The Toro Company - 1992 - 1997, 2004

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Table Of Contents
Chapter 1 - Safety
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
Chapter 2 - Product Records and Manuals
Product Records. . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
Equivalents and Conversions. . . . . . . . . . . . . . . . 2 - 2
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . 2 - 3
Maintenance Interval Charts. . . . . . . . . . . . . . . . . 2 - 4
Equipment Operation
and Service History Report. . . . . . . . . . . . . . . . 2 - 5
Chapter 3 - Mitsubishi Diesel Engine
Introductions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 11
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 15
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 18
Preparation for Engine Repair . . . . . . . . . . . . . . 3 - 25
External Engine Component Repair. . . . . . . . . . 3 - 26
Governor System Repairs . . . . . . . . . . . . . . . . . 3 - 31
Fuel System Repairs . . . . . . . . . . . . . . . . . . . . . 3 - 36
Removing and Installing theEngine. . . . . . . . . . 3 - 44
Cylinder Head Overhaul. . . . . . . . . . . . . . . . . . . 3 - 46
Cylinder Block Overhaul. . . . . . . . . . . . . . . . . . . 3 - 53
Chapter 4 - Hydraulic System
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2
General Information . . . . . . . . . . . . . . . . . . . . . . . 4 - 3
Hydraulic Schematic. . . . . . . . . . . . . . . . . . . . . . . 4 - 6
Hydraulic Flow Diagrams . . . . . . . . . . . . . . . . . . . 4 - 7
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 12
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 15
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 25
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 33
Transmission Repairs. . . . . . . . . . . . . . . . . . . . . 4 - 35
Mowing Circuit Repairs. . . . . . . . . . . . . . . . . . . . 4 - 54
Hydraulic Reservoir and Filter . . . . . . . . . . . . . . 4 - 67
Chapter 5 - Electrical System
Wiring Schematics and Diagrams. . . . . . . . . . . . . 5 - 2
Special Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 5
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 7
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 18
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 32
Chapter 6 - Differential Axle
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . 6 - 2
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 3
Chapter 7 - Steering and Brakes
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 2
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 4
Special Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 4
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 5
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 7
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 9
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 11
Chapter 8 - Cutting Units
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 2
Special Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 3
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 5
Set-up and Adjustments . . . . . . . . . . . . . . . . . . . . 8 - 7
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 15
Chapter 9 - 4WD Rear Axle
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 2
General Information . . . . . . . . . . . . . . . . . . . . . . . 9- 3
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 4
Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 5
Reelmaster® 5100-D Rev. A

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Chapter 1
Safety
Table of Contents
SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . 1
Before Operating. . . . . . . . . . . . . . . . . . . . . . . . . 1
While Operating. . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety Instructions
The Reelmaster 5100-D was tested and certified by
TORO for compliance with the B71.4-1990 specifica-
tions of the American National Standards Institute’s
safety standards for riding mowers when 65 lbs. of
ballastis addedtorearwheelsandarearweightkit,part
no. 75-6690 is installed. Although hazard control and
accident prevention partially are dependent upon the
design and configuration of the machine, these factors
are also dependent upon the awareness, concern, and
proper training of the personnel involved in the opera-
tion, transport, maintenance, and storage of the ma-
chine.
Before Operating
1. Read and understand the Operator’s Manual before
starting, operating, maintaining or repairing the ma-
chine. Become familiar with the controls and know how
to stop the machine and engine quickly. Replacement
Operator’s Manuals are available by sending complete
Model and Serial Number of traction unit and cutting
units to:
The Toro Company
8111 Lyndale Avenue South
Minneapolis, MN 55420
UsetheModelandSerialNumberwhenreferringtoyour
machine.If youhave questionsaboutthis ServiceInfor-
mation, please contact:
The Toro Company
Commercial Service Department
8111 Lyndale Avenue South
Minneapolis, MN 55420
2. Never allow children to operate the machine. Do not
allow adults to operate the machine without proper
instruction. Only trained operators who have read the
Operator’s Manual should operate the machine.
While Doing Maintenance, Troubleshooting,
Testing, Adjustments or Repairs . . . . . . . . . . . . . 3
j
Improper operation, maintenance, trou-
bleshooting, testing, adjustments or repairs
ofthemachinecan resultinin uryor death.To
reduce the potential for injury or death, com-
ply with the following safety instructions.
CAUTION
3.Neveroperatethemachine when underthe influence
of drugs or alcohol.
4. Keep all shields, safety devices and decals in place.
If a shield, safety device or decal is defective or dam-
aged,repair or replace it before operating the machine.
Also tighten any loose nuts. bolts or screws to ensure
machine is in safe operating condition.
5. Always wear substantial shoes. Do not operate ma-
chinewhilewearing sandals,tennis shoes,sneakers.or
when barefoot. Do not wear lose fitting clothing that
could get caught in moving parts and possibly cause
personal injury. Wearing safety glasses, safety shoes,
long pants and a helmet is advisable and required by
some local ordinances and insurance regulations.
6. Assure interlock switches are adjusted correctly so
engine cannot be started unless traction pedal is in
NEUTRAL and cutting units are DISENGAGED.
7. Remove all debris or other objects that might be
picked up and thrown by the reels or fast moving com-
ponents from other attached implements. Keep all by-
standers away from operating area.
Reelmaster® 5100-D Page 1 - 1 Safety Instructions

8. Since diesel fuel is highly flammable, handle it C. Do not smoke while handling fuel.
carefully: D. Fill fuel tank outdoors and only to within an inch
A. Use an approved fuel container. of the top of the tank, not the filler neck. Do not
overfill.
B. Do not remove fuel tank cap while engine is hot
or running. E. Wipe up any spilled fuel.
While Operating
9. Sit on the seat when starting and operating the
machine.
10. Before starting the engine:
A. Engage theparking brake.
B. Make sure traction pedal is in NEUTRAL and the
ENABLE / DISABLE switch is in DISABLE.
C. After engine isstarted,release parking brakeand
keep footoff tractionpedal.Machinemustnotmove.
If movement is evident, the neutral return mecha-
nism is adjustedincorrectly;therefor, shutengineoff
and adjust until machine does not move when trac-
tion pedal is released.
11. Seating capacity is one person. Therefore, never
carry passengers.
12. Do not run engine in a confined area without ade-
quate ventilation. Exhaust fumes are hazardous and
could possibly be deadly.
13. Check interlock switches daily for proper operation.
Ifa switchfails,replaceitbeforeoperationthemachine.
The interlock system is for your protection, so do not
bypass it. Replace all interlock switches every two
years.
14. Using the machine demands attention. To prevent
loss of control:
A. Operate only in daylight or when there is good
artificial light.
B. Drive slowly.
C. Watch for holes or other hidden hazards.
D. Look behind machine before backing up.
E. Do not drive close to a sand trap, ditch, creek or
other hazard.
F. Reduce speed when making sharp turns and
turning on a hillside.
G. Avoid sudden stops and starts.
15. Traverse slopes carefully. Do not start or stop sud-
denly when traveling uphill.
16. Operatormustbe skilled and trained in how to drive
onhillsides.Failuretousecautiononslopesorhills may
cause loss of control and vehicle to tip or roll possibly
resulting in personal injury or death. On 4 wheel drive
models, always use the seat belt and ROPS together.
17.Ifenginestalls or loosesheadwayandcannotmake
it to the top of a slope, do not turn machine around.
Always back slowly straight down the slope.
18. DON’T TAKE AN INJURY RISK! When a person or pet
appearsunexpectedlyinornearthemowingarea,STOP
MOWING. Careless operation, combined with terrain
angles, ricochets, or improperly positioned guards can
lead to thrown object injuries. Do not resume mowing
until area is cleared.
19. Do not touch engine, muffler or exhaust pipe while
engine is running or soon afteris stopped. These areas
could be hot enough to cause burns.
20.If cutting unitstrikesasolid objector vibrates abnor-
mally, stop immediately, turn engine off, set parking
brakeandwaitforallmotiontostop.Inspectfordamage.
Ifreel orbedknifeisdamaged,repairorreplace itbefore
operating.Do not attempt to free blocked cutting unit by
reversing its reel direction. Damage to the reel may
result.
21. Before getting off the seat:
A. Move traction pedal to neutral.
B. Set parking brake.
C. Disengagecutting unitsand waitfor reels to stop.
D. Stop engine and remove key from switch.
E.Donotparkon slopes unlesswheels are chocked
or blocked.
Safety Instructions Page 1 - 2 Reelmaster® 5100-D

While Doing Maintenance, Troubleshooting, Testing, Adjustments or Repairs
22. Before servicing or making adjustments, stop the
engine and remove thekey from the ignition switch.
23.Makesuremachine is insafeoperating condition by
keeping all nuts, bolts and screws tight.
24. Frequently inspect all hydraulic line connectorsand
fittings. Make sure all hydraulic hoses and lines are in
good condition before applying pressure to the system.
25. Keep body and hands away from pin hole leaks or
nozzles that eject high pressure hydraulic fluid. Use
cardboard or paper to find hydraulic leaks. Hydraulic
fluid escaping under pressure can penetrate the skin
andcauseinjury.Fluidaccidentallyinjectedintotheskin
must be surgically removed within a few hours by a
doctor or gangrene may occur.
26.Beforedisconnecting,orperforminganyworkonthe
hydraulic system, lower the cutting units to the ground
and stop the engine so all pressure is relieved.
27.Be sure you understanda service procedurebefore
working on the machine. Unauthorized modifications to
the machine may impair the function, safety and life of
themachine. If major repairsare everneeded,or assis-
tance is desired, contact your TORO Distributor.
28. To reduce potential fire hazard, keep engine area
free of excessive grease, grass, leaves and dirt. Clean
protective screen on front of engine frequently. Do not
use flammable solvents for cleaning parts. Do not use
diesel fuel, kerosene or gasoline.
29. THE ASBESTOS BRAKE LININGS CONTAIN ASBES-
TOSFIBERS.BREATHING ASBESTOSDUSTMAYBEHAZ-
ARDOUS TO YOUR HEALTH AND MAY CAUSE SERIOUS
RESPIRATORY OR OTHER BODILY HARM. For your pro-
tection:
A. AVOID CREATING DUST.
B.DONOT removebrakedrumwithoutproperequip-
ment.
C. DO NOT work on brake linings without proper
protective equipment.
D. DO NOT replace brake linings without proper
protective equipment.
E. DO NOT attempt to sand, grind, chisel, file, ham-
mer, or alter brake linings in any manner without
proper protective equipment.
F. Follow O.S.H.A. standards for proper protective
devices to be used when working with asbestos
materials.
30. If the engine must be running to perform an inspec-
tionorprocedure,use extreme caution.Always usetwo
people, with the operator atthe controls able to see the
person doing the inspection or procedure. Keep hands,
feet, clothing, and body away from cutting units and
other moving parts.
31.Do notoverspeed the engine by changing governor
setting.
32. Shut engine off before checking or adding oil to the
engine crankcase.
33.Disconnect the cables fromthe battery before serv-
icing the machine. If battery voltage is required for
troubleshootingor testprocedures,temporarily connect
the battery.
34. Do not charge a frozen battery because it can
explode and cause injury. Letthe batterywarmto 60oF
(15.5o C) before connecting to a charger. Charge the
batteryinawell-ventilatedplacesothatgasesproduced
while charging can dissipate. Since the gases are ex-
plosive,keepopenflameandelectricalsparkawayfrom
the battery; do not smoke. Nausea may result if the
gases are inhaled. Unplug the charger from the electri-
cal outlet before connecting or disconnecting the
charger leads from the battery posts.
35. Wear safety glasses, goggles or a face shield to
prevent possible eye injury when using compressed air
for cleaning or drying components.
36. Failure to follow proper procedures when mounting
atire ona wheel or rim can producean explosionwhich
may result in serious injury. Do not attempt to mount a
tire unless you have the proper equipment and experi-
ence to perform the job. Have it done by your Toro
Distributor or a qualified tire service.
37. When changing attachments or performing other
service, use the correct blocks and hoists. Always use
jackstands to safely support the machine when it is
raised by a jack orhoist.
38. Do not use your hand to prevent cutting unit reel
from turning while servicing; this can result in personal
injury.Usea 1-1/2 in. thickx 4 in.wide x 8 in. longpiece
of hardwood inserted into front of cutting unit between
reel blades.
39. For optimum performance and safety, use genuine
Toro replacement parts and accessories. Replacement
parts and accessories made by other manufacturers
may result in non-conformance with the safety stand-
ards, and the warranty may be voided.
Reelmaster® 5100-D Page 1 - 3 Safety Instructions

Safety Instructions Page 1 - 4 Reelmaster® 5100-D

Chapter 2
Product Records and Manuals
Table of Contents
PRODUCT RECORDS. . . . . . . . . . . . . . . . . . . . . . . 1
EQUIVALENTS AND CONVERSIONS . . . . . . . . . . 2
Decimal and Millimeter Equivalents . . . . . . . . . . 2
U.S. to Metric Conversions . . . . . . . . . . . . . . . . . 2
Product Records
Record information about your Reelmaster 5100-D on
the OPERATION AND SERVICE HISTORY REPORT
form. Use this information when referring to your ma-
chine.
TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . . 3
Capscrew Markings and Torque Values - U.S. . . 3
Capscrew Markings and Torque Values - Metric . 3
MAINTENANCE INTERVAL CHART . . . . . . . . . . . . 4
OPERATON AND SERVICE HISTORYREPORT
Insert Operator’s Manuals and Parts Manuals for your
Reelmaster 5100-D at the end of this section.
Reelmaster® 5100-D Page 2 - 1 Rev. A Product Records

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Equivalents and Conversions
Decimal and Millimeter Equivalents
Fractions Decimals mm Fractions Decimals mm
1/64 0.015625 — 0.397 33/64 0.515625 — 13.097
1/32 ––––– 0.03125 — 0.794 17/32 –––– 0.53125 — 13.494
3/64 0.046875 — 1.191 35/64 0.546875 — 13.891
1/16–––––––––––– 0.0625 — 1.588 9/16–––––––––––– 0.5625 — 14.288
5/64 0.078125 — 1.984 37/64 0.578125 — 14.684
3/32 ––––– 0.9375 — 2.381 19/32 –––– 0.59375 — 15.081
7/64 0.109275 — 2.778 39/64 0.609375 — 15.478
1/8––––––––––––– 0.1250 — 3.175 5/8––––––––––––– 0.6250 — 15.875
9/64 0.140625 — 3.572 41/64 0.640625 — 16.272
5/32 ––––– 0.15625 — 3.969 21/32 –––– 0.65625 — 16.669
11/64 0.171875 — 4.366 43/64 0.671875 — 17.066
3/16–––––––––––– 0.1875 — 4.762 11/16 ––––––––––– 0.6875 — 17.462
13/64 0.203125 — 5.159 45/64 0.703125 — 17.859
7/32 ––––– 0.21875 — 5.556 23/32 –––– 0.71875 — 18.256
15/64 0.234375 — 5.953 47/64 0.734375 — 18.653
1/4––––––––––––– 0.2500 — 6.350 3/4––––––––––––– 0.7500 — 19.050
17/64 0.265625 — 6.747 49/64 0.765625 — 19.447
9/32 ––––– 0.28125 — 7.144 25/32 –––– 0.78125 — 19.844
19/64 0.296875 — 7.541 51/64 0.796875 — 20.241
5/16–––––––––––– 0.3125 — 7.938 13/16––––––––––– 0.8125 — 20.638
21/64 0.328125 — 8.334 53/64 0.828125 — 21.034
11/32 –––– 0.34375 — 8.731 27/32 –––– 0.84375 — 21.431
23/64 0.359375 — 9.128 55/64 0.859375 — 21.828
3/8––––––––––––– 0.3750 — 9.525 7/8––––––––––––– 0.8750 — 22.225
25/64 0.390625 — 9.922 57/64 0.890625 — 22.622
13/32 –––– 0.40625 — 10.319 29/32 –––– 0.90625 — 23.019
27/64 0.421875 — 10.716 59/64 0.921875 — 23.416
7/16–––––––––––– 0.4375 — 11.112 15/16––––––––––– 0.9375 — 23.812
29/64 0.453125 — 11.509 61/64 0.953125 — 24.209
15/32 –––– 0.46875 — 11.906 31/32 –––– 0.96875 — 24.606
31/64 0.484375 — 12.303 63/64 0.984375 — 25.003
1/2––––––––––––– 0.5000 — 12.700 1 –––––––––––––– 1.000 — 25.400
1 mm = 0.03937 in. 0.001 in. = 0.0254 mm
U.S to Metric Conversions
To Convert Into Multiply By
Linear Miles Kilometers 1.609
Measurement Yards Meters 0.9144
Feet Meters 0.3048
Feet Centimeters 30.48
Inches Meters 0.0254
Inches Centimeters 2.54
Inches Millimeters 25.4
Area Square Miles
Square Feet
Square Inches
Acre
Square Kilometers 2.59
Square Meters 0.0929
Square Centimeters 6.452
Hectare 0.4047
Vol ume Cubic Yards
Cubic Feet
Cubic Inches
Cubic Meters 0.7646
Cubic Meters 0.02832
Cubic Centimeters 16.39
Weight Tons (Short)
Pounds
Ounces (Avdp.)
Metric Tons 0.9078
Kilograms 0.4536
Grams 28.3495
Pressure Pounds/Sq. In. Kilopascal 6.895
Pounds/Sq. In. Bar 0.069
Work Foot-pounds
Foot-pounds
Inch-pounds
Newton-Meters 1.356
Kilogram-Meters 0.1383
Kilogram-Centimeters 1.152144
Liquid Volume Quarts Liters 0.9463
Gallons Liters 3.785
Liquid Flow Gallons/Minute Liters/Minute 3.785
Temperature Fahrenheit Celsius 1. Subract 32o
2. Multiply by 5/9
Equivalents and Conversions Page 2 - 2 Reelmaster® 5100-D

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Torque Specifications
Use these torque values when specific torque values specified values. Torque values listed are for lubricated
are not given. DO NOT use these values in place of threads.Plated threadsareconsidered tobe lubricated.
Capscrew Markings and Torque Values - U.S. Customary
SAE Grade Number 5 8
Capscrew Head Markings
Capscrew Body Size Capscrew Torque - Grade 5
Cast Iron Alumi Capscrew Torque - Grade 8
num Cast Iron Aluminum
ft-lb Nm ft-lb Nm ft-lb Nm ft-lb Nm
1/4-20 7 9 6 8 11 15 9 12
-28 912 7 913181014
5/16-18 15 20 12 16 22 30 18 24
-24 17 23 14 19 24 33 19 25
3/8-16 30 40 20 25 40 55 30 40
-24 30 40 25 35 45 60 35 45
7/16-14 45 60 35 45 65 90 50 65
-20 50 65 40 55 70 95 55 75
1/2-13 70 95 55 75 95 130 75 100
-20 75 100 60 80 110 150 90 120
9/16-12 100 135 80 110 140 190 110 150
-18 110 150 85 115 155 210 125 170
5/8-11 135 180 110 150 190 255 150 205
-18 155 210 120 160 215 290 170 230
3/4-10 240 325 190 255 340 460 270 365
-16 270 365 210 285 380 515 300 410
7/8-9 360 490 280 380 550 745 440 600
-14 390 530 310 420 610 825 490 660
1-8 530 720 420 570 820 1100 660 890
-14 590 800 480 650 890 1200 710 960
Capscrew Markings and Torque Values – Metric
Commercial Steel Class 8.8 10.9 12.9
Capscrew Head Markings
Thread Capscrew Torque - Class 8.8 Capscrew Torque - Class 10.9 Capscrew Torque - Class 12.9
Diameter Cast Iron Aluminum Cast Iron Aluminum Cast Iron Aluminum
mm ft-lb Nm ft-lb Nm ft-lb Nm ft-lb Nm ft-lb Nm ft-lb Nm
65947914711914711
7 914 7111418111418231418
8182514182332182527362128
10 30 40 25 30 45 60 35 45 50 70 40 55
12 55 70 40 55 75 105 60 80 95 125 75 100
14 85 115 65 90 120 160 95 125 145 195 110 150
16 130 180 100 140 175 240 135 190 210 290 165 220
18 170 230 135 180 240 320 185 250 290 400 230 310
Reelmaster® 5100-D Page 2 - 3 Torque Specifications

Maintenance Interval Chart
Maintenance Interval Chart Page 2 - 4 Rev.A Reelmaster® 5100-D

____________________
____________________
____________________ __________________
____________________ __________________
____________________ __________________
EQUIPMENT OPERATION AND SERVICE HISTORY REPORT
for
REELMASTER®223-D, 5100-D, AND 5300-D
TORO Model and Serial Number:__________-__________
Engine Numbers: ____________________
Transmission Numbers: ____________________
Drive Axle(s)Numbers: ____________________
Date Purchased: ____________________ Warranty Expires__________
Purchased From: ____________________
Contacts: Parts Phone
Service Phone
Sales Phone
See your TORODistributor/Dealer for other Publications, Manuals, and Videos from The TORO Company.

REELMASTER® 223-D, 5100-D, and 5300-D Maintenance Schedule
Minimum Recommended Maintenance Intervals:
Maintenance Procedure Maintenance Interval & Service
Every
Every
Every
Every 800hrs
Check Battery Fluid Level Every 400hrs
200hrs
100hrs
Check Battery Cable Connections 50hrs
Lubricate All Grease Fittings
Change Engine Oil A Level
Inspect Air Filter, Dust Cup, and Baffle Service
† Check Fan and Altenator Belt Tension
‡ Replace Engine Oil Filter B Level
Inspect Cooling System Hoses Service
Drain Moisture-Hyd. Tank
Drain Moisture-Fuel Tank
Check Reel Bearing Preload Adjustment C
† Torque Wheel Lug Nuts Level
Service Air Filter
Replace Electric Fuel Pump Filter
Replace Fuel/WaterSeparator Filter
Inspect Traction Linkage Movement
‡ Torque Head and Adjust Valves D
‡ Check Engine RPM (idle and full throttle) Level
Change Hydraulic Fluid
Change Transmission Fluid
† Replace Transmission Filter
Check Rear Wheel Toe-in
Rear Axle Service
- pack Rear Wheel Bearings (2WD) E Level
- change Rear Axle Lubricant (4WD) Service
† Initial break in at 10 hours
‡ Initial break in at 50 hours
Replace Moving Hoses
Replace Safety Switches Annual Recommendations:
Items listed are recommended every 1600
Coolant System - Flush/Replace Fluid hours or 2 years whichever occurs first.
Fuel Tank - Drain/Flush
Hydraulic Tank - Drain/Flush
(See Operator's and Service Manual for specifications and procedures)

_____________
_____ _____ _____ _____ _____ _____ _____
REELMASTER® 223-D, 5100-D and 5300-D Daily Maintenance Check List
Unit Designation:__________
Daily Maintenance:(duplicate this page for routine use) TORO ID#:_______-_______
Maintenance Check Item
Daily Maintenance Check For Week Of
MON
HRS TUES
HRS WED
HRS THURS
HRS FRI
HRS SAT
HRS SUN
HRS
Safety Interlock Operation
Brake Operation
Engine Oil & Fuel Level
Cooling System Fluid Level
Drain Water/Fuel Separator
Air Filter/Pre-Cleaner Condition
Radiator & Screen for Debris
Unusual Engine Noises1
Unusual Operating Noises
Transmission Oil Level
Hydraulic System Oil Level
Hydraulic Filter Indicator2
Hydraulic Hoses for Damage
Fluid Leaks
Tire Pressure
Instrument Operation
Reel-to-Bedknife Adjustment
Height-of-Cut Adjustment
Cutting Units Shear Pin
Lubricate All Grease Fittings
3
Touch-up damaged paint
1 = Check glow plugs and injector nozzles, if hard starting, excess smoke, or rough running is noted.
2 = Check with engine running and oil at operating temperature.
3 = Immediatelyafter every washing, regardless of the interval listed.
Notation for areas of concern: Inspection performed by:________________
Item Date Information
1
2
3
4
5
6
7
(See Operator's and Service Manual for specifications and procedures)

_________________________________
_________________________________ _________________________________ ______________________________
_________________________________ _________________________________ ______________________________
_________________________________ _________________________________ ______________________________
_________________________________ _________________________________ ______________________________
______________________________
_________________________________ ______________________________
_________________________________ _________________________________ ______________________________
_________________________________ _________________________________ ______________________________
REELMASTER® 223-D, 5100-D, and 5300-D Supervisor Maintenance Work Order Date:______________
(duplicate this page for routine use)
Unit Designation: TORO I.D. #: Remarks:
____________-____________
Service to perform (circle):
A B C D E Other
Technician:
A -Service (every 50 hours) B -Service (every 100 hours) C -Service (every 200 hours)
Check Battery Fluid Level Check Fan and Altenator Belt Tension Drain Moisture-Hyd. Tank
Check Battery Cable Connections Replace Engine Oil Filter Drain Moisture-Fuel Tank
Lubricate All Grease Fittings Inspect Cooling System Hoses Check Reel Bearing Preload
Change Engine Oil A-Service required Torque Wheel Lug Nuts
Inspect Air Filter, Dust Cup, and Baffle A and B Service required
D -Service (every 400 hours) E -Service (every 800 hours) Other
Service Air Filter Change Hydraulic Fluid Replace Moving Hoses
Replace Electric Fuel Pump Filter Change Transmission Fluid Replace Safety Switches
Replace Transmission Filter Coolant System - Flush/Replace Fluid
Inspect Traction Linkage Movement Check Rear Wheel Toe-in Fuel Tank - Drain/Flush
Torque Head and Adjust Valves Pack Rear Wheel Brgs/Change 4WD Oil Hydraulic Tank - Drain/Flush
Check Engine RPM (idle and full throttle) A, B, C, and D Service required
A, B, and C Service required
Hours:
- Annual Service and Specials
Replace Fuel/WaterSeparator Filter
(See Operator's and Service Manual for specifications and procedures) Form No. 95-839-SL

Chapter 3
Mitsubishi Diesel Engine
Table of Contents
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Thermostat Removal and Installation . . . . . . . . 29
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Water Pump Service . . . . . . . . . . . . . . . . . . . . . 30
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 GOVERNOR SYSTEM REPAIRS . . . . . . . . . . . . . 31
Engine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Governor Operation. . . . . . . . . . . . . . . . . . . . . . 31
Lubrication System . . . . . . . . . . . . . . . . . . . . . . . 7 Governor Inspection . . . . . . . . . . . . . . . . . . . . . 32
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Governor Service. . . . . . . . . . . . . . . . . . . . . . . . 33
Governor System . . . . . . . . . . . . . . . . . . . . . . . . 8 Installation of Torque Spring Set . . . . . . . . . . . . 34
Cooling System. . . . . . . . . . . . . . . . . . . . . . . . . . 8 Assembly of Torque Spring Set . . . . . . . . . . . . . 35
Electrical System. . . . . . . . . . . . . . . . . . . . . . . . . 9 FUEL SYSTEM REPAIRS . . . . . . . . . . . . . . . . . . . 36
Tightening Torque . . . . . . . . . . . . . . . . . . . . . . . 10 Bleeding the Fuel System . . . . . . . . . . . . . . . . . 36
SPECIALTOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Bleeding Air From the Injectors . . . . . . . . . . . . . 37
ADJUSTMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Fuel Pump Service . . . . . . . . . . . . . . . . . . . . . . 37
Valve Clearance . . . . . . . . . . . . . . . . . . . . . . . . 13 Injection Pump Service . . . . . . . . . . . . . . . . . . . 38
Engine Speed Adjustments. . . . . . . . . . . . . . . . 14 Nozzle Service. . . . . . . . . . . . . . . . . . . . . . . . . . 41
Throttle Linkage Adjustment . . . . . . . . . . . . . . . 15 Removing and Installing the Fuel Tank . . . . . . . 43
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . 15 REMOVINGAND INSTALLING THE ENGINE. . . . 44
TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Removing the Engine . . . . . . . . . . . . . . . . . . . . 44
Glow PlugTest . . . . . . . . . . . . . . . . . . . . . . . . . 18 Installing the Engine . . . . . . . . . . . . . . . . . . . . . 45
Compression Test . . . . . . . . . . . . . . . . . . . . . . . 19 CYLINDER HEAD OVERHAUL . . . . . . . . . . . . . . . 46
Nozzle Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Cylinder Head Removal. . . . . . . . . . . . . . . . . . . 46
Injection Pump Test. . . . . . . . . . . . . . . . . . . . . . 22 Cylinder Head Service. . . . . . . . . . . . . . . . . . . . 47
Injection Timing Test . . . . . . . . . . . . . . . . . . . . . 23 Valve Guides. . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Fuel Pump Test . . . . . . . . . . . . . . . . . . . . . . . . . 24 Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Thermostat Test. . . . . . . . . . . . . . . . . . . . . . . . . 24 Valve Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
PREPARATION FOR ENGINEREPAIR. . . . . . . . . 25 Valve Springs. . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Cylinder and Cylinder Block Overhaul . . . . . . . 25 Rocker Arm and Rocker Shaft . . . . . . . . . . . . . 50
EXTERNAL ENGINE COMPONENT REPAIR. . . . 26 Cylinder Head Reassembly and Installation . . . 51
Cooling Fan Belt and CYLINDER BLOCK OVERHAUL . . . . . . . . . . . . . . 53
Alternator Belt Replacement. . . . . . . . . . . . . . . 26 GearCase and Oil Pump . . . . . . . . . . . . . . . . . 53
AlternatorRemoval and Installation . . . . . . . . . 27 Timing Gears and Camshafts . . . . . . . . . . . . . . 56
Starter Removal and Installation. . . . . . . . . . . . 27 Piston and Connecting Rod. . . . . . . . . . . . . . . . 59
Replacing and/or Adjusting Stop Solenoid . . . . 28 Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Glow Plug Replacement . . . . . . . . . . . . . . . . . . 29 Cylinder Block . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Oil Pressure Switch Replacement. . . . . . . . . . . 29
Reelmaster® 223-D/5100-D Page 3 - 1 Table of Contents

Introduction
Most repairs and adjustments require tools which are
commonly available in many service shops. Special
toolsaredescribedintheSpecialTools section.Theuse
of some specialized test equipment is explained, how-
ever, the cost ofthe test equipment and the specialized
nature of some repairs may dictate that the work be
done at a qualified diesel engine repair facility.
The engineismanufacturedbyMitsubishiHeavyIndus-
tries Limited. Service and repair parts for Mitsubishi
engines are supplied through TORO Distributors. Re-
pair parts may be ordered by TORO Part Number. If no
parts list is available be sure to provide your dealer or
distributor with the TORO Model Number and Serial
Number. Figure 1a
The engine model number is cast onto the injection
pump side of the cylinder block (Fig. 1a). The serial
number is stamped on the injection pump mounting
surfaceofthecrankcase(Fig.1b).Thereisalsoamodel
and serial number decal on the valve cover.
Figure 1b
Introduction Page 3 - 2 Reelmaster® 223-D/5100-D

Specifications
The illustrations (Figs. 2a and 2b) will give information Refer to the specifications listed in this section when
about the general construction of the engine. performing tests on the engine or examining parts for
wear. Some specifications are included in the service
procedures later in this chapter.
Figure 2a Figure 2b
Reelmaster® 223-D/5100-D Page 3 - 3 Specifications

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General
Item Specification
Make/Designation Mitsubishi L3E-61TG, overhead valve,
vertical in-line, 4 cycle diesel
Combustion Chamber Swirl chamber type
Number of Cylinders 3
Bore x Stroke 76 x 70 mm (2.99 x 2.76 in.)
Total Displacement 952 cc (58 in.3)
Compression Ratio 23:1
Firing Order 1 - 3 - 2
Dry Weight (approximate) 75 kg (165 lb.)
Fuel Diesel
Fuel Injection Pump Bosch type NC
Governor Centrifugal weight type
Fuel Injector Nozzle Throttle type
Fuel Injection Pressure (140 kg/cm2) 1990 psi
Lubrication System Forced lubrication
Oil Pump Gear type
Oil Filter Paper element filter (full flow type)
Crankcase Oil Capacity:
including filter of 0.5 liter (0.6 qt.) capacity - FULL / LOW 3.6 / 1.8 liter (3.8 / 1.9 qt.)
Cooling System Forced circulation, water cooling
Water Pump Centrifugal type
Cooling System Capacity
Engine Only 1.8 liter (1.9 qt.)
Total System (approximate) 6.1 liter (6.4 qt.) with expansion tank
Starter Solenoid shift type
1.6 kW (12 volt)
Alternator AC type 12 volt 40A
Glow Plug Sheathed type
Specifications Page 3 - 4 Reelmaster® 223-D/5100-D
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