Kubota B2650HSDC Instruction manual

B2650HSDC,B3350HSDC
WORKSHOP MANUAL
TRACTOR
KiSC issued 05, 2014 A

TO THE READER
This Workshop Manual tells the servicing personnel about the mechanism, servicing and
maintenance of the B2650HSDC and B3350HSDC. It contains 4 parts: "Information", "General",
"Mechanism" and "Servicing".
Information
This section primarily contains information below.
• Safety First
• Safety Decal
• Specifications
• Dimensions
General
This section primarily contains information below.
• Engine Identification
• Model Identification
• General Precautions
• Maintenance Check List
• Check and Maintenance
• Special Tools
Mechanism
This section contains information on the structure and the function of the unit. Before you continue
with the subsequent sections, make sure that you read this section.
Refer to the latest version of Workshop Manual (Code No. 9Y021-01870 / 9Y021-18200) for the
diesel engine / tractor mechanism that this workshop manual does not include.
Servicing
This section primarily contains information below.
• Troubleshooting
• Servicing Specifications
• Tightening Torques
• Checking, Disassembling and Servicing
Regarding the servicing of Diesel Particulate Filter (DPF), refer to "DIAGNOSIS MANUAL"
(9Y120-02490)
All illustrations, photographs and specifications contained in this manual are of the newest
information available at the time of publication.
KUBOTA reserves the right to change all information at any time without notice.
Since this manual includes many models, information or illustrations and photographs can show
more than one model.
December, 2012
© KUBOTA Corporation 2012
KiSC issued 05, 2014 A

Record of Revisions
For pdf, use search function {Search word} to find all the revised locations.
Last digit
of the
Code No.
Issue
month Main Revised Point and Corrective Measures {Search word} Reference
Page
12014.05 • Add Diagmaster
• Change the reforming mechanism
• Change the after treatment devices
• Change the indication pattern of DPF regeneration and add the
regeneration Mode (Default Version)
• Deleted the electrical system of engine.
• Add the electrical circuit of B3350 (Default Version)
• Change the ENGINE CONTROL SYSTEM
• Add the accelerator sensor calibration
TO THE
READER
1-M5
1-M7
1-M11
–
8-M2
8-S31 to
8-S33
8-S55
KiSC issued 05, 2014 A

I INFORMATION
KiSC issued 05, 2014 A

CONTENTS
1. SAFETY FIRST .............................................................................................................................. I-1
2. SAFETY DECALS .......................................................................................................................... I-4
3. SPECIFICATIONS.......................................................................................................................... I-8
4. TRAVELING SPEEDS.................................................................................................................... I-9
5. DIMENSIONS ............................................................................................................................... I-10
INFORMATION
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-1
1. SAFETY FIRST
WSM000001INI0001US1
BEFORE YOU START SERVICE
• Read all instructions and safety instructions in this
manual and on your machine safety decals.
• Clean the work area and machine.
• Park the machine on a stable and level ground, and
set the parking brake.
• Lower the implement to the ground.
• Stop the engine, then remove the key.
• Disconnect the battery negative cable.
• Hang a "DO NOT OPERATE" tag in the operator
station.
WSM000001INI0010US0
START SAFELY
• Do not do the procedures below when you start the
engine.
– short across starter terminals
– bypass the safety start switch
• Do not alter or remove any part of machine safety
system.
• Before you start the engine, make sure that all shift
levers are in neutral positions or in disengaged
positions.
• Do not start the engine when you stay on the ground.
Start the engine only from operator's seat.
WSM000001INI0015US0
SAFETY FIRST
• This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the
machine itself to warn of the possibility of personal injury. Read these instructions carefully.
• It is essential that you read the instructions and safety regulations before you try to repair or use this
unit.
DANGER
• Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
• Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
• Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate
injury.
IMPORTANT
• Indicates that equipment or property damage could result if instructions are not followed.
NOTE
• Gives helpful information.
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-2
OPERATE SAFELY
• Do not use the machine after you consume alcohol
or medication or when you are tired.
• Put on applicable clothing and safety equipment.
• Use applicable tools only. Do not use alternative
tools or parts.
• When 2 or more persons do servicing, make sure
that you do it safely.
• Do not operate below the machine that only a jack
holds. Always use a safety stand to hold the
machine.
• Do not touch the hot parts or parts that turn when the
engine operates.
• Do not remove the radiator cap when the engine
operates, or immediately after it stops. If not, hot
water can spout out from the radiator. Only remove
the radiator cap when it is at a sufficiently low
temperature to touch with bare hands. Slowly loosen
the cap to release the pressure before you remove it
fully.
• Released fluid (fuel or hydraulic oil) under pressure
can cause damage to the skin and cause serious
injury. Release the pressure before you disconnect
hydraulic or fuel lines. Tighten all connections before
you apply the pressure.
• Do not open a fuel system under high pressure.
The fluid under high pressure that stays in fuel lines
can cause serious injury. Do not disconnect or repair
the fuel lines, sensors, or any other components
between the fuel pump and injectors on engines with
a common rail fuel system under high pressure.
• Put on an applicable ear protective device (earmuffs
or earplugs) to prevent injury against loud noises.
• Be careful about electric shock. The engine
generates a high voltage of more than DC100 V in
the ECU and is applied to the injector.
WSM000001INI0012US0
PREVENT A FIRE
• Fuel is very flammable and explosive under some
conditions. Do not smoke or let flames or sparks in
your work area.
• To prevent sparks from an accidental short circuit,
always disconnect the battery negative cable first
and connect it last.
• The battery gas can cause an explosion. Keep the
sparks and open flame away from the top of battery,
especially when you charge the battery.
• Make sure that you do not spill fuel on the engine.
WSM000001INI0005US0
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-3
KEEP A GOOD AIRFLOW IN THE WORK AREA
• If the engine is in operation, make sure that the area
has good airflow. Do not operate the engine in a
closed area. The exhaust gas contains poisonous
carbon monoxide.
WSM000001INI0006US0
DISCARD FLUIDS CORRECTLY
• Do not discard fluids on the ground, down the drain,
into a stream, pond, or lake. Obey related
environmental protection regulations when you
discard oil, fuel, coolant, electrolyte and other
dangerous waste.
WSM000001INI0007US0
PREVENT ACID BURNS
• Keep electrolyte away from your eyes, hands and
clothing. Sulfuric acid in battery electrolyte is
poisonous and it can burn your skin and clothing and
cause blindness. If you spill electrolyte on yourself,
clean yourself with water, and get medical aid
immediately.
WSM000001INI0008US0
PREPARE FOR EMERGENCIES
• Keep a first aid kit and fire extinguisher ready at all
times.
• Keep the emergency contact telephone numbers
near your telephone at all times.
WSM000001INI0009US0
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-4
2. SAFETY DECALS
The following safety decals are installed on the machine. If a decal becomes damaged, illegible or is not
on the machine, replace it. The decal part number is listed in the parts list.
WSM000001INI0013US0
9Y1210822INI0001US0
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-5
9Y1210822INI0002US0
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-6
9Y1210822INI0003US0
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-7
9Y1210822INI0004US0
CARE OF DANGER, WARNING AND CAUTION LABELS
1. Keep danger, warning and caution labels clean and free from obstructing material.
2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.
3. Replace damaged or missing danger, warning and caution labels with new labels.
4. If a component with danger, warning and caution label(s) affixed is replaced with new part, make sure new label(s)
is (are) attached in the same location(s) as the replace component.
5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to
outside edge.
9Y1210822INI0005US0
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-8
3. SPECIFICATIONS
NOTE
• * Manufacturer's estimate
The company reserves the right to change the specifications without notice.
9Y1210822INI0006US0
Model B2650HSDC B3050HSDC
PTO power* 14.5 kW (19.5 HP)* 20.1 kW (27.0 HP)*
Engine
Maker KUBOTA
Model D1305-E4-D26-Q V1505-T-E4-D26-Q
Type Indirect Injection, Vertical, water-cooled, 4 cycle diesel
Number of cylinders 3 4
Bore and stroke 78 × 78.4 mm (3.1 × 3.1 in.)
Total displacement 1261 cm3(77.0 cu.in.) 1498 cm3(91.5 cu.in.)
Engine gross power* 19.4 kW (26.0 HP)* 24.6 kW (33.0 HP)*
Rated revolution 2500 min-1 (rpm)
Low idling revolution 1100 min-1 (rpm)
Maximum torque 84.0 N·m (8.6 kgf·m, 62.0 lbf·ft) 105.4 N·m (10.75 kgf·m, 77.74 lbf·ft)
Battery 12 V, RC: 80 min, CCA: 430 A
Capacities
Fuel tank 27 L (7.1 U.S.gals, 5.9 Imp.gals)
Engine crankcase (with filter) 4.0 L (4.2 U.S.qts, 3.6 Imp.qts) 4.8 L (5.1 U.S.qts, 4.2 Imp.qts)
Engine coolant 4.3 L (4.5 U.S.qts, 3.8 Imp.qts)
Transmission case 15 L (4.0 U.S.gals, 3.3 Imp.gals)
Dimensions
Overall length (without 3P) 2900 mm (114.2 in.)
Overall width 1365 mm (53.7 in.)
Overall height 2150 mm (84.6 in.)
Wheel base 1666 mm (65.6 in.)
Min. ground clearance 370 mm (14.6 in.)
Tread Front 935 mm (36.8 in.)
Rear 1050 mm (41.3 in.)
Weight 1040 kg (2293 lbs) 1110 kg (2447 lbs)
Traveling
system
Clutch –
Tread Front 7-12
Rear 12.4-16
Steering Hydrostatic type power steering
Transmission Main-hydrostatic transmission, 3 range gear shift (3 forward, 3 reverse)
Brake Wet disc type
Min. turning radius
(with brake) 2.1 m(6.9 feet)
Hydraulic unit
Hydraulic control system Position control
Pump capacity 33.1 L/min (8.7 U.S.gals/min, 7.3 Imp.gals/min)
3-point hitch SAE Category 1
Max. lift force
At lift points 970 kg (2139 lbs)
24 in. behind
lift point 760 kg (1676 lbs)
PTO
Rear-PTO SAE 1-3/8, 6 splines
PTO / Engine speed 1 speed 563 / 2500 min-1 (rpm)
Rear-PTO USA No. 5 (KUBOTA 10-tooth) involve spline
PTO / Engine speed 1 speed 2500 / 2500 min-1 (rpm)
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-9
4. TRAVELING SPEEDS
(At rated engine rpm)
The company reserves the right to change the specification without notice.
9Y1210822INI0007US0
Model B2650
Tire size (Rear) 12.4-16 Farm 13.6-16 Turf
Range gear
shift lever km/h mph km/h mph
Forward
Low 0 to 5.7 0 to 3.6 0 to 6.0 0 to 3.7
Middle 0 to 8.5 0 to 5.3 0 to 8.9 0 to 5.5
high 0 to 19.1 0 to 11.8 0 to 20.0 0 to 12.4
Reverse
Low 0 to 4.3 0 to 2.7 0 to 4.5 0 to 2.8
Middle 0 to 6.4 0 to 3.9 0 to 6.7 0 to 4.1
high 0 to 14.4 0 to 8.9 0 to 15.0 0 to 9.3
Model B3350
Tire size (Rear) 12.4-16 Farm 13.6-16 Turf
Range gear
shift lever km/h mph km/h mph
Forward
Low 0 to 5.7 0 to 3.6 0 to 6.0 0 to 3.7
Middle 0 to 9.3 0 to 5.8 0 to 9.8 0 to 6.1
high 0 to 21.9 0 to 13.6 0 to 23.0 0 to 14.3
Reverse
Low 0 to 4.3 0 to 2.7 0 to 4.5 0 to 2.8
Middle 0 to 7.0 0 to 4.3 0 to 7.3 0 to 4.5
high 0 to 16.5 0 to 10.3 0 to 17.3 0 to 10.7
KiSC issued 05, 2014 A

INFORMATION
B2650HSDC, B3350HSDC, WSM
I-10
5. DIMENSIONS
9Y1210822INI0008US0
KiSC issued 05, 2014 A

G GENERAL
KiSC issued 05, 2014 A

CONTENTS
1. TRACTOR IDENTIFICATION....................................................................................................... G-1
[1] MODEL NAME AND SERIAL NUMBER ................................................................................ G-1
[2] CYLINDER NUMBER............................................................................................................. G-2
2. GENERAL PRECAUTIONS.......................................................................................................... G-3
3. HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING .................................... G-4
[1] WIRING .................................................................................................................................. G-4
[2] BATTERY ............................................................................................................................... G-6
[3] FUSE ...................................................................................................................................... G-6
[4] CONNECTOR ........................................................................................................................ G-6
[5] HANDLING OF CIRCUIT TESTER ........................................................................................ G-7
[6] COLOR OF WIRING ..............................................................................................................G-8
4. LUBRICANTS, FUEL AND COOLANT......................................................................................... G-9
5. TIGHTENING TORQUES........................................................................................................... G-11
[1] GENERAL USE SCREWS, BOLTS AND NUTS .................................................................. G-11
[2] STUD BOLTS ....................................................................................................................... G-11
[3] METRIC SCREWS, BOLTS AND NUTS .............................................................................. G-12
[4] AMERICAN STANDARD SCREWS, BOLTS AND NUTS WITH UNC OR UNF
THREADS ............................................................................................................................ G-12
[5] PLUGS ................................................................................................................................. G-12
6. MAINTENANCE CHECK LIST ................................................................................................... G-13
7. CHECK AND MAINTENANCE ................................................................................................... G-15
[1] DAILY CHECK...................................................................................................................... G-15
[2] CHECK POINTS OF INITIAL 50 HOURS ............................................................................ G-19
[3] CHECK POINTS OF EVERY 50 HOURS ............................................................................ G-21
[4] CHECK POINTS OF EVERY 100 HOURS .......................................................................... G-22
[5] CHECK POINTS OF EVERY 200 HOURS .......................................................................... G-27
[6] CHECK POINTS OF EVERY 300 HOURS .......................................................................... G-30
[7] CHECK POINTS OF EVERY 400 HOURS .......................................................................... G-32
[8] CHECK POINT OF EVERY 800 HOURS ............................................................................. G-32
[9] CHECK POINT OF EVERY 1500 HOURS ........................................................................... G-32
[10]CHECK POINT OF EVERY 3000 HOURS ........................................................................... G-32
[11]CHECK POINTS OF EVERY 1 YEAR.................................................................................. G-33
[12]CHECK POINTS OF EVERY 2 YEARS ............................................................................... G-34
[13]OTHERS............................................................................................................................... G-36
8. SPECIAL TOOLS ....................................................................................................................... G-41
[1] SPECIAL TOOLS FOR ENGINE.......................................................................................... G-41
[2] SPECIAL TOOLS FOR TRACTOR ...................................................................................... G-49
[3] SPECIAL TOOLS FOR CABIN............................................................................................. G-53
9. TIRES ......................................................................................................................................... G-56
[1] TIRE PRESSURE................................................................................................................. G-56
[2] TREAD ADJUSTMENT ........................................................................................................ G-57
(1) Front Wheels .................................................................................................................. G-57
(2) Rear Wheels................................................................................................................... G-57
[3] BALLAST.............................................................................................................................. G-58
[4] TIRE LIQUID INJECTION .................................................................................................... G-59
10. IMPLEMENT LIMITATIONS ....................................................................................................... G-61
GENERAL
KiSC issued 05, 2014 A

GENERAL
B2650HSDC, B3350HSDC, WSM
G-1
1. TRACTOR IDENTIFICATION
[1] MODEL NAME AND SERIAL NUMBER
When contacting your local KUBOTA distributor, always specify
engine serial number, tractor serial number, ROPS serial number
and hour meter reading.
9Y1210822GEG0001US0
(1) Tractor Identification Plate
(2) Tractor Serial Number
(3) CABIN Identification Plate (CABIN
Serial Number)
(4) Engine Serial Number
(5) Diesel Particulate Filter (DPF) Serial
Number
(6) Hour Meter
[A] B2650
[B] B3350
KiSC issued 05, 2014 A

GENERAL
B2650HSDC, B3350HSDC, WSM
G-2
[2] CYLINDER NUMBER
The cylinder numbers of KUBOTA diesel engine are designated
as shown in the figure.
The sequence of cylinder numbers is given as No.1, No.2. No.3
and No.4 starting from the gear case side.
9Y1210822GEG0002US0
KiSC issued 05, 2014 A

GENERAL
B2650HSDC, B3350HSDC, WSM
G-3
2. GENERAL PRECAUTIONS
• When you disassemble, carefully put the parts in a clean area
to make it easy to find the parts. You must install the screws,
bolts and nuts in their initial position to prevent the reassembly
errors.
• When it is necessary to use special tools, use KUBOTA special
tools. Refer to the drawings when you make special tools that
you do not use frequently.
• Before you disassemble or repair machine, make sure that you
always disconnect the ground cable from the battery first.
• Remove oil and dirt from parts before you measure.
• Use only KUBOTA genuine parts for replacement to keep the
machine performance and to make sure of safety.
• You must replace the gaskets and O-rings when you assemble
again. Apply grease (1) to new O-rings or oil seals before you
assemble.
• When you assemble the external or internal snap rings, make
sure that the sharp edge (3) faces against the direction from
which force (2) is applied.
• When inserting spring pins, their splits must face the direction
from which a force is applied. See the figure left side.
• To prevent damage to the hydraulic system, use only specified
fluid or equivalent.
• Clean the parts before you measure them.
• Tighten the fittings to the specified torque. Too much torque can
cause damage to the hydraulic units or the fittings. Not sufficient
torque can cause oil leakage.
• When you use a new hose or pipe, tighten the nuts to the
specified torque. Then loosen (approx. by 45 °) and let them be
stable before you tighten to the specified torque (This is not
applied to the parts with seal tape).
• When you remove the two ends of a pipe, remove the lower end
first.
• Use two pliers in removal and installation. One to hold the stable
side, and the other to turn the side you remove to prevent twists.
• Make sure that the sleeves of flared connectors and tapers of
hoses are free of dust and scratches.
• After you tighten the fittings, clean the joint and apply the
maximum operation pressure 2 to 3 times to examine oil
leakage.
WSM000001GEG0106US0
(1) Grease
(2) Force
(3) Sharp Edge
(4) Axial Force
(5) Rotating Movement
(A) External Circlip
(B) Internal Circlip
KiSC issued 05, 2014 A