Kubota WSM STV32 Instruction manual

STV32,STV36,STV40
WORKSHOP MANUAL
TRACTOR
KiSC issued 04, 2006 A

TO THE READER
This Workshop Manual has been prepared to provide servicing personnel with information on the mechanism,
service and maintenance of STV32, STV36 and STV40. It is divided into three parts, "General", "Mechanism" and
"Servicing".
Information on the tractor identification, the general precautions, maintenance check list, check and maintenance
and special tools are described.
Information on the construction and function are included. This part should be understood before proceeding with
troubleshooting, disassembling and servicing.
Refer to Diesel Engine / Tractor Mechanism Workshop Manual (Code No. 97897-01872 / 97897-18200) for the one
which has not been described to this workshop manual.
Information on the troubleshooting, servicing specification lists, tightening torque, checking and adjusting,
disassembling and assembling, and servicing which cover procedures, precautions, factory specifications and
allowable limits.
All information illustrations and specifications contained in this manual are based on the latest product information
available at the time of publication.
The right is reserved to make changes in all information at any time without notice.
Due to covering many models of this manual, information or picture being used have not been specified as one
model.
KUBOTA Corporation 2004
BGeneral
BMechanism
BServicing
August 2004
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STV32 · STV36 · STV40, WSM SAFETY INSTRUCTIONS
1
BEFORE SERVICING AND REPAIRING
ARead all instructions and safety instructions in this
manual and on your machine safety decals.
AClean the work area and machine.
APark the machine on a firm and level ground, and set
the parking brake.
ALower the implement to the ground.
AStop the engine, and remove the key
ADisconnect the battery negative cable
AHang a "DO NOT OPERATE" tag in operator
station.
SAFETY STARTING
ADo not start the engine by shorting across starter
terminals or bypassing the safety start switch.
ADo not alter or remove any part of machine safety
system.
ABefore starting the engine, make sure that all shift
levers are in neutral positions or in disengaged
positions.
ANever start the engine while standing on ground.
Start the engine only from operator's seat.
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 attempt to repair or use this unit.
AIndicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
AIndicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
AIndicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
AIndicates that equipment or property damage could result if instructions are not followed.
AGives helpful information.
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STV32 · STV36 · STV40, WSM SAFETY INSTRUCTIONS
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SAFETY WORKING
ADo not work on the machine while under the
influence of alcohol, medication, or other substances
or while fatigued.
AWear close fitting clothing and safety equipment
appropriate to the job.
AUse tools appropriate to the work. Makeshift tools,
parts, and procedures are not recommended.
AWhen servicing is performed together by two or
more persons, take care to perform all work safely.
ADo not work under the machine that is supported
solely by a jack. Always support the machine by
safety stands.
ADo not touch the rotating or hot parts while the
engine is running.
ANever remove the radiator cap while the engine is
running, or immediately after stopping. Otherwise,
hot water will spout out from radiator. Only remove
radiator cap when cool enough to touch with bare
hands. Slowly loosen the cap to first stop to relieve
pressure before removing completely.
AEscaping fluid (fuel or hydraulic oil) under pressure
can penetrate the skin causing serious injury.
Relieve pressure before disconnecting hydraulic or
fuel lines. Tighten all connections before applying
pressure.
AVOID FIRES
AFuel is extremely flammable and explosive under
certain conditions. Do not smoke or allow flames or
sparks in your working area.
ATo avoid sparks from an accidental short circuit,
always disconnect the battery negative cable first
and connect it last.
ABattery gas can explode. Keep sparks and open
flame away from the top of battery, especially when
charging the battery.
AMake sure that no fuel has been spilled on the
engine.
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KiSC issued 04, 2006 A

STV32 · STV36 · STV40, WSM SAFETY INSTRUCTIONS
3
VENTILATE WORK AREA
AIf the engine must be running to do some work, make
sure the area is well ventilated. Never run the engine
in a closed area. The exhaust gas contains
poisonous carbon monoxide.
PREVENT ACID BURNS
ASulfuric acid in battery electrolyte is poisonous. It is
strong enough to burn skin, clothing and cause
blindness if splashed into eyes. Keep electrolyte
away from eyes, hands and clothing. If you spill
electrolyte on yourself, flush with water, and get
medical attention immediately.
DISPOSE OF FLUIDS PROPERLY
ADo not pour fluids into the ground, down a drain, or
into a stream, pond, or lake. Observe relevant
environmental protection regulations when
disposing of oil, fuel, coolant, electrolyte and other
harmful waste.
PREPARE FOR EMERGENCIES
AKeep a first aid kit and fire extinguisher handy at all
times.
AKeep emergency numbers for doctors, ambulance
service, hospital and fire department near your
telephone.
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KiSC issued 04, 2006 A

STV32 · STV36 · STV40, WSM SAFETY INSTRUCTIONS
4
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.
SAFETY DECALS
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STV32 · STV36 · STV40, WSM SAFETY INSTRUCTIONS
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STV32 · STV36 · STV40, WSM SAFETY INSTRUCTIONS
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KiSC issued 04, 2006 A

STV32 · STV36 · STV40, WSM SPECIFICATIONS
7
SPECIFICATIONS
Model STV32 STV36 STV40
PTO power 17.7 kW (24.1 HP)* 20.2 kW (27.5 HP)* 22.8 kW (31.0 HP)
Engine
Maker KUBOTA
Model D1503-M D1703-M D1803-M
Type E-TVCS, water-cooled, 4-cycle diesel
Number of cylinders 3
Bore and stroke 83 x 92.4 mm (3.27 x 3.64 in.) 87 x 92.4 mm (3.43 x 3.64 in.) 87 x 102.4 mm (3.43 x 4.03 in.)
Total displacement 1499 (91.5 cu.in.) 1647 (100.5 cu.in.) 1826 (111.4 cu.in.)
Engine gross power 24.1 kW (32.3 HP)* 26.8 kW (35.9 HP)* 29.5 kW (39.5 HP)*
Rated revolution 2700 rpm
Maximum torque 99.2 (10.0 ) 108.3 (10.9 ) 120.7 (12.2 )
Battery 12 V, RC : 123 min, CCA : 490 A
Starting system Electric starting with cell starter 12 V, 1.4 kW
Lubricating system Forced Iubrication by trochoidal pump
Cooling system Pressurized radiator, forced circulation with water pump
Fuel Diesel fuel No. 2-D [above -10 (14 )], Diesel fuel No. 1-D [below 10 (14 )]
Capacities
Fuel tank 29.5 L (7.79 U.S.gals, 6.49 Imp.gals)
Engine crankcase
(with filter) 6.7 L (7.1 U.S.qts, 5.9 Imp.qts)
Engine coolant 6.1 L (6.4 U.S.qts, 5.4 Imp.qts)
Transmission case 22 L (5.81 U.S.gals, 4.84 Imp.gals)
Front axle case 4.0 L (4.2 U.S.qts, 3.5 Imp.qts)
Tires Front Farm:
6 - 12 Turf: 24 x 8.5 - 14 Farm: 6 - 12 Turf: 24 x 8.5 - 14 Farm: 6 - 12 Turf: 24 x 8.5 - 14
Rear 9.5 - 22 13.6 - 16 9.5 - 22 13.6 - 16 9.5 - 22 13.6 - 16
Dimensions
Overall length
(with 3P) 2860 mm (112.6 in.)
Overall width
(min. tread) 1220 mm (48.0 in.) 1310 mm (51.6 in.) 1220 mm (48.0 in.) 1310 mm (51.6 in.) 1220 mm (48.0 in.) 1310 mm (51.6 in.)
Overall height
(with ROPS) 2350 mm (92.5 in.) 2340 mm (92.1 in.) 2350 mm (92.5 in.) 2340 mm (92.1 in.) 2350 mm (92.5 in.) 2340 mm (92.1 in.)
Wheel base 1610 mm (63.4 in.)
Minimum ground
clearance 235 mm (9.3 in.) 225 mm (18.9 in.) 235 mm (9.3 in.) 225 mm (18.9 in.) 235 mm (9.3 in.) 225 mm (18.9 in.)
Tread
Front 1030 mm (40.6 in.)
Rear
950 mm
(37.4 in.)
1070 mm
(42.1 in.)
965 mm
(38.0 in.)
1055 mm
(41.5 in.)
950 mm
(37.4 in.)
1070 mm
(42.1 in.)
965 mm
(38.0 in.)
1055 mm
(41.5 in.)
950 mm
(37.4 in.)
1070 mm
(42.1 in.)
965 mm
(38.0 in.)
1055 mm
(41.5 in.)
KiSC issued 04, 2006 A

STV32 · STV36 · STV40, WSM SPECIFICATIONS
8
Note : * Manufacture's estimate.
The company reserves the right to change the specifications without notice.
Model STV32 STV36 STV40
Weight (with ROPS) 975 kg
(2150 Ibs) 995 kg (2194 Ibs) 975 kg (2150 Ibs) 995 kg (2194 Ibs) 975 kg (2150 Ibs) 995 kg (2194 Ibs)
Travelling
system
Clutch Dry single plate
Steering Hydrostatic power steering
Transmission Main-hydrostatic transmission, range gear shift (3 forward and 3 reverse)
Brake Wet disk type
Min. turning radius
(with bi-speed turn) 2.2 m (7.2 feet) with brake, 2.5 m (8.2 feet) without brake
Differential Bevel gear
Hydraulic
system
Hydraulic control
system Position control
Pump capacity 3P : 22.3 L / min (5.9 U.S.gals / min, 4.9 Imp.gals min)
Power steering : 13.6 L / min (3.6 U.S.gals / min., 3.0 Imp.gals / min)
Three point hitch SAE Category 1
Max. lift
force
At lift
points 1150 kg (2535 Ibs)
24 in.
behind lift
points 890 kg (1962 Ibs)
PTO
system
Rear PTO shaft SAE 1-3/8, 6 splines
Revolution 2 speeds (540 rpm at 2670 engine rpm, 800 rpm at 2717 engine rpm)
Mid PTO shaft U.S.A. No.5 (KUBOTA 10-tooth) involute spline
Revolution 1 speed (2500 rpm at 2734 engine rpm)
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KiSC issued 04, 2006 A