Rural King RK37 Hydrostatic User manual

OPERATOR'S MANUAL
RK37
Hydrostatic
RK37
Hydrostatic
Rural King Supply
4216 Dewitt Ave.
Mattoon IL 61938
RK37
RK37
Hydrostatic
OPERATOR'SMANUAL
OPERATOR'S MANUAL
RK37
Hydrostatic
RK37
Hydrostatic
Rural King Supply
4216 Dewitt Ave.
Mattoon IL 61938
RK37
RK37
Hydrostatic
OPERATOR'SMANUAL
OPERATOR'S MANUAL
RK37
Hydrostatic
RK37
Hydrostatic
Rural King Supply
4216 Dewitt Ave.
Mattoon IL 61938
RK37
RK37
Hydrostatic
OPERATOR'SMANUAL

Thank you for purchasing our tractor. We are confident it will give you many years of reliable Service.
The introduction in this manual sets out the correct manner of operating, maintaining and checking the tractor
to ensure long-term durability.
Please ensure correct operation of the tractor as incorrect operation can cause substantial mechanical damage
as well as cause accidents with the associated injuries.
Please note that in some cases differences can exist between this manual and your tractor due to the manu-
facture’s policy of constant product improvement.
In the event that you encounter a problem not covered by this manual please contact your nearest RK Trac-
tors who will assist you in resolving your problem.
FOREWORD
FOREWORD
WARNING
CALIFORNIA Proposition 65 Warning
The Engine Exhaust from this product contains chemicals known to the
state of California to cause cancer, birth defects or other reproductive
harm.
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The following warning signs in this manual draw additional attention to items of importance for the safe and
correct operation of the tractor.
WARNING SIGNS IN THIS MANUAL
DANGER
This indicates that a condition may result in harm, serious injury or death to you or oth-
er persons if the warning is not heeded. Follow the advice provided with the warning.
WARNING
Hazard or unsafe practice that can lead to severe injury or death.
CAUTION
Hazard or unsafe practice that can lead in injury or death.
IMPORTANT
Instructions for the correct operation of the machine which, if followed, will ensure
that it performs at it’s best.
All information, illustrations and specifications in this manual are based on latest information available at the
time of publication. The right is reserved to make changes at any time without notice.
MEANING OF THE SIGN
SIGN
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- 
SAFETY PRECAUTIONS
1. TRACTOR IDENTIFICATION
The manufacturer warrants this
product and full details of the war-
ranty are provided on a separate
warranty schedule.
WARRANTY OF THE PRODUCT
Service is available from any RK
Tractor store in the country.
To obtain spare parts please contact
your nearest RK Tractor store and
give him the details listed below.

Tractor model

Tractor serial number

Tractor engine number

Part number and description

Quantity required
SERVICE
PARTS
The engine number is stamped on the left hand side of the engine block.
The chassis number is shown on the left hand side of the tractor as shown in
the drawing.
T75O101A
Carved position of the
Engine type or Number
Carved position of
the chassis number
RK3O001A
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- 
SAFETY PRECAUTIONS
2. ABOUT THIS MANUAL
This manual has been prepared to
assist you in following/adopting the
correct procedure for running-in op-
eration and maintenance of your
new RK Tractors (Here in after re-
fer to RK) tractor.
Your tractor has been designed
and built to give maximum perfor-
mance, with good fuel economy and
ease of operation under a wide va-
riety of operating conditions. Prior
to delivery, The tractor was careful-
ly inspected, both at the factory and
by your RK Tractor store, to en-
sure that it reaches you in optimum
conditions .To maintain this condi-
tion and ensure trouble free perfor-
mance. it is important that the rou-
tine services, as specified in this
manual, are carried out at the rec-
ommended intervals.
Read this Manual carefully and
keep it in a convenient place for fu-
ture reference. If at any time you re-
quire advice concerning your trac-
tor, do not hesitate to contact your
Authorized RK Tractor store. He
has trained personnel, genuine
parts and necessary equipments to
undertake all your service require-
ments.
Manufacturer’s policy is one of con-
tinuous improvement, and the right
to change prices, specifications or
equipments at any time without no-
tice is reserved.
All data given in this book is sub-
ject to production variations. Dimen-
sions & weight are approximate only
and the illustrations do not neces-
sarily show tractors in standard con-
dition. For exact information about
any particular tractor, please consult
your RK Tractor store.
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SAFETY PRECAUTIONS
3. INTRODUCTION & DESCRIPTION
The word, ’tractor’ has been derived
from ‘traction’ which means pulling.
A tractor is required to pull or haul
an equipment, implement or trol-
ley which are coupled to the trac-
tor body through suitable linkage.
A tractor can also be used as a
prime mover as it has a power out-
let source which is also called Pow-
er Take or PTO shaft.
In this book the operating, mainte-
nance and storage instructions for
all models of RK Diesel tractors has
been complied. This material has
been prepared in detail to help you
in the better understanding of main-
tenance and efficient operation of
the machine.
If you need any information not giv-
en in this manual, or require the ser-
vices of a trained mechanic, please
get in touch with the RK Tractor
store in your locality. Tractor Stores
are kept informed of the latest meth-
ods of servicing tractors. They stock
genuine spare parts and are backed
by the Company’s full support.
Through this manual. The use of
the terms LEFT, RIGHT, FRONT
and REAR must be understood, to
avoid any confusion when follow-
ing the introductions. The LEFT and
RIGHT means left and right sides of
the tractor when facing forward in
the driver’s seat, Reference to the
FRONT indicates the radiator end
of the tractor, while the REAR, indi-
cates the drawbar end.
When spare parts are required, al-
ways specify the tractor and engine
serial number when ordering these
parts. (See illustration A).This will
facilitate faster delivery and help en-
sure that the correct parts for your
particular tractor is received. The
tractor serial number is punched on
a plate attached to the left hand side
of the engine body (Illust. A), For
TRACTOR AN INTRODUCTION easy reference, we suggest you to
write the number in the space pro-
vided in the owner’s personal data.
Right turn
(Clockwise)
Left turn
(Counterclockwise)
Right Rear
LeftFront
RK3O002A
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SAFETY PRECAUTIONS
▶GENERAL CONSTRUCTION
The transmission case, Engine and
Front Axle Support are bolted to-
gether to form a rigid unit.
▶FRONT AxLE & WHEELS
The 4WD front axle is a center-piv-
ot, reverse Eliot type. The front
wheel drive mechanism is incorpo-
rated as a part of the axle.
The front wheel drive power is taken
off the rear transmission and trans-
mitted to the differential in the front
axle where the power is divided into
right and left and to the respective
nal cases.
In the final cases, the transmitted
revolution is reduced by the level
gears to drive the front wheel. The
4WD mechanism with level gears
provides wider steering and greater
durability.
▶ENGINE
The tractors are fitted with vertical,
Water-cooled 4-cycle and spherical
chamber type YANMAR
ENGINES(3TNV88C-DKTF)
▶TRANSMISSION WITH HST (HY-
DROSTATIC TRANSMISSION)
The Tractor is fitted HST with 3
Range and can be selected Speed
range by HIGH-LOW selector lever.
The Tractor has Two pedals for for-
ward/reverse control . Tractor with
Independent Power Take Off is tted
with electro-hydraulic Clutch Assy.
The Rear PTO and Mid PTO can be
operated both or separately by a le-
ver.
RK tractors are provided with inde-
pendent disc brakes operated by
two road travel. A foot brake lever is
tted for parking.
DESCRIPTION
▶REAR AxLE & WHEELS
This is mounted on ball bearings
and is enclosed in removable hous-
ing which are bolted to the transmis-
sion case. The rim & Disc tted with
Rear tires are bolted to the outer
ange of Rear Axle.
▶HYDRAULIC SYSTEM & LINK-
AGES
RK Tractors are tted with Live (i.e.
system is in operation) independent,
very touch of hydraulic System.
Three point Linkages can be used
for category 1 type of implements.
▶STEERING
It consists of Hydrostatic Power
steering system, which has a hy-
draulic cylinder and tandem type hy-
draulic pump.
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SAFETY PRECAUTIONS
▶ELECTRICAL SYSTEM
A 12 Volt Lead Acid Propylene Bat-
tery is used to activate the Engine
through the Starter Motor and the
Electrical system comprising Horn,
Head Lamp. Side indicator Lamps,
Plough Lamp, Brake Light, Gauge
lamp, Hazard Lamp. Generator or
Alternator, Fuse box also from part
of the Electrical system.

When operating the tractor at
High speed, Do not attempt
to make sharp turns by using
the brakes. This may result in
overturning of the tractor caus-
ing serious injury or DEATH.
WARNING
4. OWNER ASSISTANCE
We at RK Tractors and your RK
Tractor store wants you to be com-
pletely satisfied with your invest-
ment. Normally any problems with
your equipment will be handled by
your RK Tractor store Service De-
partments, however, misunder-
standing can occur. If you feel that
your problem has not been handled
to your satisfaction, we suggest the
following.
Contact the owner or General Man-
ager of the dealership, explain the
problem, and request assistance.
When additional assistance is need-
ed, Your RK Tractor store has direct
access to your office. If you can-
not obtain satisfaction by doing this,
contact the RK Tractors Ofce and
provide them with;

Your name, address and tele-
phone number

Model and tractor serial number
RK Tractor store/Distributor Name
& Address

Machine purchase date and Hours
used

Nature of problem
Before contacting RK Tractors of-
ce, be aware that your problem will
likely to be resolved in the dealer-
ship using the RK Tractor store facil-
ities, equipment and personnel. So
it is important that your initial con-
tact be with the RK Tractor store.
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SAFETY PRECAUTIONS
5. ROPS (ROLL OVER PROTECTIVE STRUCTURES)
RK tractors are equipped with a
frame for the protection of opera-
tors.
In the case of cab tractors the frame
is incorporated in the cab structure.
The objective of the frame or cab
structure is to protect the operator in
the event of a roll over
and they are designed to support
the entire weight of the tractor in
that event.
Each RK ROPS frame or cab struc-
ture is designed and has been test-
ed to meet industry and or govern-
ment standards.
Included in these tests were all
mounting bases and bolts or other
fasteners.
As the ROPS frame or cab together
with the seat belt was designed to
meet certain standards, they must
be maintained in good order and
condition. To achieve this objective,
both the structure and the seat belt
should be inspected on a regular
basis. (Every time the tractor is ser-
viced)
In the event that the seat belt is
damaged or frayed, it should be re-
placed and in the event that the
ROPS frame or any part of the
mounting structure is damaged or
cracked, the faulty component must
be replaced with a new unit. Such a
unit must meet all of the test criteria
of the original unit. Fitment of an in-
ferior item or items affects the certi-
cation of the entire ROPS structure
and the effectiveness of the struc-
ture in the event of an accident.
Drilling or welding of the ROPS
structure is forbidden.
ROLL OVER PROTECTIVE STRUCTURES (ROPS) USE OF THE TRACTOR WITH THE ROPS
LOWERED CAN CAUSE FATAL INJURIES
On some models the ROPS frame
has a fold down feature, which can
be used to enter low buildings etc.
Take care when lowering the upper
section of the ROPS frame and take
extreme care while driving the tractor
with the ROPS frame lowered.
Do not wear the seat belt with
the ROPS lowered and please
remember that the fold down facility
is for special circumstances only and
must not be lowered for general use.
For ROPS frames to be effec-
tive and protect the operator,
the seat belt provided must
be worn in order to keep
operators within the ROPS
protected area in the event of
a roll over. Failure to use the
seat belt can still cause seri-
ous injury or death.
•
DANGER
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- 
SAFETY PRECAUTIONS
If the tractor has rolled over or the
ROPS has damaged (such as strik-
ing an overhead object during trans-
port), It must be replaced to provide
the original protection. After an ac-
cident, check for damages to the
1.ROPS. 2.Seat. 3.seat belt & seat
mountings. Before you operate a
tractor, replace all damaged parts.
Before operating a tractor it is im-
portant to adjust the seat to the
most comfortable position & check
whether it is properly locked in its
position.
DAMAGE OF THE ROPS

If the ROPS is removed or re-
placed, make certain that the
proper hardware is used to re-
place the ROPS and the recom-
mended torque values are applied
to the attaching bolts.
WARNING

Do not use solvents to clean
the seat. Use warm water with
a little detergent added.
NOTE
SEAT SLIDING
WARNING

Do not weld, drill or straighten
the ROPS.
WARNING

Always wear your seat belt if
the tractor is equipped with
ROPS.
WARNING

Never attach chains, ropes to
the ROPS for pulling purpos-
es; this will cause the tractor
to tip backwards. Always pull
from the tractor drawbar. Be
careful when driving through
door opening or under low
overhead objects. Make sure
there is sufficient overhead
clearance for the ROPS fatal
injuries.

Do not put a hand between the
seat and the slides when ad-
justing the seat position. You
can get injured unexpectedly.
CAUTION
RK3O101A
Seat Belt
Forward / Backward
adjustment lever
RK3O003A
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- 10
SAFETY PRECAUTIONS
To select Seat position, move Ad-
justing lever and slide Seat closer to
or away from Dash panel and con-
trols.
Check whether the seat prop-
erly locked in its position be-
fore driving the tractor.
•
DANGER
Always use the seat belt
when the ROPS is installed.
Do not use the seat belt if a
foldable ROPS is down or
there is no ROPS. Check the
seat belt regularly and re-
place if frayed or damaged.
•
DANGER
6. SAFETY INSTRUCTIONS
T74O201A
This symbol means ATTENTION!
YOUR SAFETY IS INVOLVED. The
message that follows the symbol
contains important information about
safety. Carefully read the message.
RECOGNIZE SAFETY INFORMATION SIGNAL WORDS
DANGER
WARNING
CAUTION
T74O202B
A signal word "DANGER, WARN-
ING OR CAUTION" is used with
safety alert symbol. DANGER identi-
es the most serious hazards. Safe-
ty signs with signal Word "DANGER
OR WARNING" are typically near
specific hazards. General precau-
tions are listed on CAUTION safety
signs.
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- 11
SAFETY PRECAUTIONS
READ SAFETY INSTRUCTION
T72O203A
Carefully read all safety instructions
given in this manual for your safety.
Tempering with any of the safety de-
vices can cause serious injuries or
death. Keep all safety signs in good
condition. Replace missing or dam-
aged safety signs.
Keep your tractor in proper condi-
tion and do not allow any unauthor-
ized modications to be carried out
on the tractor, which may impair the
function/safety and affect tractor life.
PROTECTION CHILDREN
T72O204A
Keep children and others away from
the tractor while operating.
BEFORE YOU REVERSE:

Look behind tractor for children.

Do not let children to ride on trac-
tor or any implement.
USE OF ROPS AND SEAT BELT
T72O205A
The Roll Over Protective Struc-
ture (ROPS) has been certified to
industry and/or government stan-
dards. Any damage or alternation
to the ROPS, mounting hard-ware,
or seat belt voids the certification
and will reduce or eliminate protec-
tion for the operator in the event of
a roll-over. The ROPS, mounting
hardware, and seat belt should be
checked after the rst 100 hours of
tractor and every 500 hours there-
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- 12
SAFETY PRECAUTIONS
after for any evidence of damage,
wear or cracks. In the event of dam-
age or alteration, the ROPS must be
replaced prior to further operation of
the tractor.
The seat belt must be worn during
machine operation when the ma-
chine is equipped with a certified
ROPS.
Failure to do so will reduce or elim-
inate protection for the operator in
the event of a roll over.
T72O206A
Do not drive where the tractor could
slip or tip.
Stay alert for holes and rocks in the
terrain, and other hidden hazards.
Slow down before you make a sharp
turn.
Driving forward out of a ditch or
mired condition could cause trac-
tor to tip over backward. Back out of
these situations if possible.
PRECAUTION TO AVOID TIPPING
T72O207A
Before working on the tractor;
Lower all equipment to the ground.
Stop the engine and remove the
key.
PARK TRACTOR SAFELY
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SAFETY PRECAUTIONS
T72O208A
Do not allow riders on the tractor.
Riders on tractor are subject to in-
jury such as being stuck by foreign
objects and being thrown off of the
tractor.
KEEP RIDERS OFF TRACTOR
T72O209A
Handle fuel with care; it is highly
ammable. Do not refuel the tractor
while smoking or near open flame
or sparks.
Always stop engine before refueling
tractors.
Always keep your tractor clean of
accumulated grease, and debris. Al-
ways clean up spilled fuel.
HANDLE FUEL SAFELY AVOID FIRES
T72O210A
Entanglement in rotating shaft can
cause serious injury or death.
Keep PTO shield in place at all
times.
Wear close tting clothing. Stop the
engine and be sure PTO drive is
stopped before making adjustments,
connections, or cleaning out PTO
driven equipment.
STAY CLEAR OF ROTATING SHAFTS
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SAFETY PRECAUTIONS
T72O211A
Use of hazard warning lights and
turn signals are recommended when
towing equipment on public roads
unless prohibited by state or local
regulations.
Use slow moving vehicle (SMV) sign
when driving on public road during
both day & night time, unless pro-
hibited by law.
ALWAYS USE SAFETY LIGHTS AND
DEVICES
T72O212A
Understand service procedure be-
fore doing work.
Keep the surrounding area of the
tractor clean and dry.
Do not attempt to service tractor
when it is in motion.
Keep body and clothing away from
rotating shafts.
Always lower equipment to the
ground. Stop the engine.
Remove the key. Allow tractor
to cool before any work repair is
caused on it.
PRACTICE SAFE MAINTENANCE
Securely support any tractor ele-
ments that must be raised for ser-
vice work.
Keep all parts in good condition and
properly installed.
Replace worn or broken parts. Re-
place damage/missing decals.
Remove any buildup of grease or oil
from the tractor.
Disconnect battery ground cable(-)
before making adjustments on elec-
trical systems or welding on tractor.
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SAFETY PRECAUTIONS
T72O213A
Escaping fluid under pressure can
penetrate the skin causing serious
injury. Keep hands and body away
from pinholes and nozzles, which
eject fluids under high pressure. If
any fluid is injected into the skin.
Consult your doctor immediately.
AVOID HIGH-PRESSURE FLUIDS
T72O214A
Keep sparks, lighted matches, and
open flame away from the top of
battery. Battery gas can explode.
Never check battery charge by plac-
ing a metal object across the poles.
PREVENT BATTERY ExPLOSIONS
T72O215A
Sulfuric acid in battery electrolyte
is poisonous. It is strong enough to
burn skin, cause holes in clothing
and cause blindness if found entry
into eyes.
For adequate safety always;
1. Fill batteries in a well-ventilated
area.
2. Wear eye protection and acid
proof hand gloves.
3. Avoid breathing direct fumes
when electrolyte is added.
4. Do not add water to electrolyte as
it may splash off causing severe
burns.
PREVENT ACID BURNS
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- 1
SAFETY PRECAUTIONS
If you spill acid on yourself;
1. Flush your skin with water.
2. Flush your eyes with water for
10-15 minutes.
Get medical attention immediately.
T72O216A
Do not wear a necktie, scarf or
loose clothing when you work near
moving parts. If these items were to
get caught, severe injury could re-
sult.
Remove rings and other jeweler to
prevent electrical shorts and entan-
glement in moving parts.
SERVICE TRACTOR SAFELY
1. When working with your tractors
electrical components you must
first disconnect the battery ca-
bles.
2. To ensure that there are no acci-
dents from sparks you must first
disconnect the negative battery
cable.
T74O224A
BATTERY DISCONNECT
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SAFETY PRECAUTIONS
T72O217A
Do not start the tractor in an en-
closed building unless the doors &
windows are open for proper venti-
lation, as tractor fumes can cause
sickness or death. If it is necessary
to run an engine in an enclosed
area remove the exhaust fumes by
connecting exhaust pipe extension.
WORK IN VENTILATED AREA
1. The tractor can start even if the
transmission is engaged posi-
tion causing tractor to runaway
and serious injury to the people
standing nearby the tractor.
2. For additional safety keep the pull
to stop knob (Fuel shut off con-
trol) in fully pulled out position.
Transmission in neutral position,
Foot brake engaged and PTO le-
ver in disengaged position while
attending to Safety Starter Switch
or any other work on tractor.
TRACTOR RUNAWAY
1. Brake operated safety switch is
provided on all tractors which al-
low the starting system to be-
come operational only when the
Brake pedal is fully pressed.
2. Do not By-pass this safety starter
switch or work on it. Only Autho-
rized RK Tractor store are recom-
mended to work on safety starter
switch.
3. On some models Safety Starter
switch is provided on transmis-
sion High-low shifter lever and in
PTO shifter lever. The tractor can
be started only if High-low shifter
Safety Starter Switch is to be
replaced after every 2,000
hours/4 years, whichever is
earlier.
•
CAUTION
SAFETY STARTER SWITCH
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SAFETY PRECAUTIONS
EMERGENCY ExITS
If exit from the cab side doors is
blocked (following an accident or ve-
hicle overturn) the alternative safety
exits are indicated by decals.
The possible safety exits are:
• Rear window hatch (All tractors)
• Front window (for versions with
openable front window).
T74O223A
Never let anyone get in the loader
and use the loader as a workbench.
Otherwise, it may lead to a fatal in-
jury or even death.
SAFETY PRECAUTIONS WHEN USING THE LOADER
Do not stand under the lifted load-
er or get close to it. Also, lower the
loader arm onto the ground before
leaving the tractor. Otherwise, it may
lead to a fatal injury or even death.
T74O226AT74O225A
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SAFETY PRECAUTIONS
When attaching or detaching the
loader, fix all parts which are con-
nected to the bucket and boom. The
bucket or boom can be accidental-
ly dropped down, leading to an inju-
ry or even death.
T74O227A
Do not allow loader arms or attach-
ment to contact electrical power
lines. Electrocution will cause seri-
ous injury or death.
T74O229AT74O228A
IMPORTANT

ROPS (Roll Over Protective
Structure), sun canopy or cab-
in are not a FOPS (Falling Ob-
ject Protective Structure).
It never can protect the riders
against falling objects.
Avoid driving the vehicle into
a dangerous area such as fall-
ing rocks zone.
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