JINMA HHJM 30 Series User manual

Executive Product Standard:Q/320901YT 010-2004/009-2005
Preface
Thank you for your trust on our HHJM 30-40 series wheel tractors (hereinafter
HHJM -300B, HHJM -304B, HHJM-350, HHJM-354, HHJM-400A, and HHJM-404).
This series is reasonable in structure, excellent in materials and completed in
performance. In order to help customers operate, adjust , repair and maintain the
products in a better way, and for better performance of this series, we compile this
operation manual. As for the operation & maintenance manual of engines, please refer
to diesel engine manual.
With technical development and requirements from our customers, descriptions
in the manual may differ from the real structure of your tractors and the differences
will be involved in the next version. If what you want to know is beyond this book,
please contact the agent or the manufacturer.
Precaution Symbols
In this manual, this precaution symbol means some important safety information.
Seeing this symbol, you should read the contents below it carefully and inform other
operators to protect from possible hurts.
"Warning " and "Attention ": These focus on correct steps or techniqus in
operations. Driver or stander-bys will be hurt or even die due to ignore.
"Important" : These focus on correct steps or techniqus in operations. Your
ignore can result in the damages to tractors or equipments.

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Contents
Preface
Chapter One Precautions for Safe Operations--------------------------------------------------1
Chapter Two General Description------------------------------------------------------------------5
Chapter Three Some key Technical Specifications of the Tractor
3.1 Parameter of the Whole Unit-------------------------------------------------------------6
3.2 Engine Parameter--------------------------------------------------------------------------8
3.3 Transmission system---------------------------------------------------------------------10
3.4 Traveling, steering, and braking-------------------------------------------------------11
3.5 Working Device -------------------------------------------------------------------------12
3.6 Electric System --------------------------------------------------------------------------13
3.7 Perfusion Capacities --------------------------------------------------------------------14
3.8 Air-braking Unit -------------------------------------------------------------------------14
3.9 Reference Data of High Clearance-----------------------------------------------------14
Chapter Four Operation of the Tractor ----------------------------------------------------------15
4.1 Fuel and Lubricating Oil of the Tractor-----------------------------------------------15
4.2 Water--------------------------------------------------------------------------------------16
4.3 Running-in--------------------------------------------------------------------------------17
4.4 Steering Mechanism and Meters-------------------------------------------------------19
4.5 Control and Drive------------------------------------------------------------------------20
4.6 Operation and Use of the Working Units of the Tractor----------------------------27
Chapter Five Technical Maintenance for the Tractor-----------------------------------------34
5.1 Shift Technical Maintenance----------------------------------------------------------34
5.2 I- GradeTechnical Maintenance-------------------------------------------------------35
5.3 II-Grade Technical Maintenance-------------------------------------------------------35
5.4 III-Grade Techincal Maintenance -----------------------------------------------------36
5.5 Techinical Maintenance for Winter----------------------------------------------------37
5.6 Techincal Maintenance for Long-time Storage--------------------------------------37
Chapter Six Structure of the Tractor and Its Maintenance

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6.1 Tramsmission-----------------------------------------------------------------------------39
6.1.1 Clutch-----------------------------------------------------------------------------------39
6.1.2 Shaft Coupling-------------------------------------------------------------------------42
6.1.3 Gear Box Assembly ------------------------------------------------------------------43
6.1.4 Differential Gear and Differential Lock--------------------------------------------45
6.1.5 Final Transmission--------------------------------------------------------------------48
6.2 T ravel & Steering System-------------------------------------------------------------49
6.2.1 Steering Gear --------------------------------------------------------------------------49
6.2.2 Brake------------------------------------------------------------------------------------53
6.2.3 Two-wheel Front Driving Axle-----------------------------------------------------55
6.2.4 Front Driving Axle--------------------------------------------------------------------57
6.2.5 Wheels----------------------------------------------------------------------------------62
6.3 Working Unit----------------------------------------------------------------------------64
6.3.1 Suspending System--------------------------------------------------------------------64
6.3.2 Structure and Use of PTO Shaft-----------------------------------------------------70
6.4 Electric Installation----------------------------------------------------------------------71
6.4.1 Engine-----------------------------------------------------------------------------------72
6.4.2 VoltageAdjuster-----------------------------------------------------------------------77
6.4.3 Battery----------------------------------------------------------------------------------78
6.4.4 Starter-----------------------------------------------------------------------------------81
6.4.5 Preheating Plug------------------------------------------------------------------------83
6.4.6 Fuse Box--------------------------------------------------------------------------------84
6.4.7 Front and Back Lights and Horn--------------------------------------------------84
6.4.8 Current meter, Oil Pressure Meter, Water Temperature gage and Chronometer----84
6.5 Intake & Exhaust System---------------------------------------------------------------85
6.6 Use and Adjustment of Air-braking device of the Trailer------------------------87
Chapter Seven Main Troubles and The Solutions---------------------------------------------90
7.1 Diesel is Hard to Start or can't Be Start-----------------------------------------------90
7.2 Self -stop of Diesel----------------------------------------------------------------------90
7.3 Inefficient Power of Diesel------------------------------------------------------------91

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7.4 Abnormal Air Exhaust Color----------------------------------------------------------91
7.5 Over- high temperature of Exhausted Water----------------------------------------92
7.6 Speed of Diesel Raises Suddenly (Flying Diesel)----------------------------------92
7.7 Abnormal Sound during Engine Running------------------------------------------ 92
7.8 Too low pressure or Zero Pressure of Diesel Oil-----------------------------------93
7.9 Brake--------------------------------------------------------------------------------------93
7.10 Clutch-----------------------------------------------------------------------------------93
7.11 Hydraulic Suspending System--------------------------------------------------------94
7.12 Electric System-------------------------------------------------------------------------95
7.12.1Starter ----------------------------------------------------------------------------------95
7.12.2 Batteries--------------------------------------------------------------------------------96
7.12.3 Meters & Indicators-----------------------------------------------------------------96
7.12.4 Lights----------------------------------------------------------------------------------97
7.12.5 Silicon Rectification Generator----------------------------------------------------97
Chapter Eight Appendix----------------------------------------------------------------------------98
8.1 Electric Wiring Map --------------------------------------------------------------------98
8.2 Sizes of the Suspending System--------------------------------------------------------99
8.3 Spare Parts along with the machine------------------------------------------------100
8.4 Tools along with the machine----------------------------------------------------------101

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Chapter One Precautions for Safe Operations
1.1 Only after reading the manual carefully, can the driver who has got special training and
driving license with a full survey record operate the tractor. Tractor cannot be operated without
licenses.
1.2 This machine only can be operated, maintained and repaired by the persons who are familiar
to its features and know related safe operation rules.
1.3 Driver should pay especial attention to the precaution symbol on the machine.
1.4 It is forbidden to drive tractors after being drunk, tired or taking some antipsychotic.
1.5 During operating the tractor, driver should strictly comply with the informed steps according
to the precaution symbols to avoid accidents. When the symbols are lost, polluted or abased, they
should be replaced in time.( See Fig.1--1~Fig. 1-7 for precaution symbols)
For physical safety:
----When using a PTO shaft, a safety
cover should be installed, on which
people are strictly prohibited to sit.
Bush of PTO shaft should be set when
PTO shaft is out of operation.
-----Rotation speeds of farm
implements should match with that of
the tractor PTO.
----- Engine should stop working when
a farm implement is connected.
-----The deviation angle of gimbaled
joint should not be too big when it is
connected with PTO, or the gimbaled
joint can be damaged.
-----Only after the clutch is released
thoroughly, can the gimbaled joint be
connected.
Warning
Warning
To avoid injuries and
deaths, don't seat on
the mud apron.
Fig.1-1 Stuck to the back of the tractor Fig. 1-2 Stuck to the left-back
wheel protecting case.

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For physical safety:
----Read and comprehend the operation
manual before operating tractor;
----When starting the tractor, put into
neutral gear and release the clutch.
-----Sliding down aslope with neutral
gear is strictly prohibited.
-----Only when sitting on the driver's
seat, can an operator start engine;
-----Drunk driving or fatigue driving is
strictly prohibited;
-----Before maintaining and repairing
tractor, operator should stop engine and
take down the key. When engine
works, don't open or disassemble the
safety cover.
Warning
To avoid casualty caused by
overturn or bump, the left and the
right braking pedals should be
jointly locked up.
During parking, slide or
rolling can happen casualty, so
parking brake is needed then.
Warning
Fig. 1-3 Stuck to the front of the dashboard
Fig.1-4 Stuck on the right-back
wheelguard plate
For physical safety:
----Keep yourself far away from
lifting area of the lift link when
operating hydraulic lifter;
----three-point hitch gears are only
applicable for the farm implements
specially designed for three-point
hitch suspending linkages.
Attention
Easy to cause fire.
Keep sparker away.
Attention
Fig. 1-6 Stuck beside the oil
filler of the fuel tank
Fig. Stuck to the back of the tractor Fig.1-7 Stuck near the water
tank
Protect yourself
against scald .

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1.6 Before operation, a new tractor should have a running-
in following the related regulations. And then normal
loaded work can be done.
1.7 Before the tractor moves, on its path should be no
any barrier, and no people between the tractor and the rear
implement or trailer.
1.8 Don't leave driver's seat to start or control the tractor. Each gear shifter should be placed at the "
neutral gear" before starting or getting off the tractor.
1.9 Don't get on or off the tractor during its running. Before repairing the tractor, the machine should
be stopped and the key should be taken off. Repair or check under the tractor is forbidden when the
engine runs.
1.10 To avoid turn-over, only low gears can be used, especially going on high slopes or muddy path.
When going down-slope, clutch engaging or neutral gear is not allowed. Let the running tractor not too
near to any ditch, to avoid damage due to broken trenches.
1.11 In transportation, the left and the right brake pedals should be joined and locked together. Move
PTO handle to the "Apart" position.
1.12 When the suspended implement of the tractor is transferred, hydraulic lifter should be at the
position of "neutral".
1.13 No sharp turn is permitted while driving at a high speed. Sharp turn caused by one-side brake is
prohibited either to avoid turn-over or parts damaging.
1.14 You'd better check and fasten bolts of wheel radial plates and the bolts or nuts in other key
positions.
1.15 When transferring to another field or operating with hung farm implements, high speed is
forbidden to avoid the damage to parts of lifting system and suspending system. Before leaving the
tractor, driver should drop its farm implement first, stop the engine and take off the key to prevent
others from starting the tractor.
1.16 Before starting the tractor, you'd better check oil duct, electric circuit and cooling water. In any
case, it is not allowed to fill the fuel that has not been precipitated or filtrated into tank. After starting
the machine, you'd better pay attention to all indicators and meters.
1.17 Before filling fuel into tank, you'd better stop the engine; Smoking is prohibited during fuel filling
and check & repair for fuel system.
1.18 When deep treaded tires working or transferring in fields, high speed is not allowed; Deep treaded
tires can't be used for transportation.
Fig. 1-8 Stuck on the muffler
High temperature!
Keep away to avoid
scald.

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1.19 Tractor cannot be used with over load to avoid damage to organs. Load limit of the trailer is 3 tons.
1.20 Dirt should be eliminated from radiating water tank to guarantee its heat radiating performance.
When the water tank is too hot, you can't water the engine or water tank with cold water to avoid
breaking the tank. You should reduce its load and only after the water is not so hot can cooling water be
filled with the engine running.
1.21 You should tell your next shift about any troubles of the tractor. During operation in night, fine
lightings are necessary.
℃
1.22 When it works below 0 in winter, exhaust all water in the case of idling operation to avoid
organs freezing caused by remained water.
1.23 Manufacturer is not responsible for any reduced reliability of the machine, personnel hurt or
machine damaging due to any unauthorized reform on the tractor.
1.24 During running or working, if one of the tractor's driving wheels is found severe wheelspin, you
can use the differential lock following its instruction. The differential lock is forbidden to use in any
other case to avoid machine damaging or other accidents.
1.25 During harvesting or operating in field yard, a spark extinguisher should be installed on air exhaust.
1.26 Exhaust elbow and muffler are high temperature components. Within a half hour after starting or
stopping the engine, anyone is not allowed to get near to avoid burn.
1.27 Faulted tractor cannot be put into use, especially when oil pressure is zero or too low, water is too
hot or abnormal sound or smell come. The machine should be stopped for check and the trouble should
be shot in time.
1.28 Only after taking earth wire off from the battery can electric parts be repaired.
1.29 Don't stop the tractor on a big slop. If so, its park brakes should be used and a triangle should be
stuck under the rear wheels.
1.30 The protecting components for driver are not indispensable. However when installing safety
frame on the tractor, a seat belt is necessary; when removing the frame from the tractor, the seat belt
should be removed too to avoid use by mistake.
1.31 When working in fields or muddy area, you'd better remove the dirt from your shoes and keep the
pedals clean. Catch the armrest careful when getting on or off the tractor.
1.32 When driving along the road, you'd better follow the local traffic rules
1.33 In any case kids or no-drivers should be kept far away from the machine to avoid hurts.
1.34 Before using PTO, a protecting cover need be installed.

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Chapter Two General Description
HHJM30~40 series wheel tractors (HHJM-300B, HHJM-304B, HHJM-350, HHJM-354,
HHJM-400A and HHJM-404A) are the newly developed wheel tractors accoording to demands
from our international markets.
HHJM30-40 series wheel tractors are newly developed with kinds of new technologies, new
techniques, and new structures and on the years' production experiences of 18-30 series. The new
series has more reasonable structures and better improved performance. They are more powerful,
economical in oil consumption, high efficient, nice in appearance, easy in operation and
maintenance, convenient for being supported, economical in use and perfect in integrated
performance.
HHJM30-40 series wheel tractors are equipped with 30hp, 35hp, and 40hp vertical and oil-
saving diesels respectively. Direct transmission is used between the engine and the transmission
system and an 8-gear gear box is installed for the work of rototilling, ploughing, harvesting,
transportation and so on. They have a hydraulic suspending system with perfect performance, low-
pressure broad driving wheel tires with fine adhesion, and air-braking device with reliable
performance. Besides, customers can select different types of tractors according to their own
requirements and economic situations. The series include single-acting clutch and dual-acting
clutch, 2-wheel driving and 4-wheel driving, mechanical steering and entirely hydraulic steering.
Warning:
1. Manufacturer is not responsible for any reduced reliability of the machine, personnel
hurt or machine damaging due to any unauthorized reform on the tractor.
2. You can only use the implements specially designed for this series. Customers
should try to avoid possible damages to the machines caused by the farm implements
that don't follow the configuring regulations.