Komatsu WB140PS-2N Install guide

April 2003 Copyright 2003 Komatsu
Published in USA
Komatsu America Corp.
00-1
CEBM011100
Shop
Manual
WB140PS-2N
WB150PS-2N
BACKHOE LOADER
This material is proprietary to Komatsu Utility Division and is not to be reproduced, used, or disclosed except in accordance
with written authorization from Komatsu Utility Division.
It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or
add improvements at any time without incurring any obligation to install such changes on products sold previously.
Due to this continuous program of research and development, periodic revisions may be made to this publication. It is recom-
mended that customers contact their distributor for information on the latest revision.
SERIAL NUMBERS WB140PS-2N A40001 and UP
WB150PS-2N A70001
WB140PS-2N, WB150PS-2N

FOREWORD CONTENTS
00-2 WB140PS-2N, WB150PS-2N
12 CONTENTS 00
10 STRUCTURE AND FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
20 TESTING AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
30 REMOVAL AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
90 OTHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1
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FOREWORD SAFETY
WB140PS-2N, WB150PS-2N 00-3
12
SAFETY 00
SAFETY NOTICE 00
GENERAL PRECAUTIONS 00
Mistakes in operation are extremely dangerous. Read the
OPERATION & MAINTENANCE MANUAL carefully
BEFORE operating the machine.
1. Before carrying out any greasing or repairs, read all the
precautions given on the decals which are fixed to the
machine.
2. When carrying out any operation, always wear safety
shoes and helmet. Do not wear loose work clothes, or
clothes with buttons missing.
●Always wear safety glasses when hitting parts with a
hammer.
●Always wear safety glasses when grinding parts with a
grinder, etc.
3. If welding repairs are needed, always have a trained,
experienced welder carry out the work. When carrying
out welding work, always wear welding gloves, apron,
glasses, cap and other clothes suited for welding work.
4. When carrying out any operation with two or more
workers, always agree on the operating procedure
before starting. Always inform your fellow workers
before starting any step of the operation. Before starting
work, hang UNDER REPAIR signs on the controls in
the operator's compartment.
5. Keep all tools in good condition and learn the correct
way to use them.
6. Decide a place in the repair workshop to keep tools and
removed parts. Always keep the tools and parts in their
correct places. Always keep the work area clean and
make sure that there is no dirt or oil on the floor. Smoke
only in the areas provided for smoking. Never smoke
while working.
PREPARATIONS FOR WORK 00
1. Before adding oil or making repairs, park the machine
on hard, level ground, and block the wheels or tracks to
prevent the machine from moving.
2. Before starting work, lower blade, ripper, bucket or any
other work equipment to the ground. If this is not possi-
ble, insert the safety pin or use blocks to prevent the
work equipment from falling. In addition, be sure to
lock all the control levers and hang warning signs on
them.
3. When disassembling or assembling, support the
machine with blocks, jacks or stands before starting
work.
4. Remove all mud and oil from the steps or other places
used to get on and off the machine. Always use the
handrails, ladders or steps when getting on or off the
machine. Never jump on or off the machine. If it is
impossible to use the handrails, ladders or steps, use a
stand to provide safe footing.
PRECAUTIONS DURING WORK 00
1. When removing the oil filler cap, drain plug or hydrau-
lic pressure measuring plugs, loosen them slowly to pre-
vent the oil from spurting out. Before disconnecting or
removing components of the oil, water or air circuits,
first remove the pressure completely from the circuit.
2. The water and oil in the circuits are hot when the engine
is stopped, so be careful not to get burned. Wait for the
oil and water to cool before carrying out any work on
the oil or water circuits.
3. Before starting work, remove the leads from the battery.
ALWAYS remove the lead from the negative (-) termi-
nal first.
IMPORTANT SAFETY NOTICE 00
Proper service and repair is extremely important for the safe operation of your machine. The service and repair techniques
recommended and described in this manual are both effective and safe methods of operation. Some of these operations
require the use of tools specially designed for the purpose.
To prevent injury to workers, the symbols and are used to mark safety precautions in this manual. The cautions accom-
panying these symbols should always be followed carefully. If any dangerous situation arises or may possibly arise, first con-
sider safety, and take the necessary actions to deal with the situation.
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FOREWORD SAFETY
00-4 WB140PS-2N, WB150PS-2N
12
4. When raising heavy components, use a hoist or crane. Check that the wire rope, chains and hooks are free from damage.
Always use lifting equipment which has ample capacity. Install the lifting equipment at the correct places. Use a hoist or
crane and operate slowly to prevent the component from hitting any other part. Do not work with any part still raised by
the hoist or crane.
5. When removing covers which are under internal pressure or under pressure from a spring, always leave two bolts in posi-
tion on opposite sides. Slowly release the pressure, then slowly loosen the bolts to remove.
6. When removing components, be careful not to break or damage the wiring, Damaged wiring may cause electrical fires.
7. When removing piping, stop the fuel or oil from spilling out. If any fuel or oil drips on to the floor, wipe it up immediately.
Fuel or oil on the floor can cause you to slip, or can even start fires.
8. As a general rule, do not use gasoline to wash parts. In particular, use only the minimum of gasoline when washing elec-
trical parts.
9. Be sure to assemble all parts again in their original places. Replace any damaged part with new parts.
●When installing hoses and wires, be sure that they will not be damaged by contact with other parts when the machine is
being operated.
10. When installing high pressure hoses, make sure that they are not twisted. Damaged tubes are dangerous, so be extremely
careful when installing tubes for high pressure circuits. Also check that connecting parts are correctly installed.
11. When assembling or installing parts, always use the specified tightening torques. When installing protective parts such as
guards, or parts which vibrate violently or rotate at high speed, be particularly careful to check that they are installed cor-
rectly.
12. When aligning two holes, never insert your fingers or hand. Be careful not to get your fingers caught in a hole.
13. When measuring hydraulic pressure, check that the measuring tool is correctly assembled before taking any measure-
ments.
14. Take care when removing or installing the tracks of track-type machines. When removing the track, the track separates
suddenly, so never let anyone stand at either end of the track.
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FOREWORD GENERAL
WB140PS-2N, WB150PS-2N 00-5
12
GENERAL 00
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate under-
standing of the product and by showing him the correct way to perform repairs and make judgements. Make sure you under-
stand the contents of this manual and use it to full effect at every opportunity.
This shop manual mainly contains the necessary technical information for operations performed in a service workshop. For
ease of understanding, the manual is divided into the following sections. These sections are further divided into each main
group of components.
GENERAL
This section lists the general machine dimensions, performance specifications, component weights, and fuel, coolant and
lubricant specification charts.
STRUCTURE AND FUNCTION
This section explains the structure and function of each component. It serves not only to give an understanding of the
structure, but also serves as reference material for troubleshooting.
TESTING, ADJUSTING AND TROUBLESHOOTING
This section explains checks to be made before and after performing repairs, as well as adjustments to be made at comple-
tion of the checks and repairs. Troubleshooting charts correlating “Problems” to “Causes” are also included in this section.
DISASSEMBLY AND ASSEMBLY
This section explains the order to be followed when removing, installing, disassembling or assembling each component,
as well as precautions to be taken for these operations.
MAINTENANCE STANDARD
This section gives the judgement standards when inspecting disassembled parts.
NOTICE
The specifications contained in this shop manual are subject to change at any time and without any advance notice. Contact
your distributor for the latest information.
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FOREWORD HOW TO READ THE SHOP MANUAL
00-6 WB140PS-2N, WB150PS-2N
12
HOW TO READ THE SHOP MANUAL 00
VOLUMES 00
Shop manuals are issued as a guide to carrying out repairs.
They are divided as follows:
Chassis volume: Issued for every machine model
Engine volume: Issued for each engine series
Electrical volume: Each issued as one to cover all models
Attachment volume: Each issued as one to cover all models
These various volumes are designed to avoid duplication of
information. Therefore to deal with all repairs for any model,
it is necessary that chassis, engine, electrical and attachment
be available.
DISTRIBUTION AND UPDATING 00
Any additions, amendments or other changes will be sent to
your distributors. Get the most up-to-date information before
you start any work.
FILING METHOD 00
1. See the page number on the bottom of the page. File the
pages in correct order.
2. Following examples show how to read the page number:
Example:
10 - 3
Item number (10. Structure and Function)
Consecutive page number for each item
3. Additional pages: Additional pages are indicated by a
hyphen (-) and numbered after the page number. File as
in the example.
Example:
REVISED EDITION MARK 00
When a manual is revised, an edition mark (123…) is
recorded on the bottom outside corner of the pages.
REVISIONS 00
Revised pages are shown at the LIST OF REVISED PAGES
between the title page and SAFETY page.
SYMBOLS 00
So that the shop manual can be of ample practical use,
important places for safety and quality are marked with the
following symbols.
10-4
10-4-1
Added pages
10-4-2
10-5
Symbol Item Remarks
Safety
Special safety precautions are
necessary when performing the
work.
★Caution
Special technical precautions or
other precautions for preserving
standards are necessary when
performing the work.
Weight
Weight of parts or systems. Cau-
tion necessary when selecting
hoisting wire or when working
posture is important, etc.
Tightening
torque
Places that require special atten-
tion for tightening torque during
assembly.
Coat Places to be coated with adhe-
sives and lubricants etc.
Oil, water Places where oil, water or fuel
must be added, and the capacity.
Drain
Places where oil or water must
be drained, and quantity to be
drained.
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FOREWORD HOISTING INSTRUCTIONS
WB140PS-2N, WB150PS-2N 00-7
12
HOISTING INSTRUCTIONS 00
HOISTING 00
●If a part cannot be smoothly removed from the machine
by hoisting, the following checks should be made:
1. Check for removal of all bolts fastening the part to the
relative parts.
2. Check for existence of another part causing interference
with the part to be removed.
WIRE ROPES 00
1. Use adequate ropes depending on the weight of parts to
be hoisted, referring to the table below:
★The allowable load value is estimated to be 1/6 or 1/7 of
the breaking strength of the rope used.
2. Sling wire ropes from the middle portion of the hook.
Slinging near the edge of the hook may cause the rope to
slip off the hook during hoisting, and a serious accident
can result. Hooks have maximum strength at the middle
portion.
3. Do not sling a heavy load with one rope alone, but sling
with two or more ropes symmetrically wound on to the
load.
4. Do not sling a heavy load with ropes that form a wide
hanging angle from the hook. When hoisting a load with
two or more ropes, the force subjected to each rope will
increase with the hanging angles. The table below
shows the variation of allowable load (kg) when hoist-
ing is made with two ropes, each of which is allowed to
sling up to 1000 kg vertically, at various hanging angles.
When two ropes sling a load vertically, up to 2000 kg of
total weight can be suspended. This weight becomes
1000 kg when two ropes make a 120° hanging angle. On
the other hand, two ropes are subject to an excessive
force as large as 4000 kg if they sling a 2000 kg load at a
lifting angle of 150°.
WARNING! Heavy parts (25 kg or more)
must be lifted with a hoist etc. In
the DISASSEMBLY AND
ASSEMBLY section, every part
weighing 25 kg or more is indi-
cated clearly with the symbol
Wire ropes
(Standard “Z” or “S” twist ropes without galvanizing)
Rope diameter Allowable load
mm kN tons
10 9.8 1.0
11.2 13.7 1.4
12.5 15.7 1.6
14 21.6 2.2
16 27.5 2.8
18 35.3 3.6
20 43.1 4.4
22.4 54.9 5.6
30 98.1 10.0
40 176.5 18.0
50 274.6 28.0
60 392.2 40.0
WARNING! Slinging with one rope may
cause turning of the load during
hoisting, untwisting of the rope,
or slipping of the rope from its
original winding position on the
load, which can result in a dan-
gerous accident
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FOREWORD COATING MATERIALS
00-8 WB140PS-2N, WB150PS-2N
12
COATING MATERIALS 00
★The recommended coating materials prescribed in the shop manuals are listed below.
Category Code Part No. Quantity Container Main applications, features
Adhesives
LT-1A 790-129-9030 150 g Tube ●Used to prevent rubber gaskets, rubber
cushions and cork plugs from coming out
LT-1B 790-129-9050 20 g
(2 pes.)
Polyethylene
container
●Used in places requiring an immediately
effective, strong adhesive.
●Used for plastics (except polyethylene,
polypropylene, tetrafluoroethylene, and
vinyl chloride), rubber, metal and non-
metal.
LT-2 09940-00030 50 g Polyethylene
container
●Features: Resistance to heat, chemicals
●Used for anti-loosening and sealant pur-
poses for bolts and plugs.
LT-3
790-129-9060
(Set of adhesive
and hardening
agent)
Adhesive:
1 kg
Hardening
agent:
500 g
Can ●Used as adhesive or sealant for metal, glass
or plastic.
LT-4 790-129-9040 250 g Polyethylene
container ●Used as sealant for machined holes.
Holtz
MH 705 790-126-9120 75 g Tube ●Used as heat-resisting sealant for repairing
engine.
Three
bond
1735
179-129-9140 2 g Polyethylene
container
●Quick hardening type adhesive.
●Cure time: within 5 sec. to 3 min.
●Used mainly for adhesion of metals, rub-
bers, plastics and woods.
Aron-
alpha
201
790-129-9130 50 g Polyethylene
container
●Quick hardening type adhesive.
●Quick cure type (max. strength after 30
minutes).
●Used mainly for adhesion of rubbers, plas-
tics and metals.
Loctite
648-50 79A-129-9110 50 cc Polyethylene container
●Features: Resistance to heat, chemicals
●Used at joint portions subject to high tem-
perature.
Gasket seal-
ant
LG-1 790-129-9010 200 g Tube ●Used as adhesive or sealant for gaskets and
packing of power train case, etc.
LG-3 790-129-9070 1 kg Can
●Features: Resistance to heat
●Used as sealant for flange surfaces and bolts
at high temperature locations; used to pre-
vent seizure.
●Used as sealant for heat resistant gasket for
at high temperature locations such as engine
pre-combustion chamber, exhaust pipe.
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FOREWORD COATING MATERIALS
00-9 WB140PS-2N, WB150PS-2N
Gasket seal-
ant
LG-4 790-129-9020 200 g Tube
●Features: Resistance to water, oil
●Used as sealant for flange surface, thread.
●Also possible to use as sealant for flanges
with large clearance.
●Used as sealant for mating surfaces of final
drive case, transmission case.
LG-5 790-129-9080 1 kg Polyethylene
container
●Used as sealant for various threads, pipe
joints, flanges.
●Used as sealant for tapered plugs, elbows,
nipples of hydraulic piping.
LG-6 09940-00011 250 g Tube
●Features: Silicon based, resistant to heat,
cold.
●Used as sealant for flange surface, thread.
●Used as sealant for oil pan, final drive case,
etc.
LG-7 09920-00150 150 g Tube
●Features: Silicon based, quick hardening
type.
●Used as sealant for flywheel housing, intake
manifold, oil pan, thermostat housing, etc.
Three
bond
1211
790-129-9090 100 g Tube ●Used as heat-resisting sealant for repairing
engines.
Molybdenum
disulphide
lubricant
LM-G 09940-00051 60 g Can ●Used as lubricant for sliding parts (to pre-
vent squeaking).
LM-P 09940-00040 200 g Tube
●Used to prevent seizure or scuffing of the
thread when press fitting or shrink fitting.
●Used as lubricant for linkage, bearings, etc.
Grease
G2-LI
SYG2-400LI
SYG2-350LI
SYG2-400LI-A
SYG2-160LI
SYGA160CNLI
Various Various ●General purpose type
G2-CA
SYG2-400CA
SYG2-350CA
SYG2-400CA-A
SYG2-160CA
SYG2-
160CNCA
Various Various
●Used for normal temperature, light load
bearing at places in contact with water or
steam.
Molybdenum disulphide lubricant
SYG2-400M 400 g (10 per
case) Belows type ●Used for places with heavy load.
Category Code Part No. Quantity Container Main applications, features
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FOREWORD STANDARD TIGHTENING TORQUE
00-10 WB140PS-2N, WB150PS-2N
12
STANDARD TIGHTENING TORQUE 00
STANDARD TIGHTENING TORQUE OF BOLTS AND NUTS 00
The following charts give the standard tightening torques of bolts and nuts. Exceptions are given in DISASSEMBLY AND
ASSEMBLY.
Thread diameter of bolt Width across flats
mm mm Nm kgm
6 10 13.2 ±1.4 1.35 ±0.15
8 13 31.4 ±2.9 3.20 ±0.3
10 17 65.7 ±6.8 6.70 ±0.7
12 19 112 ±9.8 11.5 ±1.0
14 22 177 ±19 18 ±2.0
16 24 279 ±29 28.5 ±3
18 27 383 ±39 39 ±4
20 30 549 ±58 56 ±6
22 32 745 ±78 76 ±8
24 36 927 ±98 94.5 ±10
27 41 1320 ±140 135 ±15
30 46 1720 ±190 175 ±20
33 50 2210 ±240 225 ±25
36 55 2750 ±290 280 ±30
39 60 3280 ±340 335 ±35
Thread diameter of bolt Width across flats
mm mm Nm kgm
6 10 7.85 ± 1.95 0.8 ± 0.2
8 13 18.6 ± 4.9 1.9 ± 0.5
10 14 40.2 ± 5.9 4.1 ± 0.6
12 27 82.35 ± 7.85 8.4 ± 0.8
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FOREWORD STANDARD TIGHTENING TORQUE
00-11 WB140PS-2N, WB150PS-2N
12
TIGHTENING TORQUE OF HOSE NUTS 00
Use these torques for hose nuts.
TIGHTENING TORQUE OF SPLIT FLANGE BOLTS 00
Use these torques for split flange bolts.
TIGHTENING TORQUE FOR FLARED NUTS 00
Use these torques for flared part of nut.
Nominal No. Thread diameter Width across flat Tightening torque
mm mm Nm kgm
02 14 19 24.5 ± 4.9 2.5 ± 0.5
03 18 24 49 ± 19.6 5 ± 2
04 22 27 78.5 ± 19.6 8 ± 2
05 24 32 137.3 ± 29.4 14 ± 3
06 30 36 176.5 ± 29.4 18 ± 3
10 33 41 196.1 ± 49 20 ± 5
12 36 46 245.2 ± 49 25 ± 5
14 42 55 294.2 ± 49 30 ± 5
Thread diameter Width across flat Tightening torque
mm mm Nm kgm
10 14 65.7 ± 6.8 6.7 ± 0.7
12 17 112 ± 9.8 11.5 ± 1
16 22 279 ± 29 28.5 ± 3
Thread diameter Width across flat Tightening torque
mm mm Nm kgm
14 19 24.5 ±4.9 2.5 ±0.5
18 24 49 ±19.6 5 ±2
22 27 78.5 ±19.6 8 ±2
24 32 137.3 ±29.4 14 ±3
30 36 176.5 ±29.4 18 ±3
33 41 196.1 ±49 20 ±5
36 46 245.2 ±49 25 ±5
42 55 294.2 ±49 30 ±5

FOREWORD ELECTRIC WIRE CODE
00-12 WB140PS-2N, WB150PS-2N
12
ELECTRIC WIRE CODE 00
In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires. This wire code table will
help you understand WIRING DIAGRAMS.
Example: 05WB indicates a cable having a nominal number 05 and white coating with black stripe.
CLASSIFICATION BY THICKNESS 00
CLASSIFICATION BY COLOR AND CODE 00
Nominal num-
ber
Copper wire Cable O.D.
(mm)
Current rat-
ing (A) Applicable circuit
Number of
strands
Dia. Of strand
(mm)
Cross section
(mm)
0.85 11 0.32 0.88 2.4 12 Starting, lighting, signal etc.
2 26 0.32 2.09 3.1 20 Lighting, signal etc.
5 65 0.32 5.23 4.6 37 Charging and signal
15 84 0.45 13.36 7.0 59 Starting (Glow plug)
40 85 0.80 42.73 11.4 135 Starting
60 127 0.80 63.84 13.6 178 Starting
100 217 0.80 109.1 17.6 230 Starting
Priority
Circuits
Classi-
fication
Charging Ground Starting Lighting Instrument Signal Other
1
Primary
Code W B B R Y G L
Color White Black Black Red Yellow Green Blue
2
Auxiliary
CodeWR — BWRW YRGWLW
Color White &
Red —Black & White
Red &
White
Yellow &
Red
Green &
White
Blue &
White
3
Code WB — BY RB YB GR LR
Color White &
Black —Black & Yel- low Red & Black Yellow & Black
Green &
Red Blue & Red
4
Code WL — BR RY YG GY LY
Color White &
Blue — Black & Red Red & Yel- low
Yellow &
Green
Green &
Yellow
Blue & Yel-
low
5
Code WG — — RG YL GB LB
Color White &
Green ——
Red &
Green
Yellow &
Blue
Green &
Black
Blue &
Black
6
Code — — — RL YW GL —
Color — — — Red & Blue Yellow &
White
Green &
Blue —

FOREWORD CONVERSION TABLES
00-13 WB140PS-2N, WB150PS-2N
12
CONVERSION TABLES 00
METHOD OF USING THE CONVERSION TABLE 00
The Conversion Table in this section is provided to enable simple conversion of figures. For details of the method of using the
Conversion Table, see the example given below.
EXAMPLE
●Method of using the Conversion Table to convert from millimeters to inches.
1. Convert 55 mm into inches.
A. Locate the number 50 in the vertical column at the left side, take this as 1, then draw a horizontal line from 1.
B. Locate the number 5 in the row across the top, take this as 2, then draw a perpendicular line down from 2.
C. Take the point where the two lines cross as 3. This point 3gives the value when converting from millimeters to
inches. Therefore, 55 millimeters = 2.165 inches.
2. Convert 550 mm into inches.
A. The number 550 does not appear in the table, so divide by 10 (move the decimal one place to the left) to convert it to
55 mm.
B. Carry out the same procedure as above to convert 55 mm to 2.165 inches.
C. The original value (550 mm) was divided by 10, so multiply 2.165 inches by 10 (move the decimal one place to the
right) to return to the original value. This gives 550 mm = 21.65 inches.
2
Millimeters to inches 1 mm = 0.03937 in
0123456789
0 0 0.039 0.079 0.118 0.157 0.197 0.236 0.276 0.315 0.354
10 0.394 0.433 0.472 0.512 0.551 0.591 0.630 0.669 0.709 0.748
20 0.787 0.827 0.866 0.906 0.945 0.984 1.024 1.063 1.102 1.142
30 1.181 1.220 1.260 1.299 1.339 1.378 1.417 1.457 1.496 1.536
40 1.575 1.614 1.654 1.693 1.732 1.772 1.811 1.850 1.890 1.929
3
150 1.969 2.008 2.047 2.087 2.126 2.165 2.205 2.244 2.283 2.323
60 2.362 2.402 2.441 2.480 2.520 2.559 2.598 2.638 2.677 2.717
70 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110
80 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504
90 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898

FOREWORD CONVERSION TABLES
00-14 WB140PS-2N, WB150PS-2N
12
Millimeters to Inches 1 mm = 0.03937 in
0123456789
0 0 0.039 0.079 0.118 0.157 0.197 0.236 0.276 0.315 0.354
10 0.394 0.433 0.472 0.512 0.551 0.591 0.630 0.669 0.709 0.748
20 0.787 0.827 0.866 0.906 0.945 0.984 1.024 1.063 1.102 1.142
30 1.181 1.220 1.260 1.299 1.339 1.378 1.417 1.457 1.496 1.536
40 1.575 1.614 1.654 1.693 1.732 1.772 1.811 1.850 1.890 1.929
50 1.969 2.008 2.047 2.087 2.126 2.165 2.205 2.244 2.283 2.323
60 2.362 2.402 2.441 2.480 2.520 2.559 2.598 2.638 2.677 2.717
70 2.756 2.795 2.835 2.874 2.913 2.953 2.992 3.032 3.071 3.110
80 3.150 3.189 3.228 3.268 3.307 3.346 3.386 3.425 3.465 3.504
90 3.543 3.583 3.622 3.661 3.701 3.740 3.780 3.819 3.858 3.898
Kilogram to Pound 1 kg = 2.2046 lb
0123456789
0 0 2.20 4.41 6.61 8.82 11.02 13.23 15.43 17.64 19.84
10 22.05 24.25 26.46 28.66 30.86 33.07 35.27 37.48 39.68 41.89
20 44.09 46.30 48.50 50.71 51.91 55.12 57.32 59.53 61.73 63.93
30 66.14 68.34 70.55 72.75 74.96 77.16 79.37 81.57 83.78 85.98
40 88.18 90.39 92.59 94.80 97.00 99.21 101.41 103.62 105.82 108.03
50 110.23 112.44 114.64 116.85 119.05 121.25 123.46 125.66 127.87 130.07
60 132.28 134.48 136.69 138.89 141.10 143.30 145.51 147.71 149.91 152.12
70 154.32 156.53 158.73 160.94 163.14 165.35 167.55 169.76 171.96 174.17
80 176.37 178.57 180.78 182.98 185.19 187.39 189.60 191.80 194.01 196.21
90 198.42 200.62 202.83 205.03 207.24 209.44 211.64 213.85 216.05 218.26

FOREWORD CONVERSION TABLES
00-15 WB140PS-2N, WB150PS-2N
12
Liter to U.S. Gallon 1 L = 0.2642 U.S. Gal
0123456789
0 0 0.264 0.528 0.793 1.057 1.321 1.585 1.849 2.113 2.378
10 2.642 2.906 3.170 3.434 3.698 3.963 4.227 4.491 4.755 5.019
20 5.283 5.548 5.812 6.076 6.340 6.604 6.869 7.133 7.397 7.661
30 7.925 8.189 8.454 8.718 8.982 9.246 9.510 9.774 10.039 10.303
40 10.567 10.831 11.095 11.359 11.624 11.888 12.152 12.416 12.680 12.944
50 13.209 13.473 13.737 14.001 14.265 14.529 14.795 15.058 15.322 15.586
60 15.850 16.115 16.379 16.643 16.907 17.171 17.435 17.700 17.964 18.228
70 18.492 18.756 19.020 19.285 19.549 19.813 20.077 20.341 20.605 20.870
80 21.134 21.398 21.662 21.926 22.190 22.455 22.719 22.983 23.247 23.511
90 23.775 24.040 24.304 24.568 24.832 25.096 25.361 25.625 25.889 26.153
Liter to U.K. Gallon 1 L = 0.21997 U.K. Gal
0123456789
0 0 0.220 0.440 0.660 0.880 1.100 1.320 1.540 1.760 1.980
10 2.200 2.420 2.640 2.860 3.080 3.300 3.520 3.740 3.950 4.179
20 4.399 4.619 4.839 5.059 5.279 5.499 5.719 5.939 6.159 6.379
30 6.599 6.819 7.039 7.259 7.479 7.699 7.919 8.139 8.359 8.579
40 8.799 9.019 9.239 9.459 9.679 9.899 10.119 10.339 10.559 10.778
50 10.998 11.281 11.438 11.658 11.878 12.098 12.318 12.528 12.758 12.978
60 13.198 13.418 13.638 13.858 14.078 14.298 14.518 14.738 14.958 15.178
70 15.398 15.618 15.838 16.058 16.278 16.498 16.718 16.938 17.158 17.378
80 17.598 17.818 18.037 18.257 18.477 18.697 18.917 19.137 19.357 19.577
90 19.797 20.017 20.237 20.457 20.677 20.897 21.117 21.337 21.557 21.777

FOREWORD CONVERSION TABLES
00-16 WB140PS-2N, WB150PS-2N
12
kgm to ft. lb. 1 kgm = 7.233 ft. lb.
0123456789
0 0 7.2 14.5 21.7 28.9 36.2 43.4 50.6 57.9 65.1
10 72.3 79.6 86.8 94.0 101.3 108.5 115.7 123.0 130.2 137.4
20 144.7 151.9 159.1 166.4 173.6 180.8 188.1 195.3 202.5 209.8
30 217.0 224.2 231.5 238.7 245.9 253.2 260.4 267.6 274.9 282.1
40 289.3 296.6 303.8 311.0 318.3 325.5 332.7 340.0 347.2 354.4
50 361.7 368.9 376.1 383.4 390.6 397.8 405.1 412.3 419.5 426.8
60 434.0 441.2 448.5 455.7 462.9 470.2 477.4 484.6 491.8 499.1
70 506.3 513.5 520.8 528.0 535.2 542.5 549.7 556.9 564.2 571.4
80 578.6 585.9 593.1 600.3 607.6 614.8 622.0 629.3 636.5 643.7
90 651.0 658.2 665.4 672.7 679.9 687.1 694.4 701.6 708.8 716.1
100 723.3 730.5 737.8 745.0 752.2 759.5 766.7 773.9 781.2 788.4
110 795.6 802.9 810.1 817.3 824.6 831.8 839.0 846.3 853.5 860.7
120 868.0 875.2 882.4 889.7 896.9 904.1 911.4 918.6 925.8 933.1
130 940.3 947.5 954.8 962.0 969.2 976.5 983.7 990.9 998.2 1005.4
140 1012.6 1019.9 1027.1 1034.3 1041.5 1048.8 1056.0 1063.2 1070.5 1077.7
150 1084.9 1092.2 1099.4 1106.6 1113.9 1121.1 1128.3 1135.6 1142.8 1150.0
160 1157.3 1164.5 1171.7 1179.0 1186.2 1193.4 1200.7 1207.9 1215.1 1222.4
170 1129.6 1236.8 1244.1 1251.3 1258.5 1265.8 1273.0 1280.1 1287.5 1294.7
180 1301.9 1309.2 1316.4 1323.6 1330.9 1338.1 1345.3 1352.63 1359.8 1367.0
190 1374.3 1381.5 1388.7 1396.0 1403.2 1410.4 1417.7 1424.9 1432.1 1439.4

FOREWORD CONVERSION TABLES
00-17 WB140PS-2N, WB150PS-2N
12
kg/cm2to lb/in21 kg/cm2= 14.2233lb/in2
0123456789
0 0 14.2 28.4 42.7 56.9 71.1 85.3 99.6 113.8 128.0
10 142.2 156.5 170.7 184.9 199.1 213.4 227.6 241.8 256.0 270.2
20 284.5 298.7 312.9 327.1 341.4 355.6 369.8 384.0 398.3 412.5
30 426.7 440.9 455.1 469.4 483.6 497.8 512.0 526.3 540.5 554.7
40 568.9 583.2 597.4 611.6 625.8 640.1 654.3 668.5 682.7 696.9
50 711.2 725.4 739.6 753.8 768.1 782.3 796.5 810.7 825.0 839.2
60 853.4 867.6 881.8 896.1 910.3 924.5 938.7 953.0 967.2 981.4
70 995.6 1010 1024 1038 1053 1067 1081 1095 1109 1124
80 1138 1152 1166 1181 1195 1209 1223 1237 1252 1266
90 1280 1294 1309 1323 1337 1351 1365 1380 1394 1408
100 1422 1437 1451 1465 1479 1493 1508 1522 1536 1550
110 1565 1579 1593 1607 1621 1636 1650 1664 1678 1693
120 1707 1721 1735 1749 1764 1778 1792 1806 1821 1835
130 1849 1863 1877 1892 1906 1920 19324 1949 1963 1977
140 1991 2005 2034 2048 2062 2077 2091 2105 2119
150 2134 2148 2162 2176 2190 2205 2219 2233 2247 2262
160 2276 2290 2304 2318 2333 2347 2361 2375 2389 2404
170 2418 2432 2446 2460 2475 2489 2503 2518 2532 2546
180 2560 2574 2589 2603 2617 2631 2646 2660 2674 2688
190 2702 2717 2731 2745 2759 2773 2788 2802 2816 2830
200 2845 2859 2873 2887 2901 2916 2930 2944 2958 2973
210 2987 3001 3015 3030 3044 3058 3072 3086 3101 3115
220 3129 3143 3158 3172 3186 3200 3214 3229 3243 3257
230 3271 3286 3300 3314 3328 3343 3357 3371 3385 3399
240 3414 3428 3442 3456 3470 3485 3499 3513 3527 3542

FOREWORD CONVERSION TABLES
00-18 WB140PS-2N, WB150PS-2N
12
Temperature
Fahrenheit Centigrade Conversion; a simple way to convert a Fahrenheit temperature reading into a Centigrade temperature
reading or vise versa is to enter the accompanying table in the center or boldface column of figures. These figures refer to the
temperature in either Fahrenheit or Centigrade degrees. If it is desired to convert from Fahrenheit to Centigrade degrees, con-
sider the center column as a table of Fahrenheit temperatures and read the corresponding Centigrade temperature in the column
at the left. If it is desired to convert from Centigrade to Fahrenheit degrees, consider the center column as a table of Centigrade
values, and read the corresponding Fahrenheit temperature on the right.
°C °F °C °F °C °F °C °F
-40.4 -40 -40.0 -11.7 11 51.8 7.8 46 114.8 27.2 81 117.8
-37.2 .35 -31.0 -11.1 12 53.6 8.3 47 116.6 27.8 82 179.6
-34.4 -30 -22.0 -10.6 13 55.4 8.9 48 118.4 28.3 83 181.4
-31.7 -25 -13.0 -10.0 14 57.2 9.4 49 120.2 28.9 84 183.2
-28.9 -20 -4.0 -9.4 15 59.0 10.0 50 122.0 29.4 85 185.0
-28.3 -19 -2.2 -8.9 16 60.8 10.6 51 123.8 30.0 86 186.8
-27.8 -18 -0.4 -8.3 17 62.6 11.1 52 125.6 30.6 87 188.6
-27.2 -17 1.4 -7.8 18 64.4 11.7 53 127.4 31.1 88 190.4
-26.7 -16 3.2 -7.2 19 66.2 12.2 54 129.2 31.7 89 192.2
-26.1 -15 5.0 -6.7 20 68.0 12.8 55 131.0 32.2 90 194.0
-25.6 -14 6.8 -6.1 21 69.8 13.3 56 132.8 32.8 91 195.8
-25.0 -13 8.6 -5.6 22 71.6 13.9 57 134.6 33.3 92 197.6
-24.4 -12 10.4 -5.0 23 73.4 14.4 58 136.4 33.9 93 199.4
-23.9 -11 12.2 -4.4 24 75.2 15.0 59 138.2 34.4 94 201.2
-23.3 -10 14.0 -3.9 25 77.0 15.6 60 140.0 35.0 95 203.0
-22.8 -9 15.8 -3.3 26 78.8 16.1 61 141.8 35.6 96 204.8
-22.2 -8 17.6 -2.8 27 80.6 16.7 62 143.6 36.1 97 206.6
-21.7 -7 19.4 -2.2 28 82.4 17.2 63 145.4 36.7 98 208.4
-21.1 -6 21.2 -1.7 29 84.2 17.8 64 147.2 37.2 99 210.2
-20.6 -5 23.0 -1.1 30 86.0 18.3 65 149.0 37.8 100 212.0
-20.0 -4 24.8 -0.6 31 87.8 18.9 66 150.8 40.6 105 221.0
-19.4 -3 26.6 0 32 89.6 19.4 67 152.6 43.3 110 230.0
-18.9 -2 28.4 0.6 33 91.4 20.0 68 154.4 46.1 115 239.0
-18.3 -1 30.2 1.1 34 93.2 20.6 69 156.2 48.9 120 248.0
-17.8 0 32.0 1.7 35 95.0 21.1 70 158.0 51.7 125 257.0
-17.2 1 33.8 2.2 36 96.8 21.7 71 159.8 54.4 130 266.0
-16.7 2 35.6 2.8 37 98.6 22.2 72 161.6 57.2 135 275.0
-16.1 3 37.4 3.3 38 100.4 22.8 73 163.4 60.0 140 284.0
-15.6 4 39.2 3.9 39 102.2 23.3 74 165.2 62.7 145 293.0
-15.0 5 41.0 4.4 40 104.0 23.9 75 167.0 65.6 150 302.0
-14.4 6 42.8 5.0 41 105.8 24.4 76 168.8 68.3 155 311.0
-13.9 7 44.6 5.6 42 107.6 25.0 77 170.6 71.1 160 320.0
-13.3 8 46.4 6.1 43 109.4 25.6 78 172.4 73.9 165 329.0
-12.8 9 48.2 6.7 44 111.2 26.1 79 174.2 76.7 170 338.0
-12.2 10 50.0 7.2 45 113.0 26.7 80 176.0 79.4 175 347.0

WB140PS-2 pubinfok.fm 4/10/03
PRODUCT PUBLICATIONS INFORMATION
Various product Parts and Service Publications are available to all KOMATSU construction equipment
owners, including operation and maintenance manuals, parts books and service manuals.
Special publications, such as service tool, air conditioning and turbocharger service manuals are also
available as well as selected Operation and Service manuals in foreign languages.
The Publications listed below are available for this particular machine(s).
DESCRIPTION FORM NUMBER
PARTS BOOK - PAPER:
Chassis and Engine (WB140PS-2N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . BEPB021400
Chassis and Engine (WB150PS-2N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . BEPB021500
OPERATION AND MAINTENANCE MANUAL:
Chassis and Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CEAM010800
SHOP MANUAL
Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CEBM011100
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WEBM4D9801
SAFETY MANUAL
Machine specific . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BL10-3
Parts and Service Publications can only be acquired by authorized KOMATSU distributors using the
Komatsu America Corp. Extranet Literature Ordering System.
If the Extranet Literature Ordering System is not available at the distributor location, then the following
Requisition for Technical Service Publications and Service Forms can be used. Form KDC91E is shown
on the reverse side of this page. Komatsu America Corp. reserves the right to add a surcharge to all fax
orders.

REQUISITION FOR TECHNICAL SERVICE PUBLICATIONS AND SERVICE FORMS
IMPORTANT - TO ASSURE SHIPMENT OF THE CORRECT PUBLICATION(S), THE MODEL NUMBER AND
MACHINE SERIAL NUMBER MUST BE SHOWN.
KDC91E 040202 CURRENT PRICES WILL BE CHARGED
COMPLETE FORM
AND RETURN TO
DataKom Publishing Division
440 North Fairway Drive
Vernon Hills, IL 60061-8112 U.S.A.
Attn: Service Publications
Fax No. [phone]
Tel No. [phone]
SHIP TO
COMPANY NAME
PURCHASE ORDER NO.
TYPE or PRINT
ONLY
ATTN.
STREET ADDRESS ORDER DATE
CITY, STATE, ZIP CODE
COUNTRY
PHONE NO. FAX NO. SHIPPING METHOD DISTR/BRANCH CODE
QTY. PUBLICATION FORM NO. PARTS BOOK PUBLICATION
DESCRIPTION
MODEL NUMBER SERIAL NUMBER
➥
P-Paper
M-Microfiche