CEBM014600
LOGGING EXCAVATOR SERIAL NUMBERS
and UP
This material is proprietary to Komatsu America Corp. and is not to be reproduced, used, or disclosed except in accordance with written authorization from Komatsu America Corp. 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 recommended that customers contact their distributor for information on the latest revision.
April 2005 Printed in USA
Copyright 2005 Komatsu DataKom Publishing Division 00-1
FOREWORD 12
CONTENTS
CONTENTS
00
01
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
10
STRUCTURE, FUNCTION AND MAINTENANCE STANDARD . . . . . . . . . . . . . . . . . . . . 10-1
20
TESTING, ADJUSTING AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
30
DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
90
OTHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1
00-2
PC270LL-7L
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BEPB041900 OPERATION AND MAINTENANCE MANUAL: Chassis and Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CEAM014700
SHOP MANUAL Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CEAM014600 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .SEBM010020 SAFETY MANUAL Machine specific . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .HE03-2
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.
PC270LL-7Lpubinfok.fm
4/25/05
REQUISITION FOR TECHNICAL SERVICE PUBLICATIONS AND SERVICE FORMS COMPLETE FORM AND RETURN TO
DataKom Publications and Training Division 440 North Fairway Drive Vernon Hills, IL 60061-8112 U.S.A. Attn: Service Publications Fax No. (847) 970-4186 Tel No. (847) 970-5887
COMPANY NAME PURCHASE ORDER NO.
SHIP TO ATTN.
TYPE or PRINT ONLY
STREET ADDRESS
ORDER DATE
CITY, STATE, ZIP CODE COUNTRY
PHONE NO.
FAX NO.
SHIPPING METHOD
DISTR/BRANCH CODE
IMPORTANT - TO ASSURE SHIPMENT OF THE CORRECT PUBLICATION(S), THE MODEL NUMBER AND MACHINE SERIAL NUMBER MUST BE SHOWN. QTY.
PUBLICATION FORM NO.
KDC91E 071403
PARTS BOOK P-Paper M-Microfiche
PUBLICATION DESCRIPTION
MODEL NUMBER
CURRENT PRICES WILL BE CHARGED
SERIAL NUMBER
FOREWORD
SAFETY
12 SAFETY
SAFETY NOTICE
00
00
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 accompanying these symbols should always be followed carefully. If any dangerous situation arises or may possibly arise, first consider safety, and take the necessary actions to deal with the situation.
GENERAL PRECAUTIONS
00
PREPARATIONS FOR WORK
00
Mistakes in operation are extremely dangerous. Read the OPERATION & MAINTENANCE MANUAL carefully BEFORE operating the machine.
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.
1.
Before carrying out any greasing or repairs, read all the precautions given on the decals which are fixed to the machine.
2.
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.
Before starting work, lower blade, ripper, bucket or any other work equipment to the ground. If this is not possible, 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.
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.
PC270LL-7L
PRECAUTIONS DURING WORK
00
1.
When removing the oil filler cap, drain plug or hydraulic pressure measuring plugs, loosen them slowly to prevent 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 (-) terminal first.
00-3
FOREWORD
SAFETY
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 position 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.
Never use flammable liquids to clean part. Always use approved non-flammable solvents to clean 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 correctly. 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 measurements. 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. 15. When making repairs or adjustments on electronically-controlled engines, avoid any physical contact with injection system wiring harness while engine is running. Due to the high voltage and amperage in the system, serious injury may result.
00-4
PC270LL-7L
This is the sample of the manual Click on the download link for complete manual
Download Link
FOREWORD 12 GENERAL
GENERAL 00
This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand 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 completion 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.
PC270LL-7L
00-5
FOREWORD
HOW TO READ THE SHOP MANUAL
12 HOW TO READ THE SHOP MANUAL
VOLUMES
00
Shop manuals are issued as a guide to carrying out repairs. They are divided as follows: Chassis volume: Engine volume:
Issued for every machine model Issued for each engine series
00
REVISIONS
00
Revised pages are shown at the LIST OF REVISED PAGES between the title page and SAFETY page.
SYMBOLS
00
Electrical volume: Each issued as one to cover all models Attachment volume: Each issued as one to cover all models
So that the shop manual can be of ample practical use, important places for safety and quality are marked with the following symbols.
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.
Symbol
DISTRIBUTION AND UPDATING
FILING METHOD
2.
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. Caution necessary when selecting hoisting wire or when working posture is important, etc.
Tightening torque
Places that require special attention for tightening torque during assembly.
Coat
Places to be coated with adhesives 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.
00
See the page number on the bottom of the page. File the pages in correct order. 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.
Remarks
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.
1.
Item
Additional pages: Additional pages are indicated by a hyphen (-) and numbered after the page number. File as in the example. Example:
10-4 10-4-1 10-4-2
Added pages
10-5
REVISED EDITION MARK When a manual is revised, an edition mark ( recorded on the bottom outside corner of the pages.
00-6
00
…) is
PC270LL-7L
FOREWORD
HOISTING INSTRUCTIONS
12 HOISTING INSTRUCTIONS
00
HOISTING
can result. Hooks have maximum strength at the middle portion.
00
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 indicated clearly with the symbol
1. 2.
If a part cannot be smoothly removed from the machine by hoisting, the following checks should be made: Check for removal of all bolts fastening the part to the relative parts. Check for existence of another part causing interface with the part to be removed.
WIRE ROPES 1.
3.
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 dangerous accident
00
Use adequate ropes depending on the weight of parts to be hoisted, referring to the table below:
Wire ropes (Standard “Z” or “S” twist ropes without galvanizing) Rope diameter
2.
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
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 forming 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 hoisting 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°
The allowable load value is estimated to be 1/6 or 1/7 of the breaking strength of the rope used. 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
PC270LL-7L
00-7
FOREWORD
COATING MATERIALS
12 COATING MATERIALS
00
The recommended coating materials prescribed in the shop manuals are listed below.
Adhesives
Category
Code
Part No.
Quantity
Container
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 purposes for bolts and plugs.
LT-3
790-129-9060 (Set of adhesive and hardening agent)
Adhesive: 1 kg Hardening agent: 500 g
Can
LT-4
790-129-9040
250 g
Polyethylene container
Holtz MH 705
790-126-9120
75 g
Tube
Gasket sealant
Three bond 1735
00-8
Main applications, features
179-129-9140
2g
Used as adhesive or sealant for metal, glass or plastic.
Used as sealant for machined holes. Used as heat-resisting sealant for repairing engine.
Polyethylene container
Quick hardening type adhesive. Cure time: within 5 sec. to 3 min. Used mainly for adhesion of metals, rubbers, plastics and woods.
Aronalpha 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, plastics and metals.
Loctite 648-50
79A-129-9110
50 cc
Polyethylene container
Features: Resistance to heat, chemicals Used at joint portions subject to high temperature.
LG-1
790-129-9010
200 g
Tube
Used as adhesive or sealant for gaskets and packing of power train case, etc.
Can
Features: Resistance to heat Used as sealant for flange surfaces and bolts at high temperature locations; used to prevent seizure. Used as sealant for heat resistant gasket for at high temperature locations such as engine pre-combustion chamber, exhaust pipe.
LG-3
790-129-9070
1 kg
PC270LL-7L
FOREWORD Category
Code
LG-4
LG-6
Part No.
790-129-9020
790-129-9080
09940-00011
Quantity
Container
Main applications, features
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.
1 kg
Polyethylene container
Used as sealant for various threads, pipe joints, flanges. Used as sealant for tapered plugs, elbows, nipples of hydraulic piping.
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.
250 g
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.
LM-G
09940-00051
60 g
Can
Used as lubricant for sliding parts (to prevent 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.
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 SYG2160CNCA
Various
Various
Used for normal temperature, light load bearing at places in contact with water or steam.
400 g (10 per case)
Belows type
Molybdenum disulphide lubricant
Grease
Molybdenum disulphide lubricant
Gasket sealant
LG-5
COATING MATERIALS
PC270LL-7L
SYG2-400M
Used for places with heavy load.
00-9
FOREWORD
STANDARD TIGHTENING TORQUE
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
lbf ft
6
10
13.2 ± 1.4
9.2 ± 1.03
8
13
31.4 ± 2.9
23.1 ± 2.1
10
17
65.7 ± 6.8
48.4 ± 5.0
12
19
112 ± 9.8
82.6 ± 7.2
14
22
177 ± 19
130.5 ± 14.0
16
24
279 ± 29
205.7 ± 21.3
18
27
383 ± 39
282.4 ± 28.7
20
30
549 ± 58
404.9 ± 42.7
22
32
745 ± 78
549 ± 57.5
24
36
927 ± 98
683 ± 72.2
27
41
1320 ± 140
973.5 ± 103.2
30
46
1720 ± 190
1268.6 ± 140.1
33
50
2210 ± 240
1630.0 ± 177.0
36
55
2750 ± 290
2028.2 ± 213.8
39
60
3280 ± 340
2419.2 ± 250.7
Thread diameter of bolt
Width across flats
mm
mm
Nm
lbf ft
6
10
7.85 ± 1.95
5.7 ± 1.4
8
13
18.6 ± 4.9
13.7 ± 3.6
10
14
40.2 ± 5.9
29.6 ± 4.3
12
27
82.35 ± 7.85
60.7 ± 5.7
00-10
PC270LL-7L
FOREWORD
STANDARD TIGHTENING TORQUE
12 TIGHTENING TORQUE OF HOSE NUTS
00
Use these torques for hose nuts. Thread diameter
Width across flat
mm
mm
Nm
lbf ft
02
14
19
24.5 ± 4.9
18.0 ± 3.6
03
18
24
49 ± 19.6
36.1 ± 14.4
04
22
27
78.5 ± 19.6
57.8 ± 14.4
05
24
32
137.3 ± 29.4
101.2 ± 21.6
06
30
36
176.5 ± 29.4
130.1 ± 21.6
10
33
41
196.1 ± 49
144.6 ± 36.1
12
36
46
245.2 ± 49
180.8 ± 36.1
14
42
55
294.2 ± 49
216.9 ± 36.1
Nominal No.
Tightening torque
TIGHTENING TORQUE OF SPLIT FLANGE BOLTS
00
Use these torques for split flange bolts. Thread diameter
Width across flat
Tightening torque
mm
mm
Nm
lbf ft
10
14
65.7 ± 6.8
48.4 ± 5.0
12
17
112 ± 9.8
82.6 ± 7.2
16
22
279 ± 29
205.7 ± 21.3
TIGHTENING TORQUE FOR FLARED NUTS
00
Use these torques for flared part of nut.
Thread diameter
Width across flat
mm
mm
Nm
lbf ft
14
19
24.5 ± 4.9
18.0 ± 3.6
18
24
49 ± 19.6
36.1 ± 14.4
22
27
78.5 ± 19.6
57.8 ± 14.4
24
32
137.3 ± 29.4
101.2 ± 21.6
30
36
176.5 ± 29.4
130.1 ± 21.6
33
41
196.1 ± 49
144.6 ± 36.1
36
46
245.2 ± 49
180.8 ± 36.1
42
55
294.2 ± 9
216.9 ± 36.1
PC270LL-7L
Tightening torque
00-11
FOREWORD
ELECTRIC WIRE CODE
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 Nominal number
00
Copper wire Number of Dia. Of strand Cross section strands (mm) (mm)
Cable O.D. (mm)
Current rating (A)
Applicable circuit
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
CLASSIFICATION BY COLOR AND CODE
1
Circuits Classification Primary
Priority
2
4
5
6
00-12
Auxiliary
3
00
Charging
Ground
Starting
Lighting
Instrument
Signal
Other
Code
W
B
B
R
Y
G
L
Color
White
Black
Black
Red
Yellow
Green
Blue
Code
WR
—
BW
RW
YR
GW
LW
Color
White & Red
—
Black & White
Red & White
Yellow & Red
Green & White
Blue & White
Code
WB
—
BY
RB
YB
GR
LR
Color
White & Black
—
Black & Yellow
Red & Black
Yellow & Black
Green & Red
Blue & Red
Code
WL
—
BR
RY
YG
GY
LY
Color
White & Blue
—
Black & Red
Red & Yellow
Yellow & Green
Green & Yellow
Blue & Yellow
Code
WG
—
—
RG
YL
GB
LB
Color
White & Green
—
—
Red & Green
Yellow & Blue
Green & Black
Blue & Black
Code
—
—
—
RL
YW
GL
—
Color
—
—
—
Red & Blue
Yellow & White
Green & Blue
—
PC270LL-7L
FOREWORD
CONVERSION TABLES
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 , then draw a horizontal line from B. Locate the number 5 in the row across the top, take this as C. Take the point where the two lines cross as . This point inches. Therefore, 55 millimeters = 2.165 inches. 2.
, then draw a perpendicular line down from
.
.
gives the value when converting from millimeters to
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.
Millimeters to inches
1 mm = 0.03937 in
0
1
2
3
4
5
6
7
8
9
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
PC270LL-7L
00-13