Komatsu PC130-7 Install guide

00-1
MACHINE MODEL SERIAL NUMBER
PC130-7 70001 and up
• This shop manual may contain attachiments and optional equipment that are not available in your
area. Please consult your local Komatsu distributor for those items you may require.
Materials and specifications are subject to change without notice.
• PC130-7 mounts the SAA4D95LE-3 engine.
For details of the engine, see the 95-3 Series Engine Shop Manual.
SEBM036301
© 2004
All Rights Reserved
Printed in Japan 04-04(02) (1)

00-2 PC130-7
CONTENTS
No. of page
01 GENERAL ................................................................................................................01-1
10 STRUCTURE AND FUNCTION.................................................................10-1
20 TESTING AND ADJUSTING.......................................................................20-1
30 DISASSEMBLY AND ASSEMBLY.............................To be issued next time
40 MAINTENANCE STANDARD......................................................................40-1
90 OTHERS ....................................................................................................................90-1
(1)

PC130-7 00-2-1
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PC130-7 20-1
Note the following when making judgements using the standard value tables for testing, adjusting, or trou-
bleshooting.
1. The standard value for a new machine given in the table is the value used when shipping the machine from
the factory and is given for reference. It is used as a guideline for judging the progress of wear after the
machine has been operated, and as a reference value when carrying out repairs.
2. The service limit value given in the tables is the estimated value for the shipped machine based on the
results of various tests. It is used for reference together with the state of repair and the history of operation
to judge if there is a failure.
3. These standard values are not the standards used in dealing with claims.
When carrying out testing, adjusting, or troubleshooting, park the machine on level ground, inset the safety
pins, and use blocks to prevent the machine from moving.
When carrying out work together with other workers, always use signals and do not let unauthorized people
near the machine.
When checking the water level, always wait for the water to cool down. If the radiator cap is removed when
the water is still hot, the water will spurt out and cause burns.
Be careful not to get caught in the fan, fan belt or other rotating parts.
20 TESTING AND ADJUSTING
(1)
STANDARD VALUE TABLE FOR ENGINE.......... 20- 2
STANDARD VALUE TABLE FOR CHASSIS........20- 3
TESTING AND ADJUSTING................................ 20-101
TROUBLESHOOTING......................................... 20-201

20-2 PC130-7
TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR ENGINE
Model name PC130-7
Engine SAA4D95LE-3
Item Measurement condition Unit Standard value Permissible value
High idling
rpm
2,350 ± 100 2,350 ± 100
Engine speed Low idling 1,100 ± 50 1,100 ± 50
Rated speed 2,200 —
Exhaust gas color During sharp acceleration Bosch
index Max. 4.5 Max. 6.5
During high idling Max. 1.0 Max. 2.0
Valve clearance
(Cooled) Intake valve mm 0.35 —
Exhaust valve 0.50 —
Compression pressure Oil temperature: 40 – 60 °C
(Engine speed) MPa
{kg/cm2}
(rpm)
Min. 2.9
{Min. 30}
(320 – 360)
2.0
{20}
(320 – 360)
Blow-by pressure Coolant temperature: Within operating range
At rated output kPa
{mmH2O} Max. 0.49
{Max. 50} 0.98 {100}
Oil pressure
Coolant temperature:
Within operating range
MPa
{kg/cm2}
At high idling (SAE30) 0.34 – 0.59
{3.5 – 6.0} 0.25 {2.5}
At high idling (SAE10W) 0.29 – 0.54
{3.0 – 5.5} 0.21 {2.1}
At low idling (SAE30) Min. 0.1
{Min. 1.0} 0.07 {0.7}
At high idling (SAE10W) Min. 0.08
{Min. 0.8} 0.07 {0.7}
Oil temperature Through speed range (In oil pan) °C 90 – 110 120
Fuel injection timing Before top dead center (BTDC) ° 6 ± 0.75 6 ± 0.75
Fan belt tension Deflection under finger pressure of
58.8 N {6 kg} mm 6 – 10 6 – 10
Air conditioner compres-
sor belt tension Deflection under finger pressure of 58.8 N {6 kg} mm 6 – 10 6 – 10
(1)
STANDARD VALUE TABLE FOR ENGINE

PC130-7 20-3
TESTING AND ADJUSTING
STANDARD VALUE TABLE FOR CHASSIS
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Engine speed
Pump relief
• Engine coolant temperature:
Within operating range
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Arm OUT relief
rpm 2,120 ± 100 2,120 ± 100
Pump relief + One-
touch power maximiz-
ing
• Engine coolant temperature:
Within operating range
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Arm OUT relief + One-touch power
maximizing switch ON
rpm 2,180 ± 100 2,180 ± 100
During auto-decelera-
tion • Engine speed: High idling
• Auto-decelerator switch: ON
• All control levers in neutral rpm 1,400 ± 100 1,400 ± 100
Control valve spool stroke
Boom control valve • Engine: Stopped
mm
8.0 ± 0.5 8.0 ± 0.5
Arm control valve IN 9.5 ± 0.5 9.5 ± 0.5
OUT 8.0 ± 0.5 8.0 ± 0.5
Bucket control valve 8.0 ± 0.5 8.0 ± 0.5
Swing control valve 8.0 ± 0.5 8.0 ± 0.5
Travel control valve 8.0 ± 0.5 8.0 ± 0.5
Control lever stroke
Boom control lever • Engine: Stopped
• Center of lever grip
• Read max. value to stroke end
(Exclude play in neutral position).
mm
85 ± 10 85 ± 10
Arm control lever 85 ± 10 85 ± 10
Bucket control lever 85 ± 10 85 ± 10
Swing control lever 85 ± 10 85 ± 10
Travel control lever 112 ± 15 112 ± 15
Play of control lever 10 ± 15 10 ± 15
Operating effort of control lever
Boom control lever • Hydraulic oil temperature:
Within operating range
• Engine speed: High idling
• Center of lever grip
• Tip of pedal
• Read max. value to stroke end N
{kg}
15.7 ± 3.9
{1.6 ± 0.4} Max. 24.5 {Max. 2.5}
Arm control lever 15.7 ± 3.9
{1.6 ± 0.4} Max. 24.5 {Max. 2.5}
Bucket control lever 12.7 ± 2.9
{1.3 ± 0.3} Max. 21.6 {Max. 2.2}
Swing control lever 12.7 ± 2.9
{1.3 ± 0.3} Max. 21.6 {Max. 2.2}
Travel control lever 24.5 ± 5.9
{2.5 ± 0.6} Max. 39.2 {Max. 4.0}
Travel control pedal 80.4 ± 20.1
{8.2 ± 2.0} Max. 107.9 {Max. 11}
(1)
STANDARD VALUE TABLE FOR CHASSIS

20-4 PC130-7
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Oil pressure
Unload pressure
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Pump outlet pressure when all levers
are in neutral
MPa
{kg/cm
2
}
2.9 ± 0.5
{30 ± 5} 2.9 ± 0.5 {30 ± 5}
Boom relief pressure
• Hydraulic oil tempera-
ture: 45 – 55 °C
• Engine speed:
High idling
• Working mode: A
• Pump outlet pressure
when measured circuit is
relieved
At normal
relief
MPa
{kg/cm
2
}
31.9
{325 } 33.3 – 36.8 {340 – 375}
At power
max. 34.8 ± 1.0
{355 ± 10} 36.3 – 39.2 {370 – 400}
Arm relief pressure
At normal
relief 31.9
{325 } 33.3 – 36.8 {340 – 375}
At power
max. 34.8 ± 1.0
{355 ± 10} 36.3 – 39.2 {370 – 400}
Bucket relief pressure
At normal
relief 31.9
{325 } 33.3 – 36.8 {340 – 375}
At power
max. 34.8 ± 1.0
{355 ± 10} 36.3 – 39.2 {370 – 400}
Swing relief pressure 28.9 ± 1.5
{295 ± 15} 28.9 – 32.9 {295– 335}
Travel relief pressure 34.8 ± 1.0
{355 ± 10} 36.3 – 39.2 {370 – 400}
Control circuit basic
pressure
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Outlet pressure of self-reducing pres-
sure valve when all levers are in neu-
tral
MPa
{kg/cm
2
}
3.23 ± 0.2
{33 ± 2} 2.84 – 3.43 {29 – 35}
LS differential pres-
sure
• Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Pump pressure - LS pres-
sure
When all
levers are
in neutral MPa
{kg/cm
2
}
2.7
{28 } 2.7 {28 }
When
travel sys-
tem runs
idle at Hi
2.2 ± 0.1
{22.5 ± 1} 2.2 ± 0.1 {22.5 ± 1}
+2.0
0
+20
0
+2.0
0
+20
0
+2.0
0
+20
0
+1.0
–0.7
+10
– 7
+1.0
–0.7
+10
– 7
(1)
STANDARD VALUE TABLE FOR CHASSIS

PC130-7 20-5
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Swing
Overrun of swing • Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Quantity of overrun of swing circle
when it stops after 1 turn
• ( ): Qty of overrun of periphery of
swing circle
deg
(mm) 75 ± 10 {730 ± 100} Max. 90 (Max. 870)
Time taken to start
swinging • Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Time taken to swing 90° and
180° after starting
90°
sec
2.9 ± 0.3 Max. 3.5
180° 4.0 ± 0.4 Max. 8.5
Time taken to swing
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Time taken to swing 5 turns after
swinging 1 turn
sec 28.6 ± 4.8 28.6 ± 5.8
Hydraulic drift of swing • Hydraulic oil temperature: 45 – 55 °C
• Engine: Stopped
• Set upper structure at 90° to machine
body on slope of 15°.
• Make match marks on inner race and
outer race of swing circle.
• Measure deviation of match marks in
15 minutes.
mm 0 0
(1)
STANDARD VALUE TABLE FOR CHASSIS

20-6 PC130-7
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Swing
Leakage from swing
motor
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Swing lock switch: LOCK
• Measure leakage for 1 minutes while
swing circuit is relieved.
l/min Max. 3 Max. 6
Travel
Travel speed (Idle run)
• Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Measure time taken to rotate
track shoe 5 turns after 1 turn.
Lo
sec
46.1 ± 9.2 46.1 ± 9.2
Hi 21.9 ± 2.2 23.1 ± 3.0
Travel speed
(Actual travel) • Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Hard and level place
• Measure time taken to travel 20
m after running up 10 m.
Lo 27.6 ± 5.1 27.6 ± 7.1
Hi 13.2 ± 1.2 13.2 ± 1.7
Travel deviation
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Travel speed: Lo
• Hard and level place
• Measure travel deviation in travel of
20 m after running up 10 m.
mm Max. 200 Max. 220
(1)
STANDARD VALUE TABLE FOR CHASSIS

PC130-7 20-7
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Travel
Hydraulic drift of travel
• Hydraulic oil temperature: 45 – 55 °C
• Engine: Stopped
• Stop machine on slope of 12 degrees
with sprocket on upper side.
• Measure hydraulic drift of travel in 5
minutes.
mm 0 0
Leakage from travel
motor
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Lock sprocket.
• Measure leakage for 1 minutes while
travel circuit is relieved.
l/min Max. 5 Max. 10
Work equipment
Hydraulic drift of work equipment
Whole work
equipment
(Hydraulic drift of tooth tip)
• Hydraulic oil temperature: 45 – 55 °C
• Level and flat place
• Bucket: Full of dirt and sand or filled
with rated load (1,080 kg)
• Level boom top, retract arm cylinder
fully, and extract bucket cylinder fully.
• Engine: Stopped
• Work equipment control lever: Neutral
• Start measuring hydraulic drift just
after setting machine and measure
every 5 minutes for 15 minutes.
mm
Max. 460 Max. 700
Boom cylinder
(Retraction of cylinder)
Max. 10 Max. 12
Arm cylinder
(Extension of cylinder)
Max. 80 Max. 90
Bucket cylinder
(Retraction of cylinder)
Max. 22 Max. 40
Work equipment speed
Boom speed • Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Measure time taken to move
bucket between RAISE stroke
end and ground touch point of
bucket.
RAISE
sec
3.7 ± 0.4 Max. 4.3
LOWER 2.6 ± 0.5 Max. 3.2
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STANDARD VALUE TABLE FOR CHASSIS

20-8 PC130-7
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Work equipment
Work equipment speed
Arm speed • Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Measure time taken to move
arm between OUT stroke end
and IN stroke end (between
starting points of cushion).
CURL
sec
3.2 ± 0.4 Max. 4.4
DUMP 3.1 ± 0.3 Max. 3.7
Bucket speed • Hydraulic oil temperature:
45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Measure time taken to move
bucket between DUMP stroke
end and CURL stroke end
CURL
sec
2.9 ± 0.3 Max. 3.7
DUMP 2.3 ± 0.2 Max. 2.9
Time lag
Boom time lag • Hydraulic oil temperature: 45 – 55 °C
• Engine speed: Low idling
• Working mode: A
• Lower boom from RAISE stroke end
and measure time taken to start rais-
ing front of machine after bucket
touches ground.
sec Max. 3.0 Max. 4.0
(1)
STANDARD VALUE TABLE FOR CHASSIS

PC130-7 20-9
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Work equipment
Time lag
Arm time lag • Hydraulic oil temperature: 45 – 55 °C
• Engine speed: Low idling
• Working mode: A
• Move IN arm from OUT stroke end
and measure time taken to start mov-
ing arm again after it is stopped.
• For measuring posture, see WORK
EQUIPMENT 6.
sec Max. 2.0 Max. 3.0
Bucket time lag • Hydraulic oil temperature: 45 – 55 °C
• Engine speed: Low idling
• Working mode: A
• Curl bucket from DUMP stroke end
and measure time taken to start mov-
ing bucket again after it is stopped.
• For measuring posture, see WORK
EQUIPMENT 7.
sec Max. 2.0 Max. 3.0
Oil leakage
Cylinder • Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Relieve cylinder to be measured or
travel circuit and measure leakage in
1 minute.
cc/min Max. 3.5 Max. 15
Center swivel joint Max. 10 Max. 50
Compound operation performance
Travel deviation in
compound operation
ofworkequipmentand
travel
• Hydraulic oil temperature: 45 – 55 °C
• Engine speed: High idling
• Working mode: A
• Travel speed: Lo
• Hard and level place
• Measure travel deviation in travel of
20 m after running up 10 m.
mm Max. 500 Max. 500
(1)
STANDARD VALUE TABLE FOR CHASSIS

20-10 PC130-7
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
PC flow control
characteristics
Time taken to swing
90° in compound oper-
ation of raising boom
and starting swinging
• Hydraulic oil temperature: 45 – 55 °C
• Engine: High idling
• Working mode: A
• Bucket: Filled with rated load
• Hard and level place
• Set arm vertically and lower back of
bucket to ground.
• Raise boom and start swinging simul-
taneously from above posture and
measure time taken to pass 90° point.
sec 4.0
(Reference value)
Pump
performance
Hydraulic pump
capacity • See graph. l/min See graph.
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STANDARD VALUE TABLE FOR CHASSIS

PC130-7 20-11
TESTING AND ADJUSTING
Model name PC130-7
Cate-
gory Item Measurement condition Unit Standard value Permissible value
Pump performance
Hydraulic pump performance
• PC-EPC current: 400 mA
• Pump speed: 2,000 rpm
aAvoid measuring near a broken point of the graph, since the error becomes large at that point.
aWhen measuring without removing the pump from the machine, if the engine speed cannot be set to the speci-
fied speed with the fuel control dial, calculate the pump discharge pressure at the specified speed from the
engine speed and pump discharge at the time of measurement.
(1)
STANDARD VALUE TABLE FOR CHASSIS
Check point Test pump discharge pressure
(MPa{kg/cm2}) Standard discharge
(l/min) Lower limit of
discharge
(l/min)
Any point P Q
(See graph) Q (See graph)

PC130-7 20-101
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING ......................................................... 20-102
TESTING AND ADJUSTING ENGINE SPEED .......................................................................................... 20-104
MEASURING EXHAUST GAS COLOR .....................................................................................................20-105
ADJUSTING VALVE CLEARANCE ........................................................................................................... 20-107
MEASURING COMPRESSION PRESSURE ............................................................................................. 20-109
MEASURING BLOW-BY PRESSURE .......................................................................................................20-110
MEASURING ENGINE OIL PRESSURE ...................................................................................................20-111
TESTING AND ADJUSTING FOR FUEL INJECTION TIMING ................................................................ 20-112
ADJUSTING ENGINE SPEED SENSOR .................................................................................................. 20-116
TESTING AND ADJUSTING FAN BELT TENSION .................................................................................. 20-117
TESTING AND ADJUSTING AIR CONDITIONER COMPRESSOR BELT TENSION ..............................20-118
MEASURING CLEARANCE OF SWING CIRCLE BEARING ....................................................................20-119
TESTING AND ADJUSTING TRACK SHOE TENSION ............................................................................ 20-120
TESTING AND ADJUSTING OIL PRESSURE IN WORK EQUIPMENT, SWING, AND TRAVEL CIRCUITS ....... 20-122
MEASURING CONTROL CIRCUIT BASIC PRESSURE ...........................................................................20-125
TESTING AND ADJUSTING OIL PRESSURE IN PUMP PC CONTROL CIRCUIT ..................................20-126
TESTING AND ADJUSTING OIL PRESSURE IN PUMP LS CONTROL CIRCUIT .................................. 20-129
MEASURING SOLENOID VALVE OUTPUT PRESSURE .........................................................................20-133
MEASURING PPC VALVE OUTPUT PRESSURE .................................................................................... 20-135
ADJUSTING PLAY OF WORK EQUIPMENT AND SWING PPC VALVES ...............................................20-136
TESTING PARTS WHICH CAUSE HYDRAULIC DRIFT OF WORK EQUIPMENT ..................................20-137
MEASURING OIL LEAKAGE ..................................................................................................................... 20-139
RELEASING RESIDUAL PRESSURE IN HYDRAULIC CIRCUIT ............................................................. 20-142
BLEEDING AIR FROM EACH PART ......................................................................................................... 20-143
TESTING PROCEDURE FOR DIODE ......................................................................................................20-146
SPECIAL FUNCTIONS OF MONITOR PANEL ......................................................................................... 20-147
PREPARATION WORK FOR TROUBLESHOOTING FOR ELECTRIC SYSTEM .................................... 20-166
PM-CLINIC SERVICE................................................................................................................................. 20-167
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TESTING AND ADJUSTING

20-102 PC130-7
TESTING AND ADJUSTING
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
Testing and adjusting item
Symbol
Part No. Part name
Q'ty
Remarks
Measuring exhaust gas
color A1 799-203-9000 Handy smoke
checker 1Pollution level: 0 – 70% (With standard
color)
(Pollution level x 1/10 C Bosch index)
2Commercially
available Smoke meter 1
Adjusting valve clearance BCommercially
available Feeler gauge 1 (Air intake side: 0.35 mm, Exhaust side: 0.50 mm)
Measuring compression
pressure C
795-502-1205 Compression gauge 1 0 – 6.9MPa {0 – 70kg/cm2}
795-502-1370 Adapter 1 For 95E-3 engine
6204-11-3880 Gasket 1
Measuring blow-by pres-
sure D799-201-1504 Blow-by checker 1 —
Measuring engine oil pres-
sure E
1799-101-5002 Hydraulic tester 1 Pressure gauge: 2.5,5.9,39.2,58.8MPa
{25,60,400,600kg/cm2}
790-261-1203 Digital hydraulic
tester 1 Pressure gauge: 58.8MPa {600kg/cm2}
2 799-401-2320 Hydraulic tester 1 Pressure gauge: 0.98MPa {10kg/cm2}
3799-401-3500 Adapter 1 Size: 06
4799-101-5220 Nipple 1 Size: 10 x 1.25mm
07002-11023 O-ring 1
Measuring fuel injection
timing F1795-102-2103 Spring pusher 1 For delivery valve method
2Commercially
available Dial gauge 1
Measuring clearance of
swing circle bearing GCommercially
available Dial gauge 1 —
Testing and adjusting oil
pressure in work equip-
ment, swing, and travel cir-
cuits H
1799-101-5002 Hydraulic tester 1 * Same as E1
790-261-1203 Digital hydraulic
tester 1
2799-101-5220 Nipple 1 * Same as E4
07002-11023 O-ring 1
Measuring control circuit
basic pressure J
1799-101-5002 Hydraulic tester 1 * Same as E1
790-261-1203 Digital hydraulic
tester 1
2799-101-5230 Nipple 1 Size: 14 x 1.5mm
07002-11423 O-ring 1
Testing and adjusting oil
pressure in pump PC con-
trol circuit K
1799-101-5002 Hydraulic tester 1
* Same as H (Only quantity is different)
790-261-1203 Digital hydraulic
tester 1
2799-101-5230 Nipple 2
07002-11423 O-ring 2
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
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