PDF Service Manual Link-Belt 240 LX Excavator - 13 MB
Perform in-depth repairs and maintenance on your Link-Belt 240 LX excavator with this complete service manual.
This guide is packed with detailed instructions, specifications, and schematics for every system on the machine.
It is an indispensable resource for any technician dedicated to keeping this powerful excavator running at peak performance.
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--- Page 1 ---
MODEL ________________
240LX
SERIES ________________
LX Series
BOOK NO. ________________
1033
SERIAL NO. ________________
MACHINE SERIAL NUMBER
The machine serial number is stamped on the serial number plate which is
located at the front of the machine on the right side of the operator’s cab
platform. The serial number should always be furnished when ordering parts
for the machine or when corresponding with the distributor or factory
concerning the machine. Providing the serial number is the only way of
ensuring the correct parts and/or information can be furnished.
In the event the serial plate is not readable a number is stamped on the
upper revolving frame which can be used to identify the machine. The
number is stamped just below the boom and between the boom hoist
cylinder mounting lugs.
LBX Company, LLC Shop Manual
--- Page 3 ---
1001-7
Torque Table
Tighten cap screws and nuts according to the table below if there are no other special instructions.
Cap Screw Name Size (Size) M6 M8 M10 M12 M14 M16 M18 M20
[in.] 0.39 0.51 0.67 0.75 0.87 0.95 1.06 1.18
Spanner
[mm] 10 13 17 19 22 24 27 30
Cap Screw
[lb-ft] 5.1 14.5 29.0 43.4 72.5 116.0 144.6 202.4
Tightening
torque [Nm] 6.9 19.6 39.2 58.8 98.1 157.2 196.0 274.0
[in.] 0.20 0.24 0.32 0.39 0.47 0.55 0.55 0.67
Spanner
Socket [mm] 5 6 8 10 12 14 14 17
Head Cap
Screw Tightening [lb-ft] 6.5 15.9 31.1 57.8 86.8 130.1 180.8 253.1
torque
[Nm] 8.8 21.6 42.1 78.4 117.6 176.4 245.0 343.0
Cre 7-27690LX Issued 11-01
--- Page 4 ---
1002-9
Main control valve
Five section main control valve for arm, boom acceleration, swing, option and RH travel.
Four section main control valve for arm acceleration, bucket, boom and LH travel.
Load holding valve for boom and arm.
Swing
Fixed flow, axial piston motor.
Automatic disc brake.
Upperstructure swing speed..........................................................................................................................10.4 rpm
Swing torque............................................................................................................................................. 55130 ft.lbs
Tail swing ......................................................................................................................................................... 9 ft 7 in
Displacement................................................................................................................................................. 8.9 cu in
Work output .....................................................................................................................................................48 gpm
Reduction ratio .................................................................................................................................................22.097
Braking torque .......................................................................................................................................................... ≥ 592.6 lb-ft
Minimum brake pressure ................................................................................................................................. 421 psi
Travel
Two-speed, axial piston motor.
Automatic disc brake.
Slow speed .....................................................................................................................................................2.2 mph
Fast speed......................................................................................................................................................3.4 mph
Gradeability .................................................................................................................................................70% (35°)
Tractive force ............................................................................................................................................... 43010 lbs
Displacement......................................................................................................................................... 10.3/6.1 cu in
Work output .....................................................................................................................................................56 gpm
Reduction ratio .................................................................................................................................................43.246
Braking torque (including reducer) .............................................................................................................15368 lb-ft
Number of turns at the sprockets (10 turns)
Mode "S", fast speed............................................................................................................................ 13±0.6 sec.
Mode "S", slow speed ....................................................................................................................... 21.4±0.7 sec.
Permitted deviation in travel over a distance of 20 m
Mode "H", full speed..................................................................................................................................... 39.4 in
Undercarriage
One-piece undercarriage with welded components.
Lubricated rollers and idler wheels.
Grease type track tension.
Ground pressure
with 23.6 in track pads ............................................................................................................................... 6.81 psi
with 27.5 in track pads ............................................................................................................................... 6.09 psi
with 31.4 in track pads ............................................................................................................................... 5.36 psi
Track tension .....................................................................................................................................11.02 to 11.81 in
Attachment
Break-out bucket (standard) ......................................................................................................................... 35970 lbf
Break-out bucket (higher pressure) .............................................................................................................. 38890 lbf
Penetration force
Crowd force (standard)................................................................................................................................. 25850 lbf
Crowd force (higher pressure)...................................................................................................................... 28100 lbf
Cre 7-29360-24LX Issued 11-01
--- Page 5 ---
1002-19
7. Bucket cylinder foot/Arm
a c Dimension
Marking
(in)
b
Standard 4.56
a
Limit 4.80
Ød Standard 4.13
b
Limit 4.05
Standard 0.01 to 0.11
c (a - b)
Limit Shims
Standard 3.14
Ø d (pin)
Limit 3.11
CS01B528 Standard 3.14
Ø d (ring)
Limit 3.20
8. Connecting rod/Arm
Dimension
Marking
(in)
c Standard 1.57
a
Limit 1.49
Standard 12.4
b
b Limit 12.3
Standard 0.03 to 0.05
c (play)
Limit Shims
Standard 3.14
a Ø d (pin)
Limit 3.11
Ød Standard 3.14
Ø d (ring)
Limit 3.20
CS01B529
9. Compensator/Bucket
Ød Dimension
Marking
(in)
Standard 12.4
c a
Limit 12.7
Standard 12.4
b
Limit 12.3
b a Standard 0.03 to 0.13
c (play)
Limit Shims
Standard 3.54
Ø d (pin)
Limit 3.50
Standard 3.54
Ø d (ring)
Limit 3.60
CS01B530
Cre 7-29360-24LX Issued 11-01
--- Page 6 ---
2000-5
STEP 14 STEP 16
CD00J040 CD00J042
Label and disconnect the connectors to the electronic Label and disconnect the electrical connections to
regulator and disconnect the fuel flow regulation the alternator.
resistance.
NOTE: If the machine is equipped with air
STEP 15 conditioning, remove the compressor mounting
hardware and move the compressor away from the
engine.
STEP 17
Remove all the clips, etc, which fasten the electrical
harnesses to the engine and move the harnesses out
of the way.
STEP 18
CD00J041
Remove the hose connecting the turbo-charger to the
air filter.
CD00J043
Install a suitable lifting device on the engine lifting
eyes (for the weight of the engine, see Section 1002).
Cre 7-28230LX Issued 11-01
--- Page 7 ---
3001
Section
3001
REMOVAL AND INSTALLATION
OF THE FUEL TANK
Copyright 2001 Link-Belt
Printed in USA
Link-Belt Cre 7-27970LX November 2001
--- Page 8 ---
4001-5
This page is intentionally left blank
Cre 7-28250-24LX Issued 11-01
--- Page 9 ---
4001-15
Working Mode Selection
1) Circuit configuration
1 4 6
5
8
2
7
9
3
CS00F505
2) Timing diagram
Contact 24V
switch 0V
b
1
c
d
2
Working
H L S H AUTO H AUTO H
mode
a
1. Working mode switch 6. Engine electronic control box
2. Automatic mode switch 7. Electronic acceleration
3. Instrument panel 8. Engine
4. Main electronic control box 9. SERIES communication
5. Proportioning valve
Cre 7-28250-24LX Issued 11-01
--- Page 10 ---
4001-25
Automatic Engine Warm-up
1) Circuit configuration
3 7 8
2 4 6
9
1
5
10
CS00F515
1. Instrument panel 6. Engine throttle control
2. Return to idle control 7. Engine electronic control box
3. Main electronic control box 8. Engine
4. Pilot pressure switch 9. Engine coolant temperature sending unit
5. Travel pilot pressure switch 10. Electronic acceleration
2) Operation
1. When the engine is started, if the coolant solution 4. If one of the above conditions is not present, the
temperature is equal to or lower than 122°F, the automatic engine warm-up does not operate. To
main electronic control box (3) transmits an perform the engine warm-up again, the engine has
automatic engine warm-up signal to the engine to be shut down and re-started.
electronic control box (7).
5. When automatic engine warm-up is operating,
2. The engine electronic control box (7) manages the "AUTO WARM UP" is displayed on the control
automatic engine warm-up. screen (LCD).
3. Automatic engine warm-up conditions:
- Coolant solution temperature (9) equal to or
lower than 122°F.
- Pilot pressure switch (4) and travel pilot
pressure switch (5) not on.
- Return to idle control (2), not on.
- Position of engine throttle control (6),
unchanged.
- Engine speed not higher than 1800 rpm for
3 minutes.
Cre 7-28250-24LX Issued 11-01
--- Page 11 ---
4001-35
Swing Brake
1) Circuit configuration
2
5
3
6
7
8
10
9 11
1 4
CS00F503
1. Instrument panel 7. Travel pressure switch
2. Swing brake switch 8. Pressure transducer P1
3. Starter motor switch 9. Pressure transducer P2
4. Main electronic control box 10. Swing brake
5. Swing pilot pressure switch 11. Swing brake solenoid valve
6. Pilot pressure switch
2) Swing brake control operation
When the swing brake switch (2) is operated, the red While the swing is locked, the transistor OUT 2
LED comes on and the swing brake locks. output is activated and the swing brake (10) is
locked.
When the swing brake switch is operated again, the
red LED goes out, the swing brake unlocks and The swing brake remains in the previous state even
changes to automatic control (see paragraph 4). when the ignition is switched off.
Cre 7-28250-24LX Issued 11-01
--- Page 12 ---
4001-45
ON
8 OFF 221
ON
7 OFF 217.4
ON
Water temperature
6 OFF 212
ON
5 OFF 206.6
gauge bar
ON
4 OFF 179.6
ON
3 OFF 170.6
ON
2 OFF 122
1
104 122 140 158 176 194 212 230
Water temperature (°F)
2) Operation
A. The engine water temperature sending unit (5)
sends a signal to the engine electronic control box
(3).
B. The engine electronic control box (3) sends the
converted signal to the main electronic control box
(2) via the CAN connection (8).
C. The main electronic control box (2) calculates the
number of bars to display and transmits the
information to the water temperature gauge (6) via
the Series connection (7).
D. When the 8th bar on the water temperature gauge is
displayed, the message “OVER HEAT” appears on
the instrument panel control screen (1) and the
audible warning device sounds.
Cre 7-28250-24LX Issued 11-01
--- Page 13 ---
4001-55
Diagnostic Code
1. Detection of engine failures DIAG1
E: Failure code
DIAG MODE II H E 0000
1
E 0015 E 0000
E 0000 E 0000
E 0000 E 0000
Failure code
E0000: No defect
E0015: Engine water temperature sending unit
E0016: Fuel temperature sending unit
E0025: Fuel flow regulating resistance
E0031: Linear motor control circuit in electronic regulator
E0032: Electronic regulator rack position detector
E0041: Electronic regulator engine speed receiver
E0042: Engine speed detector
Example: In the screen above, there is a defect in the engine water temperature sender.
2. Previous failures in the engine DIAG2
E: Failure code
DIAG MODE II H E 0000
2
E 0032 E 0000
E 0016 E 0000
E 0000 E 0000
Example: The screen above shows that there is a defect in the electronic regulator rack position detector (0032)
and in the fuel temperature detector (0016).
Cre 7-28250-24LX Issued 11-01
--- Page 14 ---
4001-65
EXCAVATOR MODEL SELECTION PROCEDURE
The model of excavator is selected after reinitializing 4. Press the travel mode switch until the required
the machine code or replacing an electronic control destination code is displayed.
box.
Destination Pressure
1. Starter key switch ON, the screen below appears destination T° unit
code unit
and "?" for machine is selected:
North
1 psi °F
America
MACHINE : SH ? -3
5. Press the work mode switch. The screen below
appears and "?" for language is selected.
TERRITORY : ? LANGUAGE : ?
CONT. P / N KHR2668 MACHINE : SH0120- 3
2. Press the travel mode switch until the required TERRITORY : 1 LANGUAGE : ?
machine code is displayed.
CONT. P / N KHR2668
MACHINE CODE MACHINE MODEL
SH0120 130LX 6. Press the travel mode switch to display the required
SH0150 160LX language:
0 = Japanese
SH0180 Not used
1 = English
SH0200 210LX 2 = Thai
SH0220 240LX 3 = Chinese
4 = German
SH0250 Not used
5 = French
SH0300 Not used 6 = Italian
SH0400 Not used 7 = Spanish
8 = Portuguese
SH0800 Not used
9 = Dutch
10 = Danish
11 = Norwegian
MACHINE : SH0120- 3 12 = Swedish
13 = Finnish
TERRITORY : ? LANGUAGE : ? 14 = Icons
CONT. P / N KHR2668
MACHINE : SH0120- 3
3. Press the work mode switch. The screen below
TERRITORY : 1 LANGUAGE : 1
appears and "?" for territory is selected.
CONT. P / N KHR2668
MACHINE : SH0120- 3
Example:
TERRITORY : ? LANGUAGE : ?
The screen above corresponds to a 130LX model
excavator for North America in English.
CONT. P / N KHR2668
Cre 7-28250-24LX Issued 11-01
--- Page 15 ---
4001-75
Troubleshooting Cause Action
1. The 8 bars on the coolant temperature bar-graph are displayed.
Starter key switch ON
The temperature of the
temperature sending
unit (coolant) is
abnormal compared to
maintenance
YES
assistance CHK1
(comparison between
the real temperature
and the indicated
temperature).
See coolant
temperature on CHK1
WT. Measure the real
temperature
Check problem code
E0015 for the coolant
temperature sending
unit with the
maintenance diagnostic
(DIAG 1)
YES
Disconnect the coolant NO Coolant
Change the
temperature sending temperature
temperature
unit connector to sending unit
sending unit
measure the resistance defective
Disconnect connectors
Bad
CN24 and CNAO to
connection Clean the
measure the resistance NO on the temperature
between the female
YES temperature sending unit
terminals PL and BP.
sending unit connecting
(Refer to the table
connector terminal
below for the
(coolant)
resistances).
Disconnect connectors
CN7 and CNAO to
measure the resistance
NO Bad Clean
between the female
YES connections connections
terminals PL and BP.
on CN24 CN24
(Refer to the table
below for the
resistances).
Change main
Main
electronic
electronic
control box or
control box
clean the
YES defective or
connecting
bad CN7 and
terminals on
CNAO
CN7 and
connections