PDF Service Manual Liebherr R9350 Hydraulic Excavator - 8 MB
This is the complete service manual for the massive Liebherr R9350 hydraulic excavator.
This highly detailed manual is designed for qualified service technicians and contains all the procedures for maintenance, repair, and overhaul of this mining-class machine.
It covers every system, including the engine, hydraulics, and electronics, providing the technical data needed to keep this powerful excavator operating at peak efficiency.
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Service manual
en
Service manual
Hydraulic excavator
R9350
from serial number 30617
Document identification
Order number: 11212899
Version: 0 / 2019
Valid for: R9350 from serial number 30617
Author: LEC - Technical documentation department
Product identification
Manufacturer: Liebherr-Mining Equipment Colmar SAS
Type: R9350
Type no.: 1369
Conformity:
Address
Liebherr-Mining Equipment Colmar SAS
49 rue Frédéric Hartmann
CS 50038,
Sunday, 06.October 2019 F-68025
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Service Manual
Welding
Beginning with a material thickness of ¼ (8mm), butt welds must be made in several layers. The
weld is applied in several beads. Wide butt welds are filled with several side beads, with the last layer
covering the center. The electrode should melt evenly without creating burrs and peaks. The valley
or crater, which is created when changing electrodes must be filled in and overlapped with the next
electrode. To prevent cracks in those craters, care must be taken that they are properly filled.
If the crack extends towards the outer edge of the material (pos. C), slag may be trapped or burn
holes may be created. To prevent this, the following aid may be used : tack a piece of sheet of metal
to the outer edge of material.
The welding seam begins now at the sheet metal in the direction of the arrow (pos. C). After the weld-
ing is completed, the sheet metal is removed and the edge of the material is ground smooth. The weld
must cool off slowly and should therefore be protected from rain and wind.
4.3.3 Reinforcement of the welding seam
If the crack of the material is due to an oveload or abuse, a reinforcement plate should be welded
over the crack. The selection of the correct reinforcement plate is based on the construction and load
factors of the component to repair.
For this reason, only general recommendations can be made as to the size and shape of the rein-
forcement plates.
4.3.4 General application of reinforcement plates
Shape of reinforcement plates
Fig. 5 shape of reinforcement plates
The crossover or connection between the reinforced and not reinforced part should be as gradual as
possible. This means that the size of the plate should be selected in such a way that new or unac-
ceptable high stress in the repaired parts are avoided. Plates with sharp corners (such as a rectan-
gular plate) should not be used.
Suitable reinforcement plate with high tensile strenght (pos. D).
Suitable reinforcement plate against bending and alternating loads (pos. E).
Plate thickness
The thickness of the reinforcement plate should be up to 2/3 (66%) of the thickness of the material to
be reinforced.
Plate quality
The yield and tensile strenght of the reinforcement plate should be equal to the material to be rein-
forced.
Plate installation
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Service manual
Component lifting
2 Component lifting
2.1 Lifting precautions
Obey all lifting precautions given in the Operating manual (which is included in the chapter "Op-
erating maintenance" of this Service manual).
2.2 Uppercarriage parts
2.2.1 Informations in Safe Work Procedures
For lifting information about the following parts, refer to the corresponding Safe Work Procedure in
the chapter 2 of this Service Manual:
– diesel engine (6050kg wet),
– splitterbox (2150kg),
– hydraulic pumps;
• double working pump (670kg),
• combination swing pump (212kg),
• double cooling pump (180kg),
– valve bank (3720kg complete with valve blocs, filters, accumulators and piping),
– swing gear (1175kg complete with motor and brake),
– battery box (complete with batteries).
2.2.2 Informations on transport drawings
For lifting information about the following parts, refer to the corresponding transport drawing given in
the Operating manual (see chapter 4 "Operating maintenance" of this Service Manual):
– PowerPack,
– counterweight,
– rotating deck,
– hydraulic tank,
– fuel tank,
– cab,
– cab elevation.
2.2.3 Coupling
– outer member: 113kg / mass moment of inertia: 3,2kgm²
– inner member: 35kg / mass moment of inertia: 0,4kgm²
Screw the lifting lungs in the threads indicated below.
Do not lift total mass on one lifting appliance only.
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Service manual
Yes Value
Step Description Tools and remarks
/No
04 Check the B14 hydraulic oil level Field Grade Capacitance Dec-
signal between pins 1 and 2 on X722. ade Box.
X722 must be connected. If not,
Low level: 1000 Ohms. you have an error code.
05 Check and adjust air pressure sensor Do this check only for sensor
B38 at 0,2 bar with manual air outlet type of figure «B38 setting "1"».
valve opened to atmosphere. Close If B38 setting is "2", no check
valve when adjustment is completed. must be done.
06 Check the Y10_1 fan solenoid valve, Multimeter
with S23 and S74 on. You must read I=0mA on X77, on
Between pins 3 and 4 of X77. A1019 in E1005.
07 Check the Y10_2 fan solenoid valve, S23: «Manu» (control board)
with S23 and S74 on. S74: «Flow» (control board)
Between pins 1 and 2 of X77.
Hydraulic tank check Check operated by Signature
Date:
3.6.6 Check of the service trap and the ladder
Caution!
As the service trap cylinder can contain air, the service trap can go down quickly.
Fig. 15 Service trap Fig. 16 E1022_2 connection box trap control
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Service manual
Yes
Step Description Value Tools and remarks
/No
01 Check the coding information dis- It must match the machine
played at ignition or in Menu «Info sys- model. Pay attention to the
tem». coding bridges on X1111 and to
the coding plug.
02 Check the analog sensor values on Values must be between 3 and
the main screens: 21mA. If not, «- - -» will be dis-
– B69/B71 (pressure P1/P2) played.
– B50-1/B50-2 (level P1/P3) Precise values can be seen in
Menu «Check» in service view.
– B184 (pilot pressure)
03 Check the «Pause time» parameters Parameters can be adjusted in
for each pump. Menu «Set pause time» with
green or red key.
04 Check «Set max pressure» parame- Parameters can be adjusted in
ters. Menu «Set max Press» with key
(green or red) connected.
05 Check for active error codes and solve Menu «Active error».
the errors.
06 Check B69/B71 adjustment. Refer to Fig. «B69/B71 adjust-
ment for greasing system Ver-
sion C».
Check of parameters Version C Check operated by Signature
Check of greasing function
Caution!
To do this check, diesel engine must run at least at 1400 RPM.
Yes
Step Description Value Tools and remarks
/No
01 Start a grease cycle for P1. Push «Cycle P1» button.
P1 state in «ON», on left display.
02 Check that the greasing time stops Pressure must be at «max. pres-
when pressure is at «max pressure». sure» before countdown is at 0s.
03 Check that P1 pause time is dis- P1 state is «OFF».
played.
04 Make sure that there is no active error Menu «Active error».
code.
05 Do the steps 01 to 04 for P2, if P2 is
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installed.
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Service manual
Fig. 46 Secondary valves adjustment on valve blocks VBx
To adjust the secondary valves on backhoe attachment:
Install a 600 bar pressure gauge on the test point P.
Disconnect the connector X82 to deactivate the attachment proximity switches.
Tighten completely the primary valve on the valve block and loosen by a quarter turn.
Start the Diesel engine and set the engine speed to 1800 ±50 RPM.
Actuate the related movement and keep it actuated.
Loosen the locknut and turn the adjustment screw SPRV until you get the correct pressure on P.
Tighten the locknut.
Connect back the connector X82.
Adjust the primary valve again.
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Service manual
Standard adjustment
Fig. 71 Adjustment components on track tensioning block KSB
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Non-Destructive Test (NDT) Service manual
Structural inspection - Backhoe Attachment
Machine serial N°: Machine hours: Travel hours: Completed by: Date:
Bucket Article N°: Index N°:
Serial N°: Component hours:
Find the defect coordinates on the grid and report them in the following table.
(Mark the following options: location a, b, c or d; defect longitudinal, perpendicular to the seam direction and/or on
the plate or in another position.
Defect Side of the Details of the Picture N°
coordinates defect(s) R defect(s):
or L (a),(b),(c),(d) or
other
Do a description of the defect(s):
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Service manual Operating manual
4.50: Operating manual
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Operating manual Safety instructions
Safety Instructions
task.
Only use attachment or special tool approved by Liebherr.
Only operate the attachment or the special tool with closed windshield and with a
front protective grid.
Only operate the attachment or the special tool with closed door.
Do not clean the ground with the special tool.
Make sure that the special tool works in its specified limits. For more information,
also refer to the Operators Manual of the tool manufacturer.
Safe use of a hydraulic hammer or a hydraulic ripper
According to the severity of the application, the use of a hydraulic hammer or a
hydraulic ripper can result in vibrations, shocks or stresses which are higher than
in normal use. It may reduce the expected lifetime of structures and/or compo-
nents.
The hydraulic hammer or the hydraulic ripper must be selected with particular
care. When using a hydraulic hammer or a hydraulic ripper not permitted by Lieb-
herr, warranty for steel structures and machine components will be ceased.
Before beginning breaking tasks, position the machine on firm and level ground.
Use a hydraulic hammer or a hydraulic ripper designed exclusively for breaking
stone, concrete and other breakable materials.
Only operate the hydraulic hammer or the hydraulic ripper in the longitudinal di-
rection of the machine and with the windshield closed or with a front protective
grid.
Ensure during hammer or ripper operation that no cylinder is entirely extended or
retracted and that the stick is not in the vertical position.
In order to avoid damages to the machine, try not to break stone or concrete while
performing retraction and extension motions of the hydraulic hammer.
Do not apply the hydraulic hammer uninterrupted for more than 15 seconds at a
time to the same place. Change the breaking point. Too long uninterrupted oper-
ation of the hydraulic hammer leads to an unnecessary overheating of the hydrau-
lic oil.
Do not use the drop force of the hydraulic hammer or of the hydraulic ripper to
break stone or other materials. Do not move obstacles with the hydraulic hammer.
Misuse of this nature would damage both the hammer and the machine.
Do not use the hydraulic hammer or the hydraulic ripper to lift objects.
Before beginning breaking tasks, the pressure of the dampening accumulator of
the hydraulic ripper must be adjusted depending on the nature of the ground and
the excavator model.
Safe use of a ripper
Rippers are generally used in applications where the use of a bucket is not effi-
cient to break out rocks. Thus, these applications are more severe than in normal
use.
According to the severity of the application, the use of a ripper can result in vibra-
tions, shocks or stresses which are higher than in normal use. It may reduce the
expected lifetime of structures and/or components.
Special hydraulic devices can be necessary. Contact the Liebherr customer ser-
vice.
The ripper must be selected with particular care. When using a ripper not permit-
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will be
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Control and operation Operating manual
Operating and control elements
S14 Windshield wiper
Press button.
Intermittent setting is activated.
LED I in the button illuminates.
Press button again.
Continuous operation is activated.
LED C in the button illuminates.
LED I in the button goes out.
Press button again.
Windshield wiper is switched off.
LED C in the button goes out.
In addition, the break time for the intermittent setting can be adjusted:
Select the intermittent setting and keep the button depressed.
After a few seconds, LED I in the button will start blinking rapidly.
Release the button when the blinking duration has reached the desired break
time. Adjustment is possible between 2 and 9 seconds.
S17 Swing brake
Press button.
Swing brake is engaged.
Uppercarriage is locked.
LED in the button illuminates.
Press button again.
Swing brake is released.
LED in the button goes out.
S18 Overload warning device (optional)
Press button.
Overload warning device is activated.
LED in the button illuminates.
Press button again.
Overload warning device is disabled.
LED in the button goes out.
No overload warning device is built in.
Press button.
The symbol for "No overload warning device is present" appears on the mon-
itoring screen.
LED in the button illuminates.
Press button again.
The symbol for "No overload warning device is present" goes out.
LED in the button goes out.
S19 No function
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Operating manual Control and operation
Operating and control elements
Idle time setting menu
In this menu, you can set the time interval for the automatic idling function.
Fig. 3-27 Idle time setting menu
To set the time interval:
Press the Down or Up arrow key to set the time interval.
To exit the menu:
Press the Back button to save the value and/or exit the menu.
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Control and operation Operating manual
The access and the outfit of the cab
Setting the evaporator blower speed manually
Press button 5.
Blower speed manual setting is activated.
Indication bar 13 appears on display 19 and indicates currently set blower
speed.
Automatic mode symbol 12 disappears from display 19.
Manual blower mode symbol 14 blinks on display 19 for 5 seconds.
During these 5 seconds, evaporator blower speed can be increased with button 2
or decreased with button 3 in steps of 10%.
Press button 5 twice.
Manual mode is deactivated.
Symbols 13 and 14 disappear from display 19.
Automatic mode is reactivated.
Symbol 12 reappear on display 19.
Switching ON/OFF the heating mode
Press button 7.
Heating mode is activated.
Symbol 15 appears on display 19.
Press button 7 again.
Heating mode is deactivated.
Symbol 15 disappear from display 19.
Fresh air / recirculated air mode
Press button 8.
Control unit switches from fresh air to recirculated air mode.
Fresh air flap is closed.
Symbol 9 appears on display 19.
Press button 8 again.
Control unit switches from circulated air to fresh air mode.
Fresh air flap is open.
Symbol 9 disappear from display 19.
Switching the temperature unit from °Celcius to °Fahrenheit
Press and hold button 8.
Press button 3 additionally.
Temperature unit indication 18 switches over into °Fahrenheit.
Repeat same procedure to switch back temperature unit indication to °Celcius.
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Operating manual Control and operation
Working with the machine
The machine will be braked.
When the pedals for the drive units are in the neutral position, the hydrostatic drive
prevents the machine from rolling off.
In the neutral position, the parking brake will be applied automatically after a few sec-
onds. The work equipment can, however, still be moved.
Actuating a travel pedal again will disable the travel brake.
Caution!
Disengaging the pedals quickly causes the machine to halt abruptly.
Before starting the machine, always fasten the safety belt.
The travel brake can also be directly actuated by using button S354.
Press button.
Travel brake is engaged.
Undercarriage is locked.
LED in the button illuminates.
Press button again.
Travel brake is disabled.
Undercarriage is unlocked.
LED in the button goes out.
Note!
If the travel brake has been activated by using the button S354, the only way to dis-
abled the travel brake is to press S354 again. I.e. actuating the travel pedals wont
have any effect.
3.4 Working with the machine
Working safely with the machine
Before you start working, acquaint yourself with the special features of the job site
and any special precautions and warning signals. Examples of particular work en-
vironments would be on-site or traffic obstructions, the load-carrying capacity of
the ground and any requirements to make the job site safe from public use.
Always maintain a safe distance from overhangs, edges, slopes and unsafe
ground.
Be particularly careful in conditions of reduced visibility and changeable ground
conditions.
Familiarize yourself with the location of power and gas lines on the job site and
take particular care when working near them. If necessary, inform the responsible
authorities.
When working in areas with underground lines (gas, electricity), adhere to the
laws, regulations and rules applicable at the place of use.
Maintain a safe distance from electrical aerial lines. Do not allow the attachment
to come near cables when working near electrical aerial lines. Risk of fatality! In-
form yourself about required safety distances.
The following actions must be carried out in the event of any transfer of electricity:
do not move the machine or its attachment,
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• warn any personnel in the vicinity not to come close to the excavator and
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Control and operation Operating manual
Transport
always ensuring that the contact surfaces between the flatbed trailer and the load
carried are free of dirt, ice, snow, oil and grease.
Additional lashing precautions for backhoe buckets
When you lash the backhoe bucket, also obey the precautions that follow:
Only use the lashing points shown in the stickers placed on the bucket.
You can use the bucket teeth as lashing points.
Be careful about the position of the center of gravity of the bucket.
Wedge the bucket during transport.
The bucket has two possible transport positions. The height B1 gives the correct
transport position as shown in the transport drawing.
If the height B1 is more than 3,6 m, turn over the bucket safely.
Additional lashing precautions for shovel buckets
When you lash the shovel bucket, also obey the precautions that follow:
Only use the lashing points shown in the stickers placed on the bucket.
You can use the bucket teeth as lashing points.
Do not use the welded beam to lash the bucket.