PDF Technical Manual John Deere 850DLC Excavator - 2 MB
This is the complete technical manual for the John Deere 850DLC Excavator, covering operation and tests.
It provides technicians with detailed diagnostic procedures to accurately troubleshoot system malfunctions.
The manual includes functional schematics and specifications required for testing and adjusting the machine's systems.
It is an essential tool for any professional servicing the 850DLC excavator.
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--- Page 1 ---
850DLC
Excavator
Operation and Tests
TECHNICAL MANUAL
850DLC Excavator Operation and
Test
TM10009 06SEP07 (ENGLISH)
For complete service information also see:
850DLC Excavator Repair . . . . . . . . . . . . . . . TM10011
Undercarriage Appraisal Manual . . . . . . . . . SP326
850DLC Operatorβs Manual . . . . . . . . . . . . . . OMT221101
JDLinkο£ͺ / ZXLinkο£ͺ Machine Monitoring
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CTM10006
Worldwide Construction
And Forestry Division
LITHO IN U.S.A.
--- Page 3 ---
Safety
9000
Add Cab Guarding for Special Uses 01
3
Special work situations or machine attachments may
βUNβ15SEP00
create an environment with falling or flying objects.
Working near an overhead bank, doing demolition work,
using a hydraulic hammer, or working in a wooded area,
for example, may require added guarding to protect the
T133733
operator.
Additional Level II FOPS (falling object protective
structures) and special screens or guarding should be
installed when falling or flying objects may enter or
damage the machine. Contact your authorized dealer for
information on devices intended to provide protection in
special work situations.
DW90712,0000056 β19β03FEB06β1/1
Inspect Machine
Inspect machine carefully each day by walking around it
before starting.
Keep all guards and shields in good condition and
βUNβ18OCT88
properly installed. Fix damage and replace worn or broken
parts immediately. Pay special attention to hydraulic
hoses and electrical wiring.
T6607AQ
TX03679,0001734 β19β03JAN07β1/1
Stay Clear of Moving Parts
βUNβ12SEP01
Entanglements in moving parts can cause serious injury.
Stop engine before examining, adjusting or maintaining
any part of machine with moving parts.
T133592
Keep guards and shields in place. Replace any guard or
shield that has been removed for access as soon as
service or repair is complete.
TX03679,00016D2 β19β03JAN07β1/1
TM10009 (06SEP07) 9000-01-3 850DLC Excavator Operation and Tests
090607
PN=11
--- Page 4 ---
Safety
9000
Remove Paint Before Welding or Heating 01
13
Hazardous fumes can be generated when paint is heated
by welding or using a torch. Dust from sanding or grinding
βUNβ24AUG00
paint can also be hazardous.
Remove paint to at least 76 mm (3 in.) from area to be
heated. Wear an approved respirator when sanding or
T133546
grinding paint. If a solvent or paint stripper is used, wash
area with soap and water. Remove solvent or paint
stripper containers from work area and allow fumes to
disperse at least 15 minutes before welding or heating.
Work outside or in a well-ventilated area. Dispose of
waste, paint and solvents properly.
TX03679,0001732 β19β28FEB06β1/1
Make Welding Repairs Safely
IMPORTANT: Disable electrical power before welding.
βUNβ31AUG00
Turn off main battery switch or
disconnect positive battery cable.
Separate harness connectors to engine
and vehicle microprocessors.
T133547
Avoid welding or heating near pressurized fluid lines.
Flammable spray may result and cause severe burns if
pressurized lines fail as a result of heating. Do not let heat
go beyond work area to nearby pressurized lines.
Remove paint properly. Do not inhale paint dust or fumes.
Use a qualified welding technician for structural repairs.
Make sure there is good ventilation. Wear eye protection
and protective equipment when welding.
TX03679,00016D5 β19β08MAY07β1/1
TM10009 (06SEP07) 9000-01-13 850DLC Excavator Operation and Tests
090607
PN=21
--- Page 5 ---
Main Controller (MCF) Diagnostic Trouble Codes
2 Machine Function Is operation of machine normal? See Operational Checkout Procedure. (Group YES: Machine may be
Check 9005-05). operated but it is
recommended that the
main controller (MCF) be
replaced.
9001
NO: Main controller
10
(MCF) malfunction.
3
Replace. See Main
Controller (MCF) Remove
and Install. (Group
9015-20).
β β β1/1
11002.02 β Abnormal A/D Conversion
LD30992,0000375 β19β02MAY07β1/1
Controller Hardware Diagnostics
β β β1/1
1 Code Check Clear and re-check diagnostic trouble codes. YES: Code is still present
and machine does not
Is DTC 11002.02-Abnormal EEPROM still present? operate. Replace main
controller (MCF). See
Main Controller (MCF)
Remove and Install.
(Group 9015-20).
YES: Code is still present
but machine is still
operable. Go to Machine
Function Check.
NO: Main controller
(MCF) is OK.
β β β1/1
TM10009 (06SEP07) 9001-10-3 850DLC Excavator Operation and Tests
090607
PN=27
--- Page 6 ---
Main Controller (MCF) Diagnostic Trouble Codes
4 Open Circuit Check Disconnect connector to switch panel. YES: Go to Short Circuit
Check.
Check continuity between main controller (MCF) connector D pin D15 and switch panel
connector pin 2. NO: Open circuit in
harness.
Is there continuity between the pins?
9001
Repair or replace
10
harness. See Cab
13
Harness (W1) Wiring
Diagram. (Group
9015-10.)
β β β1/1
5 Short Circuit Check Disconnect connector to switch panel. YES: Short circuit in
harness.
Check continuity between switch panel connector pin 2 and power and ground.
Repair or replace
Is there continuity to power or ground? harness. See Cab
Harness (W1) Wiring
Diagram. (Group
9015-10.)
NO: Main controller
(MCF) malfunction.
Replace main controller.
See Main Controller
(MCF) Remove and
Install. (Group 9015-20).
β β β1/1
6 Harness Voltage NOTE: Key Switch: ON YES: Open circuit in
Check harness between main
Disconnect connector to switch panel. controller (MCF) and
engine speed dial pin 3.
Check voltage between switch panel connector pin 1 and machine ground.
Repair or replace
Is voltage between 4.5β5.5 volts? harness. See Cab
Harness (W1) Wiring
Diagram. (Group
9015-10.)
NO: Open circuit in
harness between main
controller (MCF) and
engine speed dial pin 1.
Repair or replace
harness. See Cab
Harness (W1) Wiring
Diagram. (Group
9015-10.)
β β β1/1
TM10009 (06SEP07) 9001-10-13 850DLC Excavator Operation and Tests
090607
PN=37
--- Page 7 ---
Main Controller (MCF) Diagnostic Trouble Codes
4 Short Circuit Check Disconnect harness from main controller (MCF) and pump 2 delivery pressure sensor. YES: Short circuit in
harness.
Check continuity between pump 2 delivery pressure sensor connector pin 2 and power
and ground. Repair or replace
harness. See Cab
Is there continuity between pin 2 and power or ground? Harness (W1) Wiring
9001
Diagram, see Machine
10
Harness (W2) Wiring
23
Diagram, and see Pump
Harness (W8) Wiring
Diagram. (Group
9015-10.)
NO: Main controller
(MCF) malfunction. See
Main Controller (MCF)
Remove and Install.
(Group 9015-20.)
β β β1/1
5 Harness Voltage Disconnect pump 2 delivery pressure sensor from harness. YES: Open circuit in
Check harness between main
Check voltage between pump 2 delivery pressure sensor connector pin 1 and machine controller (MCF) and
ground. pump 2 delivery pressure
sensor pin 3.
Is voltage between 4.5β5.5 Volts?
Repair or replace
NOTE: Key Switch: On harness. See Cab
Harness (W1) Wiring
Diagram, see Machine
Harness (W2) Wiring
Diagram, and see Pump
Harness (W8) Wiring
Diagram. (Group
9015-10.)
NO: Open circuit in
harness between main
controller (MCF) and
pump 2 delivery pressure
sensor pin 1.
Repair or replace
harness. See Cab
Harness (W1) Wiring
Diagram, see Machine
Harness (W2) Wiring
Diagram, and see Pump
Harness (W8) Wiring
Diagram. (Group
9015-10.)
β β β1/1
11301.03 β Swing Pilot Pressure Sensor
Circuit Voltage High
LD30992,000037E β19β02MAY07β1/1
TM10009 (06SEP07) 9001-10-23 850DLC Excavator Operation and Tests
090607
PN=47
--- Page 8 ---
Main Controller (MCF) Diagnostic Trouble Codes
4 Short Circuit Check Disconnect harness from arm in pilot pressure sensor and main controller (MCF). YES: Short circuit in
harness.
Check continuity between arm in pilot pressure sensor connector pin 2 and power and
ground. Repair or replace
harness. See Cab
Is there continuity to power or ground? Harness (W1) Wiring
9001
Diagram and see
10
Machine Harness (W2)
33
Wiring Diagram. (Group
9015-10.)
NO: Main controller
(MCF) malfunction.
Replace controller. See
Main Controller (MCF)
Remove and Install,
(Group 9015-20.)
β β β1/1
5 Harness Voltage Disconnect arm in pilot pressure sensor from harness. YES: Open circuit in
Check harness between main
Check voltage between arm in pilot pressure sensor connector pin 1 and machine controller (MCF) and arm
ground. in pilot pressure sensor
pin 3.
Is voltage between 4.5β5.5 volts?
Repair or replace
NOTE: Key Switch: On harness. See Cab
Harness (W1) Wiring
Diagram and see
Machine Harness (W2)
Wiring Diagram. (Group
9015-10.)
NO: Open circuit in
harness between main
controller (MCF) and arm
in pilot pressure sensor
pin 1.
Repair or replace
harness. See Cab
Harness (W1) Wiring
Diagram and see
Machine Harness (W2)
Wiring Diagram. (Group
9015-10.)
β β β1/1
11303.04 β Arm Roll-in Pilot Pressure
Sensor Circuit Voltage Low
LD30992,0000383 β19β02MAY07β1/1
TM10009 (06SEP07) 9001-10-33 850DLC Excavator Operation and Tests
090607
PN=57
--- Page 9 ---
Main Controller (MCF) Diagnostic Trouble Codes
3 Solenoid Function Switch travel speed solenoid (SI) harness connector with another solenoid valve in YES: Travel speed
Check solenoid valve manifold. solenoid (SI) malfunction.
Replace solenoid.
Clear diagnostic trouble codes (DTC) and re-check for DTC.
NO: Main controller
Does diagnostic trouble code stay with travel speed solenoid (SI)? (MCF) malfunction.
9001
Replace controller. See
10
Main Controller (MCF)
43
Remove and Install.
(Group 9015-20.)
β β β1/1
11405.04 β Travel Speed Solenoid (SI) Valve
Current Feedback Low
LD30992,000038B β19β02MAY07β1/1
Travel Speed Solenoid (SI) Diagnostics
Travel speed solenoid (SI) current 56 mA or less.
β β β1/1
1 Solenoid Resistance Disconnect harness connector from travel speed solenoid (SI). Check resistance of YES: Go to Continuity
Check solenoid. Check.
Is resistance between 14.8β22.2 ohms? NO: Travel speed
solenoid (SI) malfunction.
Replace solenoid.