PDF Operator’s Manual John Deere 608B Feller Buncher - 798 KB
Get the most out of your John Deere 608B Feller Buncher with the official operator's manual.
This guide covers daily checks, control functions, and safe operating practices to ensure maximum productivity and safety in demanding forestry applications.
Understanding your machine is key to its longevity and performance.
This manual is a must-read for every operator.
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--- Page 1 ---
608B FELLER BUNCHER
S/N 997457 – 997472
S/N 10BA1000 – PRESENT
OPERATOR’S MANUAL
608B FELLER BUNCHER
OMF294826
CALIFORNIA
Proposition 65 Warning
Diesel engine exhaust and some of its constituents
are known to the State of California to cause cancer,
birth defects and other reproductive harm.
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
Worldwide Construction and Forestry Division
English
--- Page 3 ---
Issue Page
8/99-01 1-1
1. Introduction
1.1 Foreword 1-2
1.2 Model and Serial Number Record 1-3
1.3 Modifications or Repairs to Roll-over Protective Structures (ROPS) 1-4
1.4 Non-approved Field Product Changes 1-6
1.5 Sound Information 1-7
608B Feller Buncher
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Issue Page
8/99-01 2-3
2.2 Items Not Covered By Warranty
Items and service related functions that are not covered by warranty include, but are not limited to:
1. Issues resulting from misuse, negligence or accident.
2. Issues arising from the use of non approved parts.
3. Repairs or adjustment by other than Timberjack or its authorized dealers.
4. Engine Tune up.
5. Issues resulting from the installation of unauthorized attachments or modifications.
6. Transportation of the machine to or from the repair location.
7. Dealer travel or mileage expense.
8. Injection pump and injector adjustments.
9. Air, oil and fuel filter elements.
10. Air conditioning filters, freon, receiver dryer.
11. Diagnosis time will not be considered warranty labour.
12. Tightening of nuts, bolts, screws, etc. or adjustments.
13. Natural wear or defects caused by natural wear.
14. Issues due to use of improper fuel, oil, grease, coolant, or other fluid or lubricant.
15. Freight expenses, daily allowances and overtime labour rates.
16. Damage occurring while in dealer inventory or in transit from the factory to dealer and from dealer
to customer.
17. Indirect damages such as loss of earnings, etc.
18. Normal Maintenance services. Maintenance services that are not directly involved with defective
parts are considered normal service and should be excluded from a claim. These services include
(but not limited to):
Fuel system cleaning
Engine tune up
Brake inspection and adjustment
19. Other adjustments (but not limited to) such as:
Tightening of hydraulic fittings
Adding or replacing of service fluid and filters
Replacement of air, hydraulic, engine fuel filters, oil, belts, and breathers.
Hydraulic pressure adjustments.
608B Feller Buncher
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Issue Page
8/99-01 3-9
3.6 Servicing Safety Precautions
When servicing or repairing equipment, shut the
engine down, and disconnect the negative (-) battery
cable from both batteries.
Before performing maintenance or repair work on
any equipment, consult the manufacturer's
instruction manual and follow recommended
procedures.
WARNING
Diesel fuel or hydraulic fluid under pressure
can penetrate the skin and cause serious per-
sonal injury, blindness, or death. If any fluid
is injected into the skin, it must be surgically
removed within a few hours by a doctor famil-
iar with treating this type of injury.
Never use your bare hand to check for fluid leaks.
Fluid leaks under pressure may not be visible. When
searching for leaks, wear work gloves and use a
piece of cardboard or wood. Wear safety goggles for
eye protection.
Pressure can be maintained in a hydraulic system
long after the power source and pump have been
shut down. Lower the implements to the ground and
relieve trapped pressure before performing work on
components, or disconnecting any hoses.
608B Feller Buncher
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Issue Page
8/99-01 4-5
4.2 Equipment Nomenclature
4.2.2 S546 Felling Head with Heavy Duty Undercarriage
608B Feller Buncher
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Issue Page
8/99-01 4-15
4.3 Controls and Instrumentation
4.3.3 Switches and Gauges
Throttle Lever
To regulate engine speed, push lever forward
completely for full throttle and pull back completely
for low idle.
All felling operations should be performed at full
throttle. It is most important that the rpm of the
engine be correct at all times.
WARNING
Under no circumstances allow the Full
Throttle engine rpm to exceed the
recommended settings as serious damage
to the pumps will result.
Turntable Swing Brake Control
This is a two position switch used to engage or
disengage the turntable swing brake.
0 = OFF, l = ON.
When the swing brake is "ON" the turntable will not
rotate. During normal operation the swing brake
must be switched "OFF".
Travel Speed Control
This is a two position switch for Low and High
travel speed. Harvesting should be done in Low
travel speed position.
608B Feller Buncher
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Issue Page
8/99-01 4-25
4.3 Controls and Instrumentation
4.3.5 Safety Items
Escape Hatch (Rear Window)
In case of emergency the rear window can be
removed by releasing the over-centre latches and
pushing out the window.
Note!
Apply vaseline to the seal around the window frame
prior to installation.
The rear window can also be removed from the
outside by removing the 4 knobs on the window
frame and lifting out the window. Every 125 Hours,
remove the knobs and add Never-Seez to the
threads.
608B Feller Buncher
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Issue Page
8/99-01 5-7
5.1 Driving The Feller Buncher
5.1.4 Stopping Procedure
7. Turn the ignition key switch OFF to stop the
engine.
8. Turn the battery disconnect switch (2) OFF
(position 0) if the machine is to be parked
for more than a few hours.
608B Feller Buncher
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Issue Page
8/99-01 5-17
5.3 Felling Technique
5.3.1 General
The following operating techniques cover some of
the important points for the operator to keep in mind
while using the feller buncher.
This information is intended as a guide for the new
operator as well as an experienced operator
changing from another type of feller buncher to
achieve the best possible performance and
production output.
Planning the Operation
The most preferable felling approach is where the
trees are placed in rows, (either single stems or
pre-bunched), with the butt end pointing toward the
skidding direction. Plan the felling pattern and
skidding routes so that potential trouble spots can be
avoided.
Shallow Timber Stand
Start the felling operation at the outer boundary of
the logging area and progressively move the
machine forward in continuous felling and bunching
cycles.
Although the illustration shows clear cutting, the
same approach may be used for thinning operation.
Deep Stand
This approach is used on level ground or in winter
conditions where snow is greater than 2 ft (60 mm)
deep and tracks from the feller buncher may present
problems for skidding operation.
5.3.2 Felling Head
Read and understand the Felling Head Operator's
Manual thoroughly.
With the felling head lowered to the ground and the
engine shut off, remove the saw guard (1) and keep
for reinstallation during servicing of the felling
head. (S566 felling head shown).
608B Feller Buncher
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Issue Page
8/99-01 6-3
6.1 Maintenance Schedule
608B Feller Buncher
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Issue Page
8/99-01 6-13
6.2 Maintenance Procedures
6.2.2 Maintenance - First 25 Hours
21. Change Engine Oil and Filter
Remove the retaining bolt and swing the battery box
fully open. Take out the plug from the drain hose
and drain the engine oil into a suitable container.
Replace the plug after all of the oil has been drained.
Change the oil filter, then fill with fresh oil. See
paragraph 6.3.2 for recommended oil.
Swing open the engine compartment panel to access
the oil filler tube.
608B Feller Buncher
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Issue Page
8/99-01 6-23
6.2 Maintenance Procedures
6.2.3 Maintenance - 125 Hours
48. Check Swing Bearing Bolt Torque
Torque to 450 - 500 lb ft (610 - 680 Nm). Follow
the torque sequence as shown. Torque inner race
first then outer race.
49. Check Cab Mounting Bolt Torque
See item 27. for torque specification.
50. Check Swing Gearbox Bolt Torque
See item 28. for torque specification.
608B Feller Buncher
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Issue Page
8/99-01 6-33
6.2 Maintenance Procedures
6.2.8 Maintenance - 2000
Hours
72. Check Specific Gravity Of
Battery Electrolyte
Electrolyte specific gravity should be 1.260 - 1.280
on fully charged battery.
73. Change Engine Coolant
Refer to engine manufacturer's manual for
additional information.
6.2.9 Unscheduled
Maintenance
74. Drain Hydraulic Fluid
Due to seasonal changes, periodic hydraulic fluid
change may be required.
Remove the end cap from the hydraulic tank drain
valve and attach a suitable drain hose (with a #16
JIC female fitting) to the end of the drain valve.
Place the drain hose in a suitable container. Open
the drain valve and drain the hydraulic fluid into the
container.
With all the hydraulic cylinders retracted except
hoist, refill the tank with clean oil to the proper level
using the hand pump. Refer to section 6.3.1 for
recommended oil.
608B Feller Buncher
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Issue Page
8/99-01 8-1
8. Electrical System
8.1 Electrical System Schematic - 608B Feller Buncher 8-2
608B Feller Buncher
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Issue Page
8/99-01 9-7
9.6 Swing
Swing does not function; swing brake control in the "OFF" position
Check if swing brake is released. See Swing Brake will not release. Fault Finding
Procedure, below.
Check for loose connections or leaks. Repair.
Check if pilot oil is available at the pilot valve Repair pilot system.
(joystick).
Check if pilot oil is available at the control valve. Repair/replace joystick pilot valve.
Check the main relief, port relief and crossover Adjust, repair, replace.
reliefs.
Check for seized spool in the control valve. Repair/replace valve.
Check the pump for flow. Repair/replace.
Check the swing motor for wear or damage. Repair/replace.
Swing brake will not release; brake control in the "OFF" position
Check for loose connections or leaks. Repair.
Check if pilot oil is available at the brake control Repair pilot system.
valve.
Check if pilot oil is available at the brake cylinder. Repair/replace brake control valve.
Check the brake cylinder for a malfunction. Repair/replace.
608B Feller Buncher
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Issue Page
8/99-01 10-7
10.2 Specifications
Stick and Tilt Cylinder:
Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0 in. (127 mm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40.5 in. (1029 mm)
Rod Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 in. (76.2 mm)
Collapsed Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59.88 in. (1520.8 mm)
Hydraulic Valves:
Main Valves
Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Spools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Main Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4600 psi (31.72 MPa)
Rated Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 U.S gpm (189.3 L/M)
Saw Valve
Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Spools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Main Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4000 psi (24.82 MPa)
Attachment Valve
Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Spools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Main Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 psi (17.2 MPa)
Joystick & Foot Pedal Valves
Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Each
Operating Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550 psi (3.8 MPa)
608B Feller Buncher