Timberwolf TW 350DHBt User manual

CONTENTS
TIMBERWOLF
TW 350DHB(t)
14th Dec 2012
Section Page No.
INTRODUCTION 1
PURPOSE OF MACHINE 2
MACHINE DIMENSIONS & SPECIFICATIONS 2
PARTS LOCATION DIAGRAMS 3 & 4
SAFE WORKING 5
Operator’s Personal Protective Equipment Required 5
Basic Woodchipping Safety 5
General Safety Matters - Do’s and Dont’s 6
Noise Test 7
OPERATING INSTRUCTIONS 8
Safe Transportation 8
Hitching onto the Tow Ball 8
Unhitching the Chipper 9
Adjusting the Towhead Height 9
Delivery 10
Operator’s Personal Protective Equipment Required 10
Manual Controls 10
Auto Controls 11
Emergency Stopping 12
Daily Checks Before Starting 12
Hydraulic Oil Lever Indicator 12
Fuel Level Indicator 12
Engine Controls 12
Starting the Engine 12
Controlling the Engine Speed 12
Stopping the Engine 13
Blade Wear 13
Before Using the Chipper 13
Starting to Chip 13
Jacking Point / Wheel Change 14
Discharge Controls 15
Operating the Turntable 15
Safe Lifting of the Chipper 15
Chipping 16
Blockages 16
SERVICE INSTRUCTIONS 17
Service Schedule 18
Safe Maintenance 19
Spares 19
Battery Removal and Maintenance 19
Change Hydraulic Oil and Filter 19
Copper Ease Safety Information 20
Battery Safety Information 20
Change Blades 20
Check Fittings 23
Check Hoses 23
Tension Drive Belts 23
General Greasing 24
Engine Manufacturer’s Handbook 24
WARRANTY STATEMENT 25
EC DECLARATION OF CONFORMITY CERTIFICATE 26
IDENTIFICATION PLATES 27
DECALS 28
ELECTRICAL DETAIL 30
HYDRAULIC LAYOUT 31
CIRCUIT DIAGRAM 32
PARTS LISTS 34

TIMBERWOLF
TW 350DHB(t)
1
Thank you for choosing this Timberwolf brushwood chipper. Timberwolf chippers are
designed to give safe and dependable service if operated according to the instructions.
IMPORTANT HEALTH AND SAFETY INFORMATION
Before using your new chipper, please take time to read this manual which contains
and explains the chipper controls. Failure to do so could result in:
- PERSONAL INJURY
- EQUIPMENT DAMAGE
- DAMAGE TO PROPERTY
- A MEMBER OF THE GENERAL PUBLIC BECOMING INJURED
This manual covers the operation and maintenance of the Timberwolf TW 350DHB(t). All
information in this manual is based on the latest product information available at the
time.
All the information you need to operate the machine safely and effectively is contained
within pages 3 to 12. Ensure that all operators are properly trained for operating this
machine, especially with regard to safe working practices.
Timberwolf's policy of constantly improving their products may involve major or minor
changes to the chippers or their accessories. Timberwolf reserves the right to make
changes at any time without notice and without incurring any obligation.
Due to improvements in design and performance during production there may be, in
some cases, minor discrepancies between the actual chipper and the text in this manual.
The manual should be considered a permanent part of the
machine and should remain with it if the machine is resold.
CAUTION or WARNING
BE AWARE OF THIS SYMBOL AND WHERE
SHOWN, CAREFULLY FOLLOW
THE INSTRUCTIONS.
This caution symbol indicates important safety messages in this manual.
When you see this symbol, be alert to the possibility of injury to yourself
or others, and carefully read the message that follows.
ALWAYS FOLLOW SAFE OPERATING AND MAINTENANCE PRACTICES
INTRODUCTION

TIMBERWOLF
TW 350DHB(t)
2
TIMBERWOLF TW 350DHB(t) & TW 350DHBA(t) SPECIFICATION
Engine type Hatz air cooled 4-cyl 4L41C
silent pack diesel engine
Maximum power 47kW (64hp)
Cooling method Air cooled
Overall weight with fixed head: 2,270kg
with adjustable head: 2,320kg
Starting method Electric
Roller feed Twin series hydraulic motors
Maximum diameter material 230mm (9")
Fuel capacity 38 litres
Hydraulic oil capacity 20 litres
Material processing capacity up to 12 tonnes/hr
Fuel type Diesel
The Timberwolf TW 350DHB(t)
2675mm, (1620mm with discharge removed)
The Timberwolf TW 350DHB(t) / TW 350DHBA(t) brushwood chipper has a feed aperture 240mm high x
350mm wide and is designed to chip solid wood material up to 230mm (9”) in diameter including
timber branches, saplings and brushwood. It is capable of chipping up to 12 tonnes of brushwood per hour.
The TW 350DHB(t) /TW 350DHBA(t) is powered by an on-board air cooled diesel engine and feed to
the chipping chamber is via twin hydraulically powered rollers. The chipping chamber is turntable
mounted on a T-pole chassis with an integral braking system designed to allow the machine to be
towed to the place of work on the public highway.
Towing Length: 3580mm, Working Length: 4030mm
TW 350DHBA(t)
Adjustable tow head
TW 350DHB(t)
Fixed tow head
Towing Length: 3800mm, Working Length: 4265mm
DIMENSIONS
Serial No. Location
The serial number can be found
on the identification plate
located on the chassis beam.
2070mm

TIMBERWOLF
TW 350DHB(t)
3
FEED FUNNEL
DISCHARGE
TUBE
DISCHARGE
BUCKET
SAFETY BAR
FIXED BELT
GUARD
FIXED ROLLER
BOX GUARD
FUEL FILLER
CONTROL
PANEL
FEED
TRAY
TOW HEAD
ENGINE
ROLLER CONTROLS
JOCKEY
WHEEL
ASSEMBLY
ROTOR HOUSING
ROLLER
CONTROLS
(ON EACH
SIDE)
DISCHARGE
ADJUSTMENT
CONTROL
THROTTLE
SERVICE GUARD
(FUEL FILTER & ENGINE RESTART) HYDRAULIC OIL FILLER
DIPSTICK
MOVING ROLLER
BOX GUARD
MOVING BELT
GUARD
ENGINE OIL FILTER
OIL COOLER HATCH
MARKER LAMPS
EXHAUST
PARTS LOCATOR

TIMBERWOLF
TW 350DHB(t)
4
ROTOR
DRIVE
PULLEY
TOP
ROLLER SLIDE
ROLLER BOX
DRIVE
BELTS
SPARE
WHEEL
DIRECTIONAL
CONTROL VALVE
(COMPLETE WITH OIL FILTER)
TURN
TABLE LEVER
BATTERY
FUEL
TANK
HYDRAULIC
OIL TANK
ENGINE
PULLEY
TRIGGER
WHEEL AND
SENSOR
BELT AD-
JUSTER
HYDRAULIC
GAUGE
HYDRAULIC
FILTER
PARTS LOCATOR

TIMBERWOLF
TW 350DHB(t)
5
BASIC WOODCHIPPING SAFETY
The operator should be aware of the following points:
MAINTAIN A SAFETY EXCLUSION ZONE around the chipper of at least 10 metres for the
general public or employees without adequate protection. Use hazard tape to identify this
working area and keep it clear from debris build up. Chips should be ejected away from any
area the general public have access to.
HAZARDOUS MATERIAL - Some species of trees and bushes are poisonous. The chipping
action can produce vapour, spray and dust that can irritate the skin. This may lead to
respiratory problems or even cause serious poisoning. Check the material to be chipped before
you start. Avoid confined spaces and use a facemask if necessary.
BE AWARE when the chipper is processing material that is an awkward shape. The material can
move from side to side in the funnel with great force. If the material extends beyond the funnel,
the brash may push you to one side causing danger. Badly twisted brash should be trimmed
before being chipped to avoid thrashing in the feed funnel.
BE AWARE that the chipper can eject chips out of the feed funnel with considerable force. Always
wear full head and face protection.
ALWAYS work on the side of the machine furthest from any local danger, e.g. not road side.
WARNING
SAFE WORKING
The chipper will feed material through on its own. To do this, it relies on sharp
blades both on the feed rollers and the chipper rotor. To keep the blades sharp,
only feed the machine with clean brushwood. DO NOT put muddy/dirty wood,
roots, potted plants, bricks, stones or metal into the chipper.
OPERATOR'S PERSONAL PROTECTIVE EQUIPMENT REQUIRED
Chainsaw safety helmet fitted
with mesh visor and
recommended ear defenders to
the appropriate specifications.
Work gloves with elasticated
wrist.
Close fitting heavy-duty
non-snag clothing.
Face mask if
appropriate.
DO NOT
wear rings, bracelets, watches,
jewellery or any other items that
could be caught in the material
and draw you into the chipper.
Steel toe cap safety boots.

TIMBERWOLF
TW 350DHB(t)
6
ü
SAFE WORKING
GENERAL SAFETY MATTERS
DO’S AND DON’TS
DO NOT operate chipper unless available light is
sufficient to see clearly.
DO NOT use or attempt to start the chipper with-
out the feed funnel, guards and discharge unit
securely in place.
DO NOT stand directly in front of the feed funnel
when using the chipper. Stand to one side.
DO NOT allow -
DO NOT smoke when refuelling.
DO NOT let anyone who has not received
instruction operate the machine.
DO NOT climb on the machine at any time.
DO NOT handle material that is partially engaged
in the machine.
DO NOT touch any exposed wiring while machine
is running.
DO NOT use the chipper inside buildings.
- to enter the machine, as damage is likely.
ALWAYS stop the chipper engine before making
any adjustments, refuelling or cleaning.
ALWAYS check rotor has stopped rotating and
remove chipper ignition key before maintenance
of any kind, or whenever the machine is to be left
unattended.
ALWAYS check the machine is well supported and
cannot move.
ALWAYS operate the chipper with the engine set
to maximum speed when chipping.
ALWAYS check (visually) for fluid leaks.
ALWAYS take regular breaks. Wearing personal
protective equipment for long periods can be
tiring and hot.
ALWAYS keep hands, feet and clothing out of feed
opening, discharge and moving parts.
ALWAYS use the next piece of material or a push
stick to push in short pieces. Under no
circumstances should you reach into the funnel.
ALWAYS keep the operating area clear of people,
animals and children.
ALWAYS keep the operating area clear from
debris build up.
ALWAYS keep clear of the chip discharge tube.
Foreign objects may be ejected with great force.
ALWAYS ensure protective guarding is in place
before commencing work. Failure to do so may
result in personal injury or loss of life.
ALWAYS operate the chipper in a well ventilated
area - exhaust fumes are dangerous.
BRICKS STRING CLOTH PLASTIC STONES
METAL GLASS RUBBER ROOTS BEDDING
PLANTS
ü

TIMBERWOLF
TW 350DHB(t)
7SAFE WORKING
NOISE TEST
MACHINE: TW 350DHB(t) & TW 350DHBA(t)
NOTES: Tested chipping 120mm x 120mm corsican pine 1.5m in
length
Noise levels above 80dB (A) will be experienced at the working position. Wear ear protection
at all times to prevent possible damage to hearing. All persons within a 4 metre radius must also
wear good quality ear protection.
98.6 dB
99.2 dB
96.8 dB97.4 dB
R= 4 metres
Guaranteed Sound Power: 122dB (A)
101.8 dB
104.9 dB
As required by Supply of Machinery (safety) regulations of 2008.
R= 10 metres
9
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WHEN towing a chipper the maximum speed limit is 60 mph.
ON rough or bumpy road surfaces reduce speed accordingly to protect your machine from
unnecessary vibration.
WHEN towing off road be aware of objects that may catch the chipper undergear.
WHEN towing off road ensure inclination is not excessive.
AVOID excessively pot holed ground.
WHEN reversing the chipper the short wheel base will react quickly to steering.
ALWAYS check the discharge clamps are tight before travelling.
KEEP tyre pressures inflated to 4.8 bar or 70 psi.
CHECK wheel nuts are tightened to 240lbs ft (325Nm).
CLEAR loose chippings and debris from the machine before travelling.
ENSURE the feed funnel is closed and the catches are properly engaged before travelling.
SAFE TRANSPORTATION
WARNING DO NOT RIDE ON THE CHIPPER WHEN IT IS BEING TOWED.
HITCHING ONTO THE TOW BALL
OPERATING INSTRUCTIONS 8
TIMBERWOLF
TW 350DHB(t)
CHECK the ball head is well greased.
WIND jockey wheel assembly anticlockwise until the tow head is above the height of the ball
hitch on the vehicle.
REVERSE the vehicle so the ball hitch is directly below the tow head.
ATTACH the breakaway cable to a strong point on the vehicle, not the ball hitch.
GRASP handle on tow head and pull up handle until it catches and remains in the ‘up’ position.
WIND the jockey wheel assembly clockwise, to lower the tow head onto the ball hitch.
RELEASE handle and continue to wind jockey wheel clockwise. The tow head should snap
into place on the ball hitch. If it doesn't, repeat previous 2 steps.
WIND jockey wheel up until fully retracted and the jockey wheel frame folds into its tow position.
CONNECT electrical plug to socket on rear of towing vehicle and check operation of all the
trailer and vehicle lights.
THE chipper is now properly attached to the vehicle.
CHECK turntable is located in the ‘tow’
position and the safety catch is locked in
position. TOW POSITION IS ALWAYS WITH
THE FUNNEL IN-LINE WITH TOWING
VEHICLE.
CHECK prop stands are fully retracted.
Funnel in correct
towing position
Do not tow with
rotated funnel

TIMBERWOLF
TW 350DHB(t)
9OPERATING INSTRUCTIONS
DISCONNECT the electrical cable from the vehicle socket.
RELEASE breakaway cable.
WIND the jockey wheel assembly anticlockwise until it just starts to take the weight of the chipper.
GRASP the tow head handle and pull up until it catches and remains in the ‘up’ position.
APPLY the handbrake.
CONTINUE to wind the jockey wheel anticlockwise. This should lift the tow head clear of the ball
hitch.
DRIVE the vehicle clear of the chipper.
WIND the jockey wheel assembly to a suitable point where the chipper is level.
THE chipper is now fully detached from the vehicle.
LOWER the two prop stands to stabilise the chipper.
The TW350DHB (t) A chipper has the ability to adjust the towhead height to correspond with the
vehicles towing point.
The preferred towing angle of any chipper is with the chassis level to the ground. The adjustable head
has the ability to move between 300mm from the ground to 875mm giving an overall adjustment of
575mm.
The towhead latch and handbrake
fundamentally work the same as a fixed
standard towhead, however the front section of
the head is retained in position via a locking ring
and single clamp handle.
To adjust the height the locking handle located
on the side of the head (1) is turned in an
anticlockwise direction to allow for the locking
ring to disengage from its apposing ring. An
internal damper is fitter to support the heads
weight allowing both hands free to adjust the
height. Once the desired height has been
achieved the locking handle is turned clockwise
until tight. The latching of the hitch is as normal
as is the fitting of the light plug and breakaway cable as outlined in the ‘Hitching onto the tow ball’
section on page 8 .
1
UNHITCHING THE CHIPPER
WARNING DO NOT UNHITCH ON AN INCLINE AS THE AUTO- REVERSE
BRAKES MAY BE ACTIVATED AND THE CHIPPER WILL
ROLL BACKWARDS.
ADJUSTING THE TOWHEAD HEIGHT

TIMBERWOLF
TW 350DHB(t)
10
OPERATING INSTRUCTIONS
CHAINSAW safety helmet fitted with visor
and recommended ear defenders to an
appropriate specification.
HEAVY-DUTY gloves with elasticated wrist area.
CLOSE - FITTING heavy-duty non-snag clothing.
SAFETY footwear.
FACE MASK (if appropriate).
See page 5 for more detailed information.
DELIVERY
OPERATOR’S PERSONAL PROTECTIVE EQUIPMENT REQUIRED
MANUAL CONTROLS
All Timberwolf TW 350DHB(t) & TW 350DHBA(t) machines have a full pre - delivery inspection before
leaving the factory and are ready to use. Read and understand this instruction manual before
attempting to operate the chipper. In particular, read pages 5-7 which contain important health and
safety information and advice.
GREEN
FORWARD
FEED
PANEL
BLUE
REVERSE
FEED
PANEL
RED SAFETY BAR
Control Panel Diagram
Roller control boxes are located on the side of the feed tray and in the top of the guards (see Parts Locator
on page 3). Their function is to control the feed rollers, which draw material into the machine. They do not
control the main rotor. The rotor turns all the time the engine is running.
GREEN BUTTON = Forward feed - Push the button once - this activates the rollers and will allow you
to start chipping (if the rotor speed is high enough).
RED SAFETY BAR = This is the large red bar that surrounds the feed tray and side of the feed
funnel. The bar is spring loaded and connected to a switch that will interrupt the power to the rollers.
The switch is designed so that it only activates if the bar is pushed to the limit of its travel. The rollers
stop instantly, but can be made to turn again by pressing either the GREEN FEED or BLUE REVERSE
control buttons.
BLUE BUTTON = Reverse feed - allows you to back material out of the rollers. The rollers will only
turn in reverse as long as you keep pressing the button.
Do not rely on the red bar to keep the rollers stationary if it
is necessary to clear or touch the rollers. Always switch off the
machine and remove ignition key before approaching the
rollers.
WARNING DO NOT remove, jam, disable, bypass, override or otherwise
impede the effectiveness of the red safety bar.

TIMBERWOLF
TW 350DHB(t)
11 OPERATING INSTRUCTIONS
LOCATE the machine on firm level ground.
CHECK machine is well supported and cannot move.
CHECK turntable locked in position and handle secured.
CHECK all guards are fitted and secure.
CHECK the discharge unit is in place and fastened securely.
CHECK discharge tube is pointing in a safe direction.
CHECK the feed funnel to ensure no objects are inside.
CHECK feed tray is in up position - to prevent people reaching rollers.
CHECK controls as described on page 13.
CHECK (visually) for fluid leaks.
CHECK fuel and hydraulic and engine oil levels.
For parts location see diagrams on pages 3 & 4.
The engine management unit controls the feed rate of the material going into the chipping chamber. If
the engine speed is below the predetermined level, the engine management unit will not allow the feed
rollers to work in the forward “infeed” direction, or the reverse direction, until the rotor speed rises above
the predetermined level. At this point, the feed rollers will start turning without warning. When
applicable the roller whilst chipping will reverse a small distance to clear any blockages or attempt to
break awkward joints. When this action is repeated because blockage or joint is not cleared, manually
operate the reverse button on the control box to clear the blockage or remove joint to be cut with a
saw.
This can be viewed via the level gauge on side of the hydraulic tank (see parts
locator on page 4). Maximum and minimum marks are provided.
The fuel level can be seen via the level gauge on the side of the engine. To
illuminate gauge turn key to position 1 (see engine controls). Fill with fuel to full
position on gauge, do not overfill!
In the event of an emergency activating the red safety bar will stop the rollers immediately. To restart
the rollers, just push the green forward button or blue reverse button.
AUTO CONTROLS
EMERGENCY STOPPING
HYDRAULIC OIL LEVEL INDICATOR
DAILY CHECKS BEFORE STARTING
FUEL LEVEL INDICATOR

OPERATING INSTRUCTIONS
TIMBERWOLF
TW 150DHB
12
ENSURE throttle lever is set in the idle position (tortoise).
INSERT key and turn to position 1.
DIAGNOSTIC lamps flash 3 times, engine operation (1) and battery charge (2) lamps will
continue to flash and red oil pressure lamp will stay illuminated.
CHECK fuel level gauge.
TURN key to position 2 to start engine, release immediately engine begins to run.
GREEN engine operation lamp remains illuminated while engine is running, all other lamps
must go out immediately.
WARNING - diagnostic lamps will illuminate if a fault is detected while engine is running. Switch
off engine immediately.
Note: Automatic shutdown may occur when fault is detected. Consult engine manufacturers
handbook for fault analysis and correction procedure.
The engine controls are in two locations. The engine ignition is on the
control panel at the engine end, and the throttle lever is on the side of the
engine (see parts locator on page 3).
HOURS
COUNTER
POWER
ON / OFF
& START
FUEL
GAUGE
The engine has two throttle settings, idle and fast. These are controlled by
the throttle lever on the engine. Moving the lever towards the ‘Hare’ on the
pictogram will increase engine speed while moving it towards the ‘Tortoise’
will decrease the engine speed. Always stop and start engine with throttle
lever in the idle position.
0 0 0 0 9 7 5
1. Engine operational indicator
2. Battery charge indicator
3. Oil pressure warning
4. Engine temperature warning
5. Air cleaner maintenance warning
6. Engine pre-heat lamp
0
1
2
ENGINE CONTROLS
STARTING THE ENGINE
CONTROLLING ENGINE SPEED

OPERATING INSTRUCTIONS
TIMBERWOLF
TW 150DHB
13
CHECK that the chipper is running smoothly.
RELEASE the catches on the feed tray and lower.
ENSURE throttle lever is moved to fast (hare) position.
PRESS the green control button. The rollers will commence turning.
STAND to one side of the feed funnel.
PROCEED to feed material into the feed funnel.
IT IS ESSENTIAL TO CARRY OUT THE FOLLOWING TESTS to check safety equipment - this sequence
of tests will only take a few seconds to carry out. We recommend that these tests are carried out daily.
Observing the function as described will confirm that the safety circuits are working correctly. This is also
a good opportunity to remind all operators of the control and emergency stop systems. Tests should be
carried out on both control boxes (located on each side of the funnel).
3
12
PRESS THE GREEN BUT-
TON
THE ROLLER
SHOULD TURN FORWARDS
PRESS THE RED
SAFETY BAR
THE ROLLER
SHOULD STOP
PRESS THE BLUE BUTTON
THE ROLLER SHOULD TURN
BACKWARDS ONLY WHILE THE
BUTTON IS PRESSED
WITH THE ENGINE RUNNING AT FULL SPEED
ADJUST the throttle lever to idle position.
ALLOW engine revs to drop and run at idle speed for 1 minute.
TURN key to position 0. The engine will continue to run for a short time before stopping.
BLADE WEAR
The most important part of using a wood chipper is keeping the cutter blades sharp. Timberwolf
chipper blades are hollow ground to an angle of 40 degrees. When performing daily blade checks
ensure blade edge is sharp and free from chips, if there is any evidence of damage, or the edge is “dull”
change the blade(s). The TW 350DHB(t) is fitted with 4 blades 180 mm (7") long. They are 100 mm
wide when new. A new blade should chip for up to 25 hours before it requires sharpening. This figure
will be drastically reduced by feeding the machine with stony, sandy or muddy material.
As the blade becomes blunt, performance is reduced. With increased stress and load on the machine
the chips will become more irregular and stringy. At this point the blade should be sent to a reputable
blade sharpening company. The blade can be sharpened several times in its life. A wear mark on the
reverse side indicates the safe limit of blade wear. Replace when this line is exceeded.
The machine is also fitted with a static blade (anvil). It is important that the anvil is in good condition
to allow the cutting blades to function efficiently. Performance will be poor, even with sharp cutter
blades, if the anvil is worn.
BEFORE USING THE CHIPPER
STOPPING THE ENGINE
WARNING Do not open or remove any guards, attempt any adjustments or
maintenance until engine has come to a complete stop.
STARTING TO CHIP
WARNING Do not use or attempt to start the chipper without the protective
guarding and discharge unit securely in place. Failure to do so may
result in personal injury or loss of life.

OPERATING INSTRUCTIONS125PH
TIMBERWOLF
TW 150DHB
14
When the chipper needs any service work that requires you to position yourself under the chipper,
appropriate supports MUST be used. To allow the supports to be installed use the rear prop stand pad
as the jacking points. Never use the axle or drop arm to raise the chipper as it will become unstable and
tip up. Position the support at the rear of the chassis rail (as shown in picture below).
When the chipper is required to be raised off the ground i.e. to change a wheel, the appropriate type
and correct rating jack must be used. It must be positioned under the rear prop stand on the same side
as the wheel to be changed.
Place the chipper on firm level ground.
Lower the jockey wheel to take the weight at the front of the chipper
Remove the spare wheel clamp and slide the spare wheel from its dock.
Chock opposite wheel to prevent chipper rolling whilst loosening and removing wheel.
Crack the wheels nuts off the required wheel. Do not remove them completely.
Place a jack under the pad of the prop stand on the same side as the wheel to be removed.
Raise the chipper off the ground allowing enough clearance to fit a fully inflated tyre/wheel.
Remove all wheel nuts and then remove the wheel from hub.
Place new wheel on hub - ensure new wheel/tyre configuration is correct specification.
Replace all the wheel nuts to hand tight but do not fully tighten them with the chipper off the
ground as this may cause the chipper to become unstable.
Lower the chipper down onto the ground and remove jack.
Use an appropriate torque wrench and tighten the wheel nuts to 240lbs ft (325Nm) in a
diagonal fashion until the entire set of wheel nuts are of the correct tension.
Check wheel nut torque after the first
20 miles then every 1000-1500 miles
thereafter.
IF IN DOUBT HAVE A QUALIFIED
PERSON CHECK WHEEL
INSTALLATION AND CORRECT
NUT TENSION AS SOON AS
POSSIBLE.
JACKING POINT / WHEEL CHANGE
WARNING
NEVER RAISE THE CHIPPER OFF THE GROUND WITH A JACK
POSITIONED UNDER THE AXLE, DROP ARM OR CHASSIS RAIL AS
THE MACHINE WILL BECOME UNSTABLE AND TIP. WHILST
SUPPORTED OFF THE GROUND NEVER POSITION ANY PART OF
YOUR BODY UNDER THE CHIPPER. THIS WILL ENDANGER ANY
PERSON IN CLOSE PROXIMITY AND MAY RESULT IN INJURY OR DEATH.

OPERATING INSTRUCTIONS
TIMBERWOLF
TW 150DHB
15
BUCKET ANGLE
4. Adjust the bucket to the desired
angle using the handle provided.
ROTATION
1. Slacken nut using
integral handle.
2. Rotate tube.
3. Retighten nut.
1
To safely lift chipper firstly securely attach large Dee
shackle rated at 4 tonnes to BS 6994 1998 in top eye
and lift vertically using 4000kg rated strop. When
being raised/lowered the machine should remain
level, to guide machine attach rope to tow head.
DO NOT ALLOW ANYONE TO STAND DIRECTLY
UNDER THE CHIPPER.
For easier accessibility the chipper can be fed through
360o on the road chassis. Locate the turntable lever (see
parts locator on page 4).
To position turntable release locking handle catch, push
down on the handle and rotate the chipper to the
position required. The handle is spring loaded and will
drop in the next locking detent if not held down. Keep
handle lowered until desired position is reached, then
release and allow chipper to lock into the nearest lock-
ing detent. Reattach locking handle catch. Remember
to adjust your discharge tube (as described above)
accordingly.
Always return the turntable to the tow position (funnel
facing back) before hitching/towing.
Note: feed tray must be closed while rotating funnel/tray
through towhead area (see diagram).
4
Lifting eye located here
DISCHARGE CONTROLS
Controlling the discharge is an essential part of safe working.
OPERATING THE TURNTABLE
SAFE LIFTING OF THE CHIPPER

TIMBERWOLF
TW 350DHB(t)
16
CHIPPING
BLOCKAGES
OPERATING INSTRUCTIONS
WARNING Do not reach into the rotor housing with unprotected hands. There
are sharp blades and any small movement of the rotor may cause
serious injury.
Always be aware that what you are putting into the chipper must come out. If the chips stop coming
out of the discharge tube but the chipper is taking material in - STOP IMMEDIATELY. Continuing to feed
material into a blocked machine may cause damage and will make it difficult to clear.
If the chipper becomes blocked proceed as follows:
STOP the chipper and remove key.
REMOVE discharge tube.
CHECK that the discharge tube is clear.
OPEN rotor housing by removing the 2 retaining nuts.
REMOVE as many chips as possible (the rotor housing does not have to be completely clear
to continue).
SHUT the rotor housing and replace both bolts securely. Torque to 60lbs ft (80Nm).
REPLACE the discharge tube.
RESTART the engine.
ALLOW machine time to clear excess chips still remaining in rotor housing before you continue feed-
ing brushwood. Feed in a small piece of wood while watching to make sure that it comes out of the dis-
charge. If this does not clear it, repeat the process and carefully inspect the discharge tube to find any
obstruction.
NOTE
Continuing to feed the chipper with brushwood once it has become blocked will cause the chipper to
compact the chips in the rotor housing and it will be difficult and time consuming to clear.
AVOID THIS SITUATION - WATCH THE DISCHARGE TUBE AT ALL TIMES.
Wood up to 230 mm diameter can be fed into the feed funnel. Put the butt end in first and engage it
with the feed roller. The hydraulic feed rollers will pull the branch into the machine quite quickly. Large
diameter material will have its feed rate automatically controlled by the engine management unit.
Sometimes a piece of wood that is a particularly awkward shape is too strong for the feed rollers to
break. This will cause the top roller to either bounce up and down on the wood or both rollers to stall.
When installed, the ‘Auto Reverse’ will back out the material a short distance then switch forward. If the
awkward piece is not broken by the rollers press the BLUE REVERSE button until the material has
been released. Pull the material out of the feed funnel and trim it so the chipper can handle it.
Both feed rollers should always turn at the same speed. If one or both rollers stop or suddenly slow
down it may be that a piece of wood has become stuck behind one of the rollers. If this occurs press
the BLUE REVERSE button then remove wood. Reposition the wood to feed into the funnel or use a
saw to cut into smaller sections. If the rollers continue to stall in the 'forward feed' or 'reverse feed' po-
sition push the RED STOP BAR, turn engine off, remove ignition key and investigate.

TIMBERWOLF
TW 350DHB(t)
17
THE FOLLOWING PAGES DETAIL ONLY
BASIC MAINTENANCE GUIDELINES SPECIFIC
TO YOUR CHIPPER.
THIS IS NOT A WORKSHOP MANUAL.
THE FOLLOWING GUIDELINES ARE NOT EXHAUSTIVE AND DO NOT EXTEND
TO GENERALLY ACCEPTED STANDARDS OF ENGINEERING/MECHANICAL
MAINTENANCE THAT SHOULD BE APPLIED TO ANY PIECE OF MECHANICAL
EQUIPMENT AND THE CHASSIS TO WHICH IT IS MOUNTED.
AUTHORISED TIMBERWOLF SERVICE AGENTS ARE FULLY TRAINED IN ALL
ASPECTS OF TOTAL SERVICE AND MAINTENANCE OF TIMBERWOLF
WOOD CHIPPERS. YOU ARE STRONGLY ADVISED TO TAKE YOUR CHIPPER TO
AN AUTHORISED AGENT FOR ALL BUT THE MOST ROUTINE MAINTENANCE
AND CHECKS.
TIMBERWOLF ACCEPTS NO RESPONSIBILITY FOR THE FAILURE OF THE
OWNER/USER OF TIMBERWOLF CHIPPERS TO RECOGNISE GENERALLY
ACCEPTED STANDARDS OF ENGINEERING/MECHANICAL MAINTENANCE
AND APPLY THEM THROUGHOUT THE MACHINE.
THE FAILURE TO APPLY GENERALLY ACCEPTED
STANDARDS OF MAINTENANCE, OR THE PERFORMANCE OF
INAPPROPRIATE MAINTENANCE, MAY INVALIDATE
WARRANTY IN WHOLE OR IN PART.
PLEASE REFER TO YOUR AUTHORISED
TIMBERWOLF SERVICE AGENT FOR
SERVICE AND MAINTENANCE.
SERVICE INSTRUCTIONS

TIMBERWOLF
TW 350DHB(t)
18
WARNING Always immobilise the machine by stopping the engine, removing
the ignition key and disconnecting the battery before undertaking
any maintenance work.
SERVICE SCHEDULE
SERVICE INSTRUCTIONS
SERVICE SCHEDULE
Check engine oil - top up if necessary (10W-30). ü
Check engine oil filter ü
Check for engine oil / hydraulic oil leaks. ü
Check feed funnel, feed roller cover, access covers,
engine covers and discharge unit are securely fitted. ü
Check blades. ü
Check tyre pressure is 4.8 Bar (70 psi). ü
Check for tightness all nuts, bolts and fastenings
making sure nothing has worked loose. ü
Check tension of main drive belts
(and tension if necessary). ü
Grease the roller box slides. ü
Grease the rotor bearings. ü
Grease the roller spline and bearings. ü
Grease the discharge flange. ü
Check anvils for wear.
ü
Check air filter element. ü
Check safety bar mechanism. ü
Check fuel pipes and clamp bands. ü
Check battery electrolyte level. ü
Check for loose electrical wiring. ü
Replace hydraulic oil filter - every year or 100 hours
after service or repair work to the hydraulic system. üü
Replace hydraulic oil. üü
Remove engine covers, blow out any dust/leaf
debris on: Cylinder cooling fins,alternator & belt
are, oil cooler
Replace fuel pipes and clamp bands.
Change engine oil.
Replace engine oil filter cartridge.
Check valve clearance.
Replace anvil when worn.
Road brake maintenance.
Axle maintenance.
Tow head maintenance.
Daily
Check
50
Hours
100
Hours
500
Hours
1
Year
REFER TO YOUR ENGINE
SUPPLIERS MANUAL
REFER TO SUPPLIERS
INSTRUCTION SHEET
NOTE: Your Timberwolf woodchipper is covered by a full 12 months parts and labour warranty. Subject to correct
maintenance and proper machine usage, the bearings are guaranteed for 12 months regardless of hours worked by
the machine. In conditions of 'heavy usage' - i.e. in excess of 500 hours per year - it is recommended that the bearings
are changed annually to ensure that the machine retains optimum working performance.
OR
OR
RETURN TO DEALER
OR AS REQUIRED - SEE PAGE 24
OR AS REQUIRED - SEE PAGE 24
OR AS REQUIRED - SEE PAGE 24
RETURN TO DEALER FOR ANVIL CHANGE

TIMBERWOLF
TW 350DHB(t)
19
HANDLE blades with extreme caution to
avoid injury. Gloves should always be
worn when handling the cutter blades.
THE drive belts should be connected
while changing blades, as this will restrict
sudden movement of the rotor.
THE major components of this machine
are heavy. Lifting equipment must be
used for disassembly.
CLEAN machines are safer and easier to
service.
AVOID contact with hydraulic oil.
ALWAYS IMMOBILISE THE ENGINE BEFORE UNDERTAKING ANY MAINTENANCE WORK ON
THE CHIPPER BY REMOVING THE KEY AND DISCONNECTING THE BATTERY.
Only fit genuine Timberwolf replacement blades, screws and chipper spares. Failure to do so
will result in the invalidation of the warranty and may result in damage to the chipper, personal
injury or even loss of life.
SAFE MAINTENANCE
BATTERY REMOVAL AND MAINTENANCE
WARNING Refer to the battery safety section on pages 20-21.
SPARES
SERVICE INSTRUCTIONS
1. Remove battery retainer.
2 Remove negative, then positive battery leads.
3. Remove battery.
1. Unscrew yellow filler (a filter strap may be
required to loosen the filter).
2. Apply a smear of oil onto the seal of the new filter.
3. Screw new filter on.
4. Hand tighten only (do not use strap to tighten).
When reinstalling the battery apply a small smear of Vaseline to the terminals.
1
WARNING
Use plastic gloves to keep oil off skin and dispose of the used oil
and filter in an ecologically sound way. The oil and filter should be
changed once a year or at any time it becomes contaminated.
Before starting check that the chipper is standing level and brush
away loose chips
CHANGE HYDRAULIC OIL AND FILTER