Timberwolf TW 230DHB Instruction Manual

TW 230DHB

UK INSTRUCTION MANUAL

WOOD CHIPPER

timberwolf-uk.com

© Copyright Timberwolf Ltd 2017

The content of this publication may not be copied, reproduced, republished, posted, broadcast, transmitted

or used in any way in any medium without the written permission of Timberwolf Ltd.

TW 23 0DH B

CO NTE NTS

C190-0101 25.07.2017 Rev: 1.0

S

ection Page No.

I

NTRODUCTION 2
PARTS LOCATOR DIAGRAMS 3
SAFE WORKING 5

Operator’s Personal Protective Equipment Required 5
Basic Woodchipping Safety 5
General Safety Matters 5
Noise Test 6
Safe Transportation 7
Hitching onto the Tow Ball 7
Unhitching the Chipper 7
Stabilising the Chipper 7

STORAGE 8
Storing the Chipper 8
OPERATING INSTRUCTIONS 9
Recommissioning after storage 9
Delivery 9

Manual Controls 9
Auto Controls 10
Emergency Stopping 10
Engine Controls 10
Daily Checks Before Starting 10
Before Using the Chipper 10
Starting the Engine 10
Controlling the Engine Speed 11
Stopping the Engine 11
Discharge Controls 11
Starting to Chip 11
Chipping 11
Blockages 12
Blade Wear 12
Hydraulic Oil Level Indicator 12
Fuel Level Indicator 12
Refuelling 12
Troubleshooting 13

SERVICE INSTRUCTIONS 14

Service Schedule 14
Safe Maintenance 15
Safe Lifting of the Chipper 15
Spares 15
Battery Removal and Maintenance 15
Check Fittings 15
Hazardous Materials and End of Machine Life 16
Battery Safety Information 17
Change Blades 18
Tension Drive Belts 19
Change Hydraulic Oil and Filter 19
Grease the Discharge Flange 19
Grease the Roller Spline and Rotor Bearings 20
Grease the Roller Box Slides 20
Engine Servicing 20
Check Hoses 20

WARRANTY STATEMENT 21
EC DECLARATION OF CONFORMITY 22
IDENTIFICATION PLATE 23
DECALS 24
ELECTRICAL PARTS LOCATOR 26
CIRCUIT DIAGRAM 27
HYDRAULIC LAYOUT 28
V‐ BELT TENSIONING TABLE 29
WARRANTY SERVICE CHECK RECORD 30
SERVICE RECORD 31
PARTS LISTS 32

1 /

55

2220mm (1360mm with discharge removed)

3810mm (

3285mm

with feed tray folded)

1520mm

The Timberwolf TW 230DHB is designed to chip solid wood material up to 160mm
in diameter and capable of chipping over 5 tonnes of brushwood per hour.

PURPOSE

Engine type:

Kubota 4-cylinder diesel

Maximum power:

26kW (35hp)

Cooling method:

Water cooled

Overall weight:

749kg

Starting method:

Electric

Roller feed:

Twin hydraulic motors

Maximum diameter material:

160mm (6

1

⁄3 ")

Fuel capacity:

18 litres

Hydraulic oil capacity:

15 litres

Material processing capacity:

Up to 5 tonnes/hr

Fuel type:

Diesel

DIMENSIONS

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IN TRO DUC TIO N

C190-0101 25.07.2017 Rev: 1.0

Thank you for choosing Timberwolf. Timberwolf chippers are designed to give
safe and dependable service if operated according to the instructions.

IMPORTANT HEALTH AND SAFETY INFORMATION

B

efore using your new chipper, please take time to read this manual. Failure to

do so could result in:

- personal injury

- equipment damage

- damage to property

- 3rd party injuries
This manual covers the operation and maintenance of the Timberwolf TW

230DHB. All information in this manual is based on the latest product information
available at the time of purchase.

All the information you need to operate the machine safely and effectively is
contained within pages 3 to 11. Ensure that all operators are properly trained for
operating this machine, especially in safe working practices.

Timberwolf's policy of regularly reviewing and 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 an important 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 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

SPECIFICATION

Serial No. Location.

The serial number

can be found on

the identification

plate located on

the chassis beam.

S

AFETY BAR

FUNNEL

DISCHARGE
BUCKET

DISCHARGE
TUBE

CLAMP
NUTS

LIGHT
BOARD

CONTROL BOX
(each side)

ENGINE BAY SIDE
PANELS

REFLECTORS

TOW HEAD

ROTOR HOUSING

REFLECTOR

PROP STAND

MANUAL
CANNISTER

AIR FILTER

ROTOR HOUSING BLADE ACCESS

LIFTING EYE

TW 23 0DH B

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PARTS LOCATOR

C190-0101 25.07.2017 Rev: 1.0

HYDRAULIC MOTOR
GUARD

ROLLER BOX
GUARD

THE TW 230DHB HAS THE FOLLOWING FIXED GUARDS FOR PROTECTION OF THE OPERATOR, CHIPPER
AND ENVIRONMENT:

Roller Box Guard: Protects rotor housing from damage or foreign matter. Protects the user from injuries from•

moving rollers and ejected material during operation.
Hydraulic Motors Guard: Protects hydraulic motors from damage. Protects the user from injuries from heat and•

movement of motor.
Rotor Housing Blade Access: Protects user from rotational parts e.g. cutting blades. The interlocking switch•

disengages the engine when the hatch is opened to stop the chipper running.
Engine Bay Side Panels: Protects the user from rotational parts e.g. belts and pulleys, hot surfaces, and engine•

fluids. Protects machine from ingress of environmental debris.

Guards may be removed for maintenance only, as described in the Service Instruction pages of this manual. Ensure

guards remain in place throughout operation.

FEED
TRAY

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PARTS LOCATOR

C190-0101 25.07.2017 Rev: 1.0

JOCKEY WHEEL ASSEMBLY

FUEL TANK

ENGINE BLOCK

ROTOR

FAN
S

ECTION (x4)

ROTOR
PULLEY

FUEL PUMP

FUEL FILTER

CUTTER BLADE
(x2)

O

IL FILTER

STARTER MOTOR

RADIATOR

HYDRAULIC PUMP

ELECTRICAL PANEL

HYDRAULIC TANK

CONTROL PANEL

BELT TENSION ADJUSTER

IN‐LINE FUEL FILTER

DIRECTIONAL
C

ONTROL VALVE

EXHAUST

TOOL BOX CONTENTS:

Copper Ease •
Rotor locking tool •
Combination Spanner (17mm/19mm)•
Support Bracket x 2•
Lock Unit Keys x 2•
Ignition Keys x 2•
Access Cover Keys x 2•
Keyring•

DRIVE
PULLEY

5 /

55

SA FE WOR KIN G

C190-0101 25.07.2017 Rev: 1.0

ALWAYS stop the chipper engine before making any adjustments, refuelling or cleaning.•
ALWAYS check the rotor has stopped rotating and remove the chipper ignition key before maintenance of any•

kind, or whenever the machine is to be left unattended. If in doubt, look through the in-feed funnel to see if
rotor is still moving.

ALWAYS check the machine is well supported and cannot move. If working on an incline,•
position on solid ground, across the slope.

ALWAYS operate the chipper with the engine set to maximum speed when chipping.•
ALWAYS check (visually) for fluid leaks. If found, resolve the leak before operating the chipper.•
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.•
Ensure a fire extinguisher is available on site.•
Ensure a personal first aid kit and hand cleaning materials are available (e.g. waterless skin cleanser).•

ü

TW 23 0DH B

WARNING

C

hainsaw safety helmet (EN 397) fitted with mesh visor (EN 1731) and•

e

ar defenders (EN 352).
Work gloves with elasticated wrist.•
Steel toe cap safety boots (EN 345-1).•
Close fitting heavy-duty non-snag clothing. High-visability clothing (EN•

471) if risk assessment identifies the need.
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.

OPERATOR'S PERSONAL PROTECTIVE EQUIPMENT PPE

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 face mask 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.•
NEVER leave the chipper unattended when running. Machines must be supervised at all times when in use.•
In the event of an accident, stop the machine, remove the key and call the emergency services immediately.•

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.

GENERAL SAFETY MATTERS

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SA FE WOR KIN G

C190-0101 25.07.2017 Rev: 1.0

GENERAL SAFETY MATTERS

DO NOT operate chipper unless available light is•
sufficient to see clearly.

D

O NOT use or attempt to start the chipper without•
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 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 the machine•

is running.
DO NOT use the chipper inside buildings.•

Noise levels above 80dB (A) will be
experienced at the working position.
Prolonged exposure to loud noise may cause
permanent hearing loss. All persons within a
4 metre radius must also wear good quality
ear protection (EN 352) at all times to
prevent possible damage to hearing.

93.3 dB

95.2 dB

96.3 dB96.6 dB

R= 4 metres

Guaranteed Sound

Power: 120dB (A)

101.5 dB

96.8 dB

As required by Annex III of Directive
2000/14/EC “Noise Emission in the
environment by equipment for use outdoors”.
Tested according to BS EN ISO 3744:2010.

R= 10 metres

9

0

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9

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d

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C

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9

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d

B

C

a

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d

NOISE TEST

Machine: TW 230DHB
Notes: Tested chipping 120mm x 120mm corsican pine 1.5m in length

DO NOT ALLOW

THE FOLLOWING

TO ENTER THE

MACHINE, AS

DAMAGE IS

LIKELY

BRICKS STRING ROOTS BEDDING

PLANTS

STONES METAL GLASS RUBBER

CLOTH PLASTIC

TW 23 0DH B

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SA FE WOR KIN G

C190-0101 25.07.2017 Rev: 1.0

Check 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 vehicle so the ball hitch is directly below •
the tow head.

Attach breakaway cable to a strong point on the•
vehicle, not the ball hitch.

Grasp handle on tow head and push back catch with•
thumb.

Wind 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 is seated in its notch on the stem.
The chipper weight should be fully on the vehicle.

Check jockey wheel handle is secure before•
transportation. Do not overtighten jockey wheel
handle.

Release jockey wheel clamp and slide the jockey •
wheel assembly fully up.

Tighten clamp on jockey wheel assembly.•
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.•

SAFE TRANSPORTATION

HITCHING ONTO THE TOW BALL

UNHITCHING THE CHIPPER

When hitched to a vehicle the chipper handbrake
should be released and the prop stand and jockey
wheel stored in the towing position (a).

Ensure the chipper will not roll away after being •
disconnected from the vehicle.

Disconnect the electrical cable from the vehicle•
socket and stow in the dock provided on the chassis
when not in use.

Release breakaway cable and stow in the dock•
provided on the chassis when not in use.

Release the jockey wheel assembly clamp.•
Lower the jockey wheel assembly fully.•
Retighten the jockey wheel assembly clamp.•

Wind the jockey wheel assembly anticlockwise until it•
starts to take the weight of the chipper.

Grasp the handle and release the catch with your•
thumb.

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. Do not overtighten jockey
wheel handle.

The chipper is now fully detached from the vehicle.•

When towing a chipper the maximum speed limit is 60•
mph.

O

n rough or bumpy road surfaces reduce speed•

a

ccordingly to protect your machine from unnecessary

v

ibration.

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 is tight before moving.•

Keep tyre pressures•
inflated to 2.2 bar or 32
psi.

C

heck wheel nuts are•

t

ightened to 90nm or 65

lbs ft.
Clear loose chippings and debris from the machine•

before departing.
Ensure feed funnel is closed and the catch is properly•

engaged before departing.
NEVER transport any items in feed funnel.•
Ensure tow hitch lock mechanism is locked before•

transporting.

(a)

(b)

STABILISING THE CHIPPER

WARNING

D

O NOT RIDE ON

T

HE CHIPPER

W

HEN IT IS

B

EING TOWED.

When the chipper is unhitched it should be level and made
secure before starting work by applying the handbrake and
lowering the prop stand and jockey wheel (b).

During unhitched storage the chipper must be level with
the discharge chute pointing towards the towhead.

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ST ORA GE

C190-0101 25.07.2017 Rev: 1.0

STORING THE CHIPPER

P

erform the following tasks at the storage intervals indicated, following procedures described within this manual.

Storage time

Maintenance Tasks

<1

month

1‐6

months

6‐12

months

>12

months

Allow the engine to cool down.

ü ü ü ü

C

lean the chipper, removing all woodchips.

ü ü ü ü

Perform routine maintenance.

ü ü ü ü

Check all fasteners and retighten.

ü ü ü ü

Remove all fuel from the tank. NOTE: Either allow the machine to run until all fuel has been
used, or drain from the plug provided. If necessary, siphon the fuel into an approved storage
container (refer to re-fuelling section). Drain prior to moving machinery, to prevent spillage.

ü ü ü ü

Disassemble the spark plug (petrol machines) or remove battery cables (diesel machines).

ü ü ü ü

Where paint is damaged, touch up paint or treat with a lubricant. NOTE: Original paint colours
are available from Timberwolf dealers.

ü ü ü ü

Store the chipper in a dry place at +5°C to +40°C. NOTE: Timberwolf strongly recommends the
machine is stored in a sheltered location, protected from rain. If the machine is stored outside,
it must be well protected with tarpaulin.

x

ü ü ü

If relative humidity of the storage environment is > 60%, the shaft of the engine must be
rotated by hand 1-2 revolutions bi-weekly. Prior to rotating the shaft, 20 to 30 ml of engine oil
should be poured onto the bearing liner.

x

ü ü ü

Every 3 months, inspect the machine as per <1 month column.

x x

ü ü

Clean out and drain all lubrication lines, including grease pipes, coolant reservoirs, fuel lines, oil
reservoirs. Replace with new lubricants. NOTE: This should be performed at 6 month intervals
(months 6 & 12) until re-commissioned. Drain prior to moving machinery, to prevent spillage.

x x

ü ü

Release and reapply handbrake to confirm it has not become sticky or faulty.

x x

ü ü

Check and restore tyre pressure levels.

x x

ü ü

Keep machine in original container/packaging or equivalent protection and store in a location
free from extremes in temperature, at a min. temp. of +5°C and max. +40°C, humidity and
corrosive environments. NOTE: If the storage location is cold, damp or severe humidity changes
exist, adequate action should be taken to safeguard machinery.

x x x

ü

If machine is exposed to environmental conditions such as humidity during storage, inspect
bearing lubrication system for presence of water. If water is detected in the lubricant, flush out
the bearing housing and re-lubricate immediately.

x x x

ü

All breathers and drains are to be operable while in storage and/or the moisture drain plugs
removed. The machinery must be stored so the drain(s) are at the lowest point, while the
machine is in its stable position.

x x x

ü

Follow the recommissioning process before operation.

x

ü ü ü

NOTE:

Regardless of storage time, all Timberwolf machines must be in a stable, level position when unhitched from a vehicle.

Lower the Jockey wheel, unhitch and lower the prop stand, to ensure the machine is unable to roll or move
unintentionally during storage. The discharge tube must be pointing towards the tow head. Braked machines should
have the brake applied.

TW 23 0DH B

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OP ERATING INSTRUCTION S

C190-0101 25.07.2017 Rev: 1.0

RECOMMISSIONING AFTER STORAGE

E

nsure machine is stable.•

Remove all guards and check all fasteners. If necessary,•
retighten as described within this manual.

Ensure discharge tube is correctly fastened, free of•
objects or blockages and rotates around its pivot
without being directed to face the point of operation
(danger zone).

Ensure feed funnel is free from foreign objects e.g.•
tools and clothing.

Lower and raise feed funnel into its open and closed•
positions to confirm functionality.

Check fuel and hydraulic fluid levels within engine and•
reservoir and top up accordingly. *

Inspect all internal parts e.g. drive belts, taper locks•
and shaft keyways.

Check belt tension as described within this manual.•

Inspect cutting blades to confirm they are sharp and•
suitable for use.

Re-connect the battery to its positive and negative•
terminals.

Undertake electrical diagnostic continuity check, to•
confirm circuit is complete.

Check tyre pressures. •
Re-lubricate all grease pipes. Remove pipes and bleed•

the system prior to use, if necessary. *
Follow daily checks before starting, as described within•

this manual.
Start the machine. •
Run for 15 minutes at half throttle, prior to any cutting•

activity, to clear the combustion engine. Once
complete, bring the machine onto full throttle for a
further 5 minutes.

*Storage fluids should be replaced, DO NOT USE old
stagnate fluids.

DELIVERY

All Timberwolf TW 230DHB 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 5­7 which contain important health and safety information and advice.

GREEN

FORWARD

FEED

CONTROL

BLUE

REVERSE

FEED

CONTROL

RED SAFETY BAR

Do not rely on the red bar to keep the roller
stationary if it is necessary to clear or touch the
roller. Always switch off the machine and remove
ignition key before approaching the roller.

There are two control boxes, located on either side of the
feed tray.

MANUAL CONTROLS

Roller control boxes: a control box is located on either side of the feed funnel. Their function is to control the feed roller
whilst processing material. They do not control the main rotor.

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 controls.

Control Box Diagram

WARNING

DO NOT REMOVE, JAM,

DISABLE, BYPASS,

OVERRIDE OR OTHERWISE

IMPEDE THE

EFFECTIVENESS OF THE

RED SAFETY BAR.

Red Safety Bar Test
To ensure the safety bar is always operational it must be activated

once before each work session.

GREEN FEED CONTROL: forward feed - push the feed control once ­this activates the rollers and will allow you to start chipping (if the
rotor speed is high enough).

BLUE FEED CONTROL: 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 feed control.

TW 23 0DH B

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OP ERATING INSTRUCTION S

C190-0101 25.07.2017 Rev: 1.0

AUTO CONTROLS

The no stress unit controls the feed rate of the material going into the chipping chamber. When the rotor speed is
below the predetermined level the no stress unit will not allow the feed rollers to work in the forward direction. When
the rotor speed rises above the predetermined level the feed rollers will start turning without warning.

EMERGENCY STOPPING

Push the RED SAFETY BAR. The rotor will still be turning, the engine must be powered down to stop the rotor. Turn off
the engine ignition key.

ENGINE CONTROLS

The engine controls are in two locations. The engine ignition is on the control panel in the centre of the machine, and
the throttle lever is mounted on the feed funnel.

LOCATE the machine on firm level ground.•
CHECK machine is well supported and cannot move.•
CHECK jack stand is lowered and secure.•
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 below.•
CHECK (visually) for fluid leaks.•
CHECK fuel and hydraulic oil levels.•
If still hitched, ensure tow vehicle is isolated prior to•

operation of the chipper.

For parts location see diagrams on pages 3 & 4.

DAILY CHECKS BEFORE STARTING

BEFORE USING THE CHIPPER

3

1

PRESS THE GREEN FEED CONTROL

THE INFEED SHOULD TURN

FORWARDS

PRESS THE RED SAFETY

BAR

THE INFEED SHOULD STOP

PRESS THE BLUE FEED CONTROL

THE INFEED SHOULD TURN BACKWARDS ONLY

WHILE THE FEED CONTROL IS PRESSED

WITH THE ENGINE RUNNING AT FULL SPEED

STARTING THE ENGINE

Ensure throttle lever is in the slow•
(tortoise) position.

Insert key. Turn to heat.•
Heater LED comes on. •
Wait for heater LED to go out.•
Turn key to engage starter motor.•
Release key once engine starts.•

Do not engage starter motor for more
than 20 seconds ‐ allow one minute
before attempting to start. Investigate
reasons for failure to start. Refer to
Troubleshooting.

OFF

START

HEAT

ON

HOURS

COUNTER

THROTTLE LEVER

2

TW 23 0DH B

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OP ERATING INSTRUCTION S

C190-0101 25.07.2017 Rev: 1.0

STOPPING THE ENGINE

ROTATION

Slacken nut using integral1
handle.

Rotate tube.2
Retighten nut.3

1

DISCHARGE CONTROLS

Controlling the discharge is an essential part of safe working.

BUCKET ANGLE

Adjust the bucket to the desired angle
using the handle provided.

Move the throttle lever to the ‘Tortoise’ to reduce the engine speed to idle.•
Leave the engine running for 1 minute.•
Turn the power switch to position 0. The engine should stop after a few seconds.•
Remove the ignition key.•

For more detailed information refer to the Engine Owner’s Manual.

Check that the chipper is level and running smoothly.•
Release the catches on the feed tray and lower. •
Perform the “before using the chipper” tests (see page 10).•
Press the green feed control. The rollers will commence turning. •
Stand to one side of the feed funnel.•
Proceed to feed material into the feed funnel. •

STARTING TO CHIP

CHIPPING

Wood up to the recommended diameter can be fed into the feed funnel. Put the butt end in first and engage it with the
feed rollers. 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 no stress 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. If this occurs, press the BLUE
REVERSE feed control 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 feed control and
hold for 2 seconds - then repress GREEN FEED feed control. This should enable the rollers to free the offending piece of
material and continue rotating at the correct speed. If the rollers continue to stall in the 'forward feed' or 'reverse feed',
turn the engine off, remove the ignition key and investigate.

WARNING

D

O NOT USE OR
ATTEMPT TO START THE
CHIP

P

ER W

ITHOUT THE

P

ROTEC

TIVE GUAR

D

ING

AND D

ISCHARGE UNIT

SECUR

ELY IN P

LACE.

FAILUR

E TO D

O SO MAY

R

ESULT IN P

ERSONAL

INJURY OR L

OSS OF

LIFE.

CONTROLLING THE ENGINE SPEED

Always start the engine with the lever in the ‘slow’ (idle) position. With the throttle lever in the
‘fast’ position the machine is ready to chip. It MUST be fully pushed to the left to achieve a
suitable working speed. If no wood is to be chipped for a few minutes the throttle should be
returned to the ‘slow’ (idle) position.

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OP ERATING INSTRUCTION S

C190-0101 25.07.2017 Rev: 1.0

BLOCKAGES

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 engine and remove the ignition keys. •
Remove the discharge tube. Check that it is clear.•
Wearing gloves, reach into the rotor housing and scoop out the•

majority of the debris causing the blockage.
Replace the discharge tube.•
Restart the engine and increase to full speed.•

Allow machine time to clear excess chips still remaining in rotor housing before you continue feeding brushwood. Feed
in a small piece of wood while watching to make sure that it comes out of the discharge. 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.

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HYDRAULIC OIL LEVEL INDICATOR

The oil level will be visible through the tank wall. It should be within the upper and
lower level marks. Refer to filling and draining instructions on page 19.

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 230DHB is fitted with 2
blades 135mm (5") long. They are 100mm 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 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.

FUEL LEVEL INDICATOR

The fuel level can be seen through the wall of the plastic tank.

REFUELLING

When refuelling, follow standard Health & Safety practises:

Stop the engine and allow to cool before refuelling.•
Never smoke or allow naked flames nearby while refuelling.•
Store fuel away from vapour ignition sources such as fires and people•

smoking.
Never refuel at operating location, keep a distance of > 10 m to avoid creating fire hazards.•
Fuel storage containers must be approved for diesel fuel storage and clearly labelled with securely fitting caps. •
Clean area around fuel cap and use a funnel for refuelling. Replace the fuel cap securely. Do not fill the tank beyond•

the max. fill indicator.
Avoid skin contact with fuel. If it gets into eyes wash out with sterile water immediately and seek medical advice as•

soon as possible.
Always clean spillages quickly and change clothes before re-entering the work area if fuel is spilled onto garments.•

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OP ERATING INSTRUCTION S

C190-0101 25.07.2017 Rev: 1.0

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 or modifications, may invalidate warranty and/or regulatory compliance, in whole or in part.

Please refer to your authorised Timberwolf service agent for service and maintenance.

Problem Cause Solution Caution ‐ Always ensure appropriate PPE is worn.

Wood chip
ejection
stopped /
limited

Obstructed
discharge

Clear debris from discharge chute.

Ensure machine is off and keys
removed.

Loose drive belts Refer to manual & tension belts guidelines.

Ensure machine is off and keys
removed.

Broken rotor
paddles

Inspect paddles, replace broken / missing
paddle.

Ensure machine is off and keys
removed. Call engineer for repair.

Rotor does
not turn

Obstructed
discharge

Clear debris from discharge chute.

Ensure machine is off and keys
removed.

Rotor jammed

Inspect & clear infeed funnel, roller box and
rotor housing.

Ensure machine is off and keys
removed.

Drive belt issue

Inspect drive belts, replace if required.
Refer to manual & tension belts guidelines.

Ensure machine is off and keys
removed.

Slow or not
feeding

Low engine speed

Check & inspect throttle and cable. Check
throttle is set to specified speed.

Ensure machine is off and keys
removed.

Infeed rollers
jammed

Inspect & clear infeed funnel, roller box and
rotor housing.

Ensure machine is off and keys
removed.

Hydraulic oil

Check hydraulic oil level, top up if
necessary.

Ensure machine is off, cool & pressure
isn’t present within the system.

Blades dull Rotate, sharpen or replace blades.

Ensure machine is off and keys
removed.

Anvils dull

Check anvil has sharp edge, rotate, sharpen
or replace if necessary.

Ensure machine is off and keys
removed.

Obstructed
discharge

Clear debris from discharge chute.

Ensure machine is off and keys
removed.

TROUBLESHOOTING

T

his table is a troubleshooting guide to common problems.

If your problem is not listed below, or is unresolved after following the guide, please contact your Timberwolf service
agent, whose Timberwolf trained engineers can perform further fault finding. Before you call, please have this operating
manual and the machine serial number ready.

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C190-0101 25.07.2017 Rev: 1.0

SERVICE SCHEDULE

SERVICE SCHEDULE

Check water.

ü

Check radiator is clear.

ü

Check engine oil - top up if necessary (10W-30).

ü

Check for engine oil / hydraulic oil leaks. ü
Check fuel level.

ü

Check feed funnel, feed roller cover, access covers,
engine covers and discharge unit are securely fitted.

ü

Check blades.

ü

Clean air filter element.
Check tyre pressure is 2.2 Bar (32 psi).

ü

Check safety bar mechanism.

ü

Check for tightness all nuts, bolts and fastenings
making sure nothing has worked loose.

ü

Grease discharge flange.

ü

Check tension of main drive belts
(and tension if necessary).

ü

Grease the roller box slides.

ü

Grease the roller spline and bearing.

ü

Check anvils for wear.

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.

ü

ü

Replace hydraulic oil.

ü ü

Replace fuel pipes and clamp bands.
Check coolant.
Change engine oil.
Replace engine oil filter cartridge.
Check valve clearance.
Replace anvils when worn.
Axle maintenance.
Tow head maintenance.

Daily

Check

50

Hours

100

Hours

500

Hours

1

Year

REFER TO YOUR ENGINE

SUPPLIERS MANUAL

DEPENDING ON WORKING ENVIRONMENT

RETURN TO DEALER FOR ANVIL CHANGE

REFER TO SUPPLIERS

INSTRUCTION SHEET

OR

OR

OR AS REQUIRED ‐ SEE PAGE 20

OR AS REQUIRED ‐ SEE PAGE 20

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SE RVICE INSTRUC TIO NS

C190-0101 25.07.2017 Rev: 1.0

SPARES

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.

The battery can be located under the funnel.1
Remove the negative lead first and then the positive2

lead.
Clean, charge and/or top up the battery as required.3
Refitting is the reverse of removal. Apply a smear of4

vaseline to the terminals to prevent corrosion.

Size Pitch Head Torque Ib ft
Blade Bolts M16 Standard 24mm Hex 125
Anvil Bolts M12 Standard M12 Cap 65
General M8 Standard 13 mm Hex 20
General M10 Standard 17 mm Hex 45
General M12 Standard 19 mm Hex 65
Drain Bung in Fuel Tank 3/8” BSP - 22 mm Hex 15

SAFE LIFTING OF THE CHIPPER

The lifting eye is designed to lift the machine’s weight only.
Do not use hoist hook directly on the lifting eye, use a
correctly rated safety shackle. Inspect the lifting eye prior
to each use - DO NOT USE LIFTING EYE IF DAMAGED.
Maximum lift weight is 850kg, as indicated on the machine.

BATTERY REMOVAL AND MAINTENANCE

CHECK FITTINGS

The Timberwolf TW 230DHB is subject to large vibrations during the normal course of operation. Consequently there is
always a possibility that nuts and bolts will work themselves loose. It is important that periodic checks are made to
ensure the security of all fasteners. Fasteners should be tightened using a torque wrench to the required torque (see
below). Uncalibrated torque wrenches can be inaccurate by as much as 25%. It is therefore essential that a calibrated

torque wrench is used to achieve the tightening torques listed below.

WARNING

R

EFER TO THE BATTERY SAFETY

SEC

TION ON PAGE

17.

SAFE MAINTENANCE

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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 hazardous materials.•

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C190-0101 25.07.2017 Rev: 1.0

HAZARDOUS MATERIALS & END OF MACHINE LIFE

D

uring Machine Life

The following hazardous materials are supplied within Timberwolf machines:

Engine oil•
Coolant•
Battery acid•
Hydraulic oil•
Diesel•
Copper Ease•

MATERIAL SAFETY DATA SHEETS FOR HAZARDOUS MATERIALS SUPPLIED WITHIN TIMBERWOLF
MACHINES ARE AVAILABLE ON REQUEST. REFER TO THESE FOR FIRST AID AND FIRE PROTECTION
MEASURES.

Always follow recommended procedures for safe handling, removal and disposal of hazardous materials. Safety
precautions should be taken when handling hazardous materials (use of oil-resistant gloves and saftey glasses are
recommended - respiratory protection is not required). Avoid direct contact with the substance and store in a cool, well
ventilated area avoiding sources of ignition, strong oxidising agents and strong acids. Ensure hazardous spillages do not
flow into the ground or drainage system and ensure potential environmental damage is controlled safely, according to
local laws.

End of Machine Life

Follow these guidelines using approved local waste and disposal agencies for recycled materials, according to applicable
Health, Safety and Environmental laws.

Position the machine within reach of all necessary lifting equipment. •
Use tools and PPE detailed within maintenance instructions. •
Remove all hazardous materials and battery and store safely before disposal.•
Disassemble the machine structure, referring to the maintenance instructions. Pay attention to parts with•

mechanical pressure or tension applied, including springs.
Separate items that continue to have a service life. •
Separate worn items into material groups and where possible, recycle using available agencies for recycled•

materials. Common types are:

If a part is not easily separated into different material groups, it must be added to “general discarded materials”. •
Do not burn discarded materials. •
Change the machinery records to show that the machine is out of service and discarded. Supply this serial number•

to Timberwolf to close their records.

Steel
Non-ferrous metals
Aluminium
Brass
Copper

Plastic materials
Rubber
Electrical and Electronic Components
Other materials that can be recycled
Other materials that cannot be recycled