TIMBERWOLF
TW 190TDHB
17
SERVICE INSTRUCTIONS
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.
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.
SAFE MAINTENANCE
SAFE LIFTING OF THE CHIPPER
BATTERY REMOVAL AND MAINTENANCE
CHECK FITTINGS
SPARES
The Timberwolf TW190TDHB 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.
BATTERY MAINTENANCE
1. Undo the two M10 nuts on the battery cover.
2. Remove the battery cover.
3. The battery can be serviced in this position.
BATTERY REMOVAL
1. Remove the negative battery lead.
2. Remove the positive battery lead.
When reinstalling the battery apply a small smear of Vaseline to the terminals.
WARNING
Refer to the battery safety section on page 18-19.
Size Pitch Head Torque Ibs.ft Torque Nm
Blade Bolts M16 Fine 24 mm Hex 125 170
Anvil Retaining Bolts M12 Standard 10 mm Allen Key 65 88
Rotor Housing Clamp Bolts M16 Standard 24 mm Hex 60 80
Hyd Motor Retaining Cap Screws M12 Standard 10 mm Allen Key 60 81
Roller Box Retaining Bolts M16 Standard 24 mm Hex 105 140
Rotor Main Shaft Retaining Screws M12 Standard 10 mm Allen Key 105 140
Rotor Stub Shaft Retaining Screws M10 Fine 8 mm Allen Key 45 61
Large Rotor Shaft Retaining Nut M39 Nut 60 mm Hex 450 610
Funnel Retaining Nuts M12 Standard 19 mm Hex 60 80
General M8 Standard 13 mm Hex 17 23
General M10 Standard 17 mm Hex 34 46
General M12 Standard 19 mm Hex 60 80
Drain Bung in Fuel Tank 3/8” BSP - 22 mm Hex 25 33.8
Fuel Take-off in Fuel Tank 3/4” BSP - 32 mm Hex 40 54.2
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