Timberwolf TW 190TVGTR, Manual, Page: 23 / 56

22
SERVICE INSTRUCTIONS
TIMBERWOLF
TW 190TVGTR
The TW 190TVGTR 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. 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.
SAFE MAINTENANCE
Solidly support the under carriage if it
needs to be lifted up for maintenance.
Hydraulic systems may get very hot after
working.
Keep all components in good condition as
they are exposed to high pressures.
Immediately repair damage and replace
worn or broken items.
Keep the tracks clean, removing excess
oil, grease and dirt.
Check for oil leaks and damaged hoses.
Only use recommended lubricants. Do
not mix different brands.
Keep track stretcher grease nipples clean.
Maintenance intervals are only guidelines. The amount of times maintenance is conducted should be
increased beyond recommended guidelines if severe conditions are encountered.
To fill with oil, track the machine until the gearbox casing is level with a
plug positioned at 12 o’clock as shown. Unscrew the two plugs and fill
from the upper hole until oil reaches the level of the lower hole.
NOTE - Ensure the correct grade of oil is used:
Gear Oil EP80W-90 GL5
To drain the oil, track the machine until a plug is at 6 o’clock as shown.
Unscrew both plugs and allow oil to discharge into a suitable container.
Dispose of waste oil in a safe and approved way.
We recommend, for track drive gearboxes, using gear oils with E>P. additives and viscosity to SAE
80W/90 or ISO VG 150. Continuous duty temperature must not exceed 90
o
C.
OIL FILL
MAXIMUM LEVEL
DRAIN PORT
VENTING
REPLACEMENT OF OIL IN THE TRACK DRIVE UNIT
DRAINING THE OIL IN THE TRACK DRIVE UNIT
REDUCTION UNIT OIL TYPES
CHECK FITTINGS
Size Pitch Head Torque Ibs.ft
Blade Bolts M16 Fine 24 mm Hex 125
Anvil Retaining Bolts M12 Standard 10 mm Allen Key 65
Rotor Main Shaft Retaining Screws M12 Standard 10 mm Allen Key 65
Rotor Stub Shaft Retaining Screws M10 Fine 8 mm Allen Key 45
Large Rotor Shaft Retaining Nut M39 Nut 60 mm Hex 450
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 25
Fuel Take-off in Fuel Tank 3/4” BSP - 32 mm Hex 40
TRACK BASE MAINTENANCE