Changing Oils and Filters On the TC48 / TC55
TC48DA – for PIN #'s HV11282 and above
TC55DA – for PIN #'s HX11752 and above
Before performing any
of the following operations, be sure that engine is stopped and has been given
adequate time to cool down
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Changing the Engine Oil and Filter
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While engine is still somewhat warm
take out drain plugs and drain oil
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Put plugs back in
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Remove old oil filter (be careful
as oil will drain from filter)
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Apply
a small amount of engine oil to the rubber seal of the new filter
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Tighten filter until it touches the mounting surface
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Tighten filter an additional ¾ turn by hand
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When a new filter is installed,
engine oil typically decreases a little. Ensure that oil does not leak
through the seal of the filter, then refill oil as needed.
Change oil and filter after first
50 hours and every 100 subsequent hours under normal conditions. If operating
under sever conditions change every 70 hours after the first change. |


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Draining the Fuel Filter
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Ensure that there is fuel in the
tank
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Close fuel shutoff valve (so that
the handle is pointing towards the “C”)
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Take fuel sediment bowl off
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Open fuel shutoff valve and allow
it to flow until only fuel is flowing from the filter base, no water
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Close shutoff valve
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Reattach fuel sediment bowl
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Open fuel shutoff valve
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Bleed fuel system
Drain fuel filter after every 100
hours of use
Changing the Fuel Filter
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Close fuel shutoff valve (so that
the handle is pointing towards the “C”)
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Take fuel sediment bowl off by
rotating the retaining nut
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Open fuel shutoff valve and allow
it to flow until only fuel is flowing from the filter base, no water
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Install new fuel element
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Check the two O rings for any
damage and replace them as needed
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Install the spring between the
bottom of the fuel filter and the sediment bowl
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Reattach the sediment bowl
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Open fuel shutoff valve (so that
the handle is pointing towards the “O”)
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Bleed fuel system
Replace fuel filter after the
first 50 hours of use, and then after every 200 subsequent hours |

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Bleeding the Fuel System
Fuel system needs to be bled for the
following reasons:
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System has been drained
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Filter has been replaced
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Tractor has run out of fuel
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Fuel lines have been disconnected
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Injection pump has been replaced
To bleed fuel system:
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Ensure that there is fuel in the
tank
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Open shutoff valve (so that the
handle is pointing towards the “O”)
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Open the bleed screw on the fuel
pump
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Close bleed screw when air-free
fuel begins to flow
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Put throttle in the highest speed
position
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Turn engine over for a few seconds
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Bleeding the Injector Lines
Injector lines need to be bled for
the following reasons:
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Tractor has run out of fuel
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Injectors have been replaced
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Injection pump has been removed
To bleed injector lines:
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Loosen injector line fittings at
the injectors
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Push hand throttle to highest speed
position
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Crank engine until air-free fuel
flows from each connection (do not crank engine continuously for more than 30
seconds)
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Tighten fittings to 18-22 ft-lbs
(24-29Nm) of torque
If air remains in the system,
repeat the above steps |

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Changing the Air Cleaner Elements
TC48DA – PIN#'s before HV11312
TC55DA – PIN #'s before HX12681
Outer Element
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Remove wing nut and air cleaner
cover (end cap)
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Pull outer element out of assembly
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Clean loose dirt from element
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Check the end of the canister for
dirt
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Blow compressed air (under 30psi)
from the inside of the filter to clean it
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Check inner diameter seals for
damage (if damaged, replace element)
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Push primary element back into
canister and reinstall end cap by pushing it towards the canister, and
rotating clockwise
Inner Element
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Remove air cleaner cover and outer
element to expose the inner element
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Put a light inside the element. If
little or not light shines through, the element is clogged. In this case it
must be replaced.
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Push element into canister, and
reinstall outer element and cover
Element needs to be replaced after
every third primary element cleaning, or after every 1000 hours, whichever
comes first
Changing the Air Cleaner Elements
TC48DA – PIN #'s at or above
HV11312
TC55DA – PIN #'s at or above HX12681
Outer Element
-
Remove air cleaner cover
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Pull outer element out of assembly
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Clean loose dirt from element
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Check the end of the canister for
dirt
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Blow compressed air (under 30psi)
from the inside of the filter to clean it
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Check inner diameter seals for
damage (if damaged, replace element)
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Put a light inside the element to
look for holes in the paper, or bonding of the paper to the end plate (if
above damage is found; replace element)
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Push primary element back into
canister and reinstall
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Clamp air cleaner cover into place
Outer element needs to be cleaned
after every 100 hours of use under normal conditions. Clean more often if
operating in excessively dusty conditions.
Inner Element
-
Remove air cleaner cover and outer
element to expose the inner element
-
Put a light inside the element. If
little or not light shines through, the element is clogged. In this case it
must be replaced.
-
Push element into canister, and
reinstall outer element and cover
Element needs to be replaced after
every third primary element cleaning, or after every 1000 hours, whichever
comes first
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Changing the Transmission, Rear
Axle, and Hydraulic System Oil
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Oil drains best when engine is at
operating temperature, but not hot
-
Remove the filler plug and drain
plugs to drain oil
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Reinstall drain plugs
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Fill with Ambra Multi G134
hydraulic oil to correct level on dipstick
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Replace dipstick and filler plug
Oil capacity – 11.1 gallons (42
liters)
Change transmission, rear axle,
and hydraulic system oil after every 300 hours of use
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Changing the Power Steering Oil
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Oil drains best when engine is at
operating temperature, but not hot
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Take out drain plug to drain oil
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Put drain plug back in
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Turn the filter / reservoir
assembly counterclockwise to detach it
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Apply
a small amount of oil to the rubber seal of the new filter
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Tighten filter until it touches the mounting surface
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Tighten filter an additional ¾ turn
by hand
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Remove filler plug / dipstick and
fill the reservoir with Ambra Multi G 134 hydraulic oil
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Put filler plug / dipstick back in
Power steering oil needs to be
changed after every 600 hours of use
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Hydraulic Filter
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Remove old filter
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Apply
a small amount of oil to the rubber seal of the new filter
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Tighten filter until it touches the mounting surface
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Tighten filter an additional ¾ turn
by hand
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Run engine and check filter for
leaks
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Stop engine
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Check hydraulic oil level and
refill as needed
Replace hydraulic filter after
first 50 hours and then after every 300 subsequent hours
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Changing the Front Axle
Differential Case and Final Reduction Gear Case Oil (Front-Wheel Drive)
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Take out drain plug and drain oil
while it is still warm
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Put drain plug back in
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Take out dipstick / filler plug
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Fill axle with Ambra Multi G 134
hydraulic oil
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Put dipstick / filler plug back in
Oil Capacity – approximately 1.5
quarts (1.4 liters)
Front axle differential case and
final reduction gear case oil should be changed after every 300 hours of use
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