New Holland T4.85 Service Manual page 71

Engine - Exhaust Gas Recirculation (EGR) - Diesel Particulate Filter (DPF) exhaust treatment
6. Unscrew the pressure differential unit (1) with its pipes,
brackets, clamps and sensor.
7. Unscrew the temperature sensor (2).
8. Unscrew the filter's upper heat shield (1), the lower one
stays in position.
9. Mark the filter as shown in the figure.
NOTE: The right-hand marking must include the first part
of the filter, the central part of the filter (1), and the clamp
that joins them (2). The left-hand marking will include the
central part, the left-hand part, and the clamp (3).
10. Loosen the clamp (1) joining the muffler to the DPF
outlet pipe. The clamp (2) that keeps the outlet tube
of the filter parallel to the first section of the filter.
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