Manitowoc Published 05-09-17, Control # 014-28 7-19
16000 SERVICE/MAINTENANCE MANUAL POWER TRAIN
DIESEL PARTICULATE FILTER (DPF)
MAINTENANCE
Accumulated ash must be periodically cleaned from the DPF.
A build-up of ash can result in cold spots and compact the
ash within the DPF. This reduces the life of the filter, can
damage it, and may increase the time required for
regeneration.
In the United States, the Environmental Protection Agency
requires that cleaning of the DPF be done at a minimum
service interval of 4,500 operating hours, (roughly every two
years of one-shift operation). This cleaning requires special
tools using equipment specifically made for this purpose.
The DPF cannot be cleaned using conventional methods.
For this reason, it is recommended that the DPF be sent to
the manufacturer for cleaning, or exchanged for a clean DPF
if operation of the crane is critical. The DPF must be
removed, sent for cleaning, then the cleaned DPF or a
replacement installed.
Removing the DPF for Cleaning or
Replacement
See Figure 7-16 for the following procedure.
For inspection and/or cleaning, the DPF must be removed. It
may be re-useable.
NOTE: The DPF must be removed and replaced if engine
Fault Code 1981 or 1922 has been noted and the
DPF is contaminated with coolant.
1. Disconnect the crane’s batteries by disconnecting the
negative battery cable first and the positive battery cable
last or turn the battery disconnect to the “Disconnect”
position (see Figure 7-2
) and remove the key.
2. Disconnect the electrical wiring to the DPF (2) from the
wiring harness (16).
3. Loosen (but do not remove) V-band clamp (5) and
gasket (10), and clamp (6) and gasket (9) from the inlet
side of the DPF. Move clamps onto inlet tube.
4. Loosen screws (22), locknuts (15) and washers (23)
securing tube support bracket (13) or remove U-bolt
guillotine clamp (17) to free inlet tube assembly.
5. Disconnect inlet tube assembly (7) from engine and
DPF.
6. Loosen (but do not remove) V-band clamp (11) and
clamp (12) from the outlet side and move onto outlet
tube.
7. Disconnect outlet tube assembly (8) from DPF.
8. Mark the direction of exhaust flow, from inlet to outlet, on
the outside of the DPF (2). This will help if the DPF will
be cleaned and re-installed.
DANGER
Electrical Shock Hazard!
Ensure that the battery cables are disconnected from the
batteries before loosening any electrical connections.
WARNING!
Explosion Hazard!
Batteries can explode and emit explosive gas. To reduce
the chance of injury, always ventilate the area before
servicing the batteries. Always remove the negative
battery cable first and attach the negative cable last.
WARNING
Burn and Inhalation Hazards!
Temperature of exhaust and exhaust components for Tier
4 engines can be higher than other engines.
To prevent death or serious injury:
• Allow engine and diesel particulate filter to cool
before performing maintenance.
CAUTION
Engine Damage!
To avoid possible engine fault codes and undesirable
operation, make sure engine ignition switch has been off
five minutes before disconnecting batteries.
Do not rely on this switch to protect crane’s electronic
systems when welding. Disconnect battery cables at
batteries before welding.
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