DIESEL PARTICULATE FILTER (DPF) MUFFLER OPERATING THE ENGINE IMPORTANT : If any engine oil other than CJ-4 is used, the DPF may become clogged earlier than expected and the fuel economy may drop. NOTE : If the engine is stopped once, the “Auto regeneration” mode will be activated. Prohibition of unnecessary idling operation Generally, the lower the engine speed, the lower the exhaust gas temperature is, so the PM contained in exhaust gas will not be burned, and begins to accumulate. Therefore, do not idle unnecessarily. Regeneration When there is “Regeneration” instruction sign by lamp or buzzer, immediately perform the required procedure for regeneration. IMPORTANT :
Interrupting the regeneration cycle or continuing operation while ignoring the warning signs may cause DPF and engine damage. 2. DPF regeneration process DPF regeneration process can be performed by choosing “Auto regeneration” or “Regeneration inhibit” mode according to your job conditions. For jobs not affected by hot gases emitted during regeneration, “Auto regeneration” is advisable. Auto regeneration mode When starting the engine (switch operation is unnecessary), the “Auto regeneration” mode is automatically activated.
With the auto regeneration mode on, when a specific amount of PM has accumulated, and the regeneration conditions are satisfied, the DPF will be automatically regenerated whether the tractor is in motion or parked. (See Tips on diesel particulate filter (DPF) regeneration on page 43.) In this way, work efficiency is improved. For more details, read the “Auto regeneration” section of this manual. (See Operating procedure for auto regeneration mode on page 38.) Regeneration inhibit mode After starting the engine, if the “DPF inhibit switch” is pressed to turn on the switch lamp, the “Regeneration inhibit” mode will be activated.
With “Regeneration inhibit” mode on, the PM which has accumulated inside the DPF will not be burned, unless the operator performs the regeneration work manually. The “Regeneration inhibit” mode is effective for work in poorly ventilated workspaces. For more details, read the regeneration prohibition section of this manual. (See Operating procedure for regeneration inhibit mode on page 40.) M5091,M5111 37