DIESEL P ARTICULA FIL TERS (IF EQUIPPED)

Y our new MACK chassis equipped with a 2010 emission compliant engine, with engine exhaust aftertreatment system (Diesel Particulate Filter) and selective catalytic reduction (SCR) system. V ehicles equipped with a Diesel Particulate Filter require the use - O

Premium Plus (or VDSspecification high performance diesel engine oil and Ultra Low Sulfur Diesel (ULSD) fuel.

Caution

Use diesel fuel other than ULSD and engine oils other than - O emium Plus (or VDS - will adversely affect efficiency and durability the DPF system and the the point wher e the engine may not run Manufactur ’ s warranties will also r ender void due usage impr oper Unappr oved fuel additives (including engine oil) e NOT

Mack T fers two dif ferent types DPF systems:

• Conventional DPF (passive regeneration and parked regeneration)

• Thermal Regeneration Unit (TRU) DPF (moving regeneration and parked regeneration) well two dif ferent mounting styles:

MACK V ertical Back - - Cab DPF (both conventional DPF and TRU DPF)

MACK - Cap DPF , which a space saving unit that mounted inside the frame (conventional only)

A Diesel Particulate Filter (DPF) takes the place the standard muf fler The DPF used meet A requirements help reduce soot and particulate emissions into the The particulates are removed collecting the DPF where they are eventually oxidized with passive regeneration active regeneration the filter The electrical system and exhaust aftertreatment system the vehicle will determine when regeneration Mack T uses two exhaust aftertreatment systems: conventional and

Conventional exhaust aftertreatment systems use passive - active regeneration.

The passive regeneration process oxidizes the particulates captured the DPF while the vehicle oxidation catalyst raises the exhaust temperature approximately 260°C (500°F), the temperature which a chemical reaction takes place oxidize the soot (passive regeneration)

TRU exhaust aftertreatment systems use active regeneration. Regeneration takes place after a certain number engine operating hours and begins when air/fuel mixture injected into the thermal regenerator and raises the temperature inside the unit the point where the soot oxidation takes place.

Conventional exhaust aftertreatment systems are used highway and certain vocational TRU exhaust aftertreatment systems are used mainly refuse collection

Depending how the vehicle set up, regeneration can occur while the vehicle being driven (referred a regeneration) when the vehicle parked and idling (referred a "parked" regeneration).

Caution

When active r egeneration occurs (with either system), the temperatur e the exhaust will elevated. NOT park the vehicle with the exhaust outlet under low hanging over head flammable objects such ees, awnings, that could damaged elevated exhaust temperatur NOT r emove the diffuser

Caution

the vehicle a location that may hazar dous when active r egeneration begins close oximity flammable materials the r egeneration should stopped pushing the DPF switch the active r egeneration stopped the vehicle operator , should initiated a later time when the vehicle a safe However , active r egeneration stopped r epeatedly , the vehicle may need taken a MACK service facility The service facility will use a service tool manually initiate the r

W Arning

For chassis equipped with a heated dump body , awar e that temperatur e ound the wher e the exhaust enters the body , well the oduct contained the body , may elevated, particularly during DPF r egeneration.

Extended Idling and Aftertreatment System Conditioning

Extended idling performed this vehicle equipped with exhaust aftertreatment system should carried out a low engine idle speed. There benefit using a raised engine idle speed for extended idling. The only exception for active O . Utilizing engine speed above 1300 rpm recommended for vehicles which perform extended idling with active

During periods extended normally greater than 8 the conventional DPF system needs perform a routine conditioning The conditioning cycle controlled the Engine ECU and will start and stop automatically

The A conditioning required maintain normal exhaust aftertreatment system function and should not A conditioning will not occur TRU DPF a compatible driver display available a message will displayed when the conditioning cycle The message indicated the driver ’ s display will Conditioning Progress, Action Required." driver

During these events the engine speed will increase approximately rpm, for non - O , order complete the exhaust aftertreatment conditioning cycle. Exhaust temperatures will also elevate slightly but remain much lower than those reached during regeneration and present danger .