Oil Filters Change

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Hot oil can cause severe NOT allow hot oil contact the When changing wear protective

Caution

MACK - branded oil filters are designed provide the proper level filtration and protection for MACK engines. Filters that not meet the same stringent requirements may cause unsatisfactory results.

1 Coat the filter gasket with

2 Install the filter and turn hand until the gasket makes contact with the sealing surface.

3 Manually turn the filter additional 3/4 one full

Checking Oil Level CAUTION

NOT let the oil level fall below the marking the NOT overfill the level above the upper marking the This could lead excessive oil temperature and/or poor crankcase breather

Ensure that the vehicle parked level ground before checking the oil W ait five minutes after shutting f the then proceed with checking

Engine Air Filter

The air cleaner prevents dust, dirt and other harmful contaminants from entering the engine through the air intake Maximum engine protection can only achieved through regularly scheduled maintenance practices that include periodic air intake system inspections and air filter element

The most ficient method determining air filter element change intervals regularly checking the air filter restriction which may either mounted directly the air cleaner canister , the air cleaner outlet tube inside the The restriction gauge measures the amount restriction the air filter Some chassis may have a dash - mounted dial - type restriction gauge which measures filter restriction mm/inchesof water

Change the air filter element accordance with the procedures when the restriction gauge red signal locks full view , the dash - mounted gauge indicates inlet restriction follows:

Mounted Gauge Inlet Restriction Indication

Damage the air filter element, such holes the filter medium, will give inaccurate restriction reading. Therefore, even maximum restriction not indicated, the air filter element should changed yearly 160 000 (100,000 mile) intervals, whichever comes first.

When replacing the air filter element, whenever the air inlet system has been disassembled, inspect the inlet air ducts between the air cleaner canister outlet and the turbochar ger inlet follows:

• Inspect the rubber elbows for splitting and/or Rubber components must flexible that they conform the plastic ducts and ensure a tight

• Inspect plastic ducts for cracks and/or holes.

• Ensure that all hose clamps are properly installed and tightened

• Make sure the plastic ducts not rub against any components such air conditioning hoses, wire harnesses,

T o properly install a new filter element:

1 W ipe the air cleaner housing clean.

2 Remove the filter

3 Inspect sealing areas for dirt tracks which would indicate that dust has leaked past the seal. dirt tracks are found, the cause must determined and corrected.

4 Thoroughly clean the inside the air cleaner canister with a damp cloth vacuum cleaner

5 equipped with a metal canister , inspect inside the canister for rust. rust present:

1 Remove the air cleaner canister from the

2 Remove all loose rust with a wire brush a coarse Scotch Brite pad.

3 Sand with 180/240 grit wet dry sand paper

4 Thoroughly wash the area with PPG440,436, - 437 equivalent, wax and grease remover and wipe dry .

5 Prime immediately with PPG DEP - 351 epoxy primer .

6 Reinstall the air cleaner canister .

6 Inspect the sealing areas the housing for Repair replace necessary .

7 Use MACK - approved replacement elements and gaskets. Make sure the new elements and gaskets are not damaged. sure use new gaskets each time the element changed. Install the cover and, depending upon cover configuration, tighten follows:

• Air cleaner with lar wing nut center cover hand - tighten wing

• Air cleaner with three thumb screws around outer edge cover hand - tighten thumb

• Air cleaner with retaining nuts around outer edge cover tighten retaining nuts between 1 1 – –ft).

Note: NOT attempt clean the air filter element with compressed air , this could damage the filter medium and possibly result severe engine

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Replacement Parts and Filters

Selective Catalytic Reduction (SCR) Catalyst

Aftertreatment DEF Dosing Unit

Aftertreatment Diesel Particulate Filter (DPF)

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System

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Selective Catalytic Reduction (SCR) Catalyst

Aftertreatment DEF Dosing Unit

Aftertreatment Diesel Particulate Filter (DPF)

DEF T ank

Danger

The SCR/DPF shield should not removed while the vehicle

Also, only remove the shield, once the vehicle out use and the SCR/DPF suf ficiently Failure follow these instructions can result which can cause component personal injury

Caution

The Diesel particulate filters and their can not moved altered from the OEM installation any Any alterations may cause component damage and prohibited the law important note that additional shielding may , depending upon conditions and the material substance, trap flammable substances between the additional shield and the DPF/SCR. this condition can develop, advise the user the vehicle periodically check ensure there are trapped substances.

Check the vehicle equipped with a Diesel Particulate Filter (DPF) a DPF and Selective Catalytic Reduction unit (SCR). These components are part the overall vehicle emissions control system. normal operation, these components can experience surface temperatures high 350° C (662° F). important verify the temperature which the material substance in, associated with, the body can ignite. possible for the material substance fall leak from the body , take steps prevent them from contacting collecting the DPF SCR. Failure may result fire.

Note: The DPF/SCR and associated components e part a U.S. A and California Air Resour ces Board (CARB) certified engine emissions system. These components must not moved, alter modified any way . T ampering with these systems r ender the emissions warranty void and may r esult possible tampering charges the A CARB.

New stringent standards for exhaust emission control begin with the 2010 model year . The Diesel Particulate Filter (DPF) system has been developed act combination with Ultra Low Sulphur Diesel (ULSD) fuel reduce particulate emissions meet the requirement. The Exhaust After - T reatment System (EA TS) includes all the engine and exhaust emissions control components that are required meet the stringent 2010 standard.

Particulate matter consists soot and ash the exhaust that engines with EGR system alone, are not equipped handle. The particulate matter considered a contaminant that contains undesirable elements. The DPF system reduces the unwanted elements a more acceptable level defined the regulations. There are multiple methods reducing these emissions. MACK has selected use a Diesel Oxidation Catalyst (DOC) with a catalyzed diesel particulate filter . The other uses a diesel particulate filter a dif ferent kind without a DOC and its place uses a combustion chamber heat the exhaust mixture thus causing active regeneration.

The particulate matter removed from the exhaust collects the filter T o avoid eventual blockage, which would increase exhaust back pressure and fect power and fuel economy , the filter must The DPF cleaned automatically The soot breaks down safer substances before being released the Some the ash but takes a long time reach the point where ash clogs the filter

Cleaning a filter can continue function called “regeneration.” Either system uses high heat break down the chemical Depending vehicle the engine equipped with a passive active regeneration regeneration,” the exhaust produces enough heat continuously convert the with approximately 260 (500 °F) being The process slow and continues indefinitely Passive regeneration possible only vehicle applications where the temperature likely remain above the required temperature making active regeneration unnecessary

During active the temperature the filter must raised 500 ° C (932 ° T o produce this the system uses a hydrocarbon injector

Aftertreatment Fuel (AF) injector introduce fuel into the exhaust stream leaves the turbochar ger The hot exhaust ignites the fuel which produces the regeneration When the DPF becomes restricted a minimum the engine ECU starts the fuel injection into the When the air flow rate returns normal through the DPF , the engine ECU turns the injector

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Prior ever working the exhaust, allow time for the entire exhaust system cool. Failure may result personal injury . Severe burns can occur .