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Service Notes

Information contained in this publication was in effect at the time the publication 
was approved for printing and is subject to change without notice or liability. 
WABCO reserves the right to revise the information presented or to discontinue the 
production of parts described at any time.

WABCO

 Maintenance Manual 31 (Revised 08-18)

About This Manual

This manual provides service and repair procedures for the WABCO 
System Saver 318 air compressor.

Before You Begin

1.

Read and understand all instructions and procedures before 
you begin to service components.

2.

Read and observe all Warning and Caution hazard alert 
messages in this publication. They provide information that can 
help prevent serious personal injury, damage to components, 
or both.

3.

Follow your company’s maintenance and service, installation, 
and diagnostics guidelines.

4.

Use special tools when required to help avoid serious personal 
injury and damage to components.

Hazard Alert Messages and Torque 
Symbols

WARNING

A Warning alerts you to an instruction or procedure that you 
must follow exactly to avoid serious personal injury and 
damage to components.

CAUTION

A Caution alerts you to an instruction or procedure that you 
must follow exactly to avoid damage to components.

@

 This symbol alerts you to tighten fasteners to a specified torque 

value.

How to Obtain Additional Maintenance 
and Service Information

Visit Literature on Demand at meritor.com. WABCO publications are 
also available on our website: wabco-na.com.

WABCO Customer Care

Call WABCO North America Customer Care at 855-228-3203.

How to Obtain Tools and Supplies 
Specified in This Manual

Call Meritor’s Commercial Vehicle Aftermarket at 888-725-9355 to 
obtain tools and supplies.

Содержание System Saver 318

Страница 1: ...NON THROUGH DRIVE THROUGH DRIVE SYSTEM SAVER 318 AIR COMPRESSOR FOR MACK E TECH AND ASET ENGINES MAINTENANCE MANUAL...

Страница 2: ...Follow your company s maintenance and service installation and diagnostics guidelines 4 Use special tools when required to help avoid serious personal injury and damage to components Hazard Alert Mes...

Страница 3: ...2 Operation Maintenance Intervals Cylinder Head 3 Visual Inspection 4 Section 2 Troubleshooting 7 Section 3 Compressor Replacement Compressor Replacement Information Removal 8 Installation Cylinder He...

Страница 4: ...Notes...

Страница 5: ...ing above 250 psi in the event of a blocked discharge line or other malfunction Figure 1 1 Description The WABCO System Saver 318 air compressor provides and maintains air under pressure to operate de...

Страница 6: ...valve to open 3 Unloading Air passes from the cylinder to the inlet chamber of the cylinder head via a port controlled by a sliding leaf valve When system cut in pressure is reached air is exhausted f...

Страница 7: ...maintenance program Figure 1 5 Figure 1 5 Figure 1 5 1003376b Check air inlet and discharge ports between compressor and governor Check under plate or at power steering pump for leakage Check water p...

Страница 8: ...urer s oil and filter maintenance schedules are followed Restricted air inlet or excessive vacuum present at compressor inlet Verify engine or compressor air cleaner is functioning correctly Replace i...

Страница 9: ...Refer to air dryer manufacturer s service instructions Chafed or worn discharge line Replace faulty sections of discharge line Loose or leaking air line connections Verify all connections are secure T...

Страница 10: ...orn or damaged unloader piston O ring porosity in unloader piston bore loose or leaking seal at unloader piston bore Replace compressor cylinder head assembly Compressor head gasket failure Discharge...

Страница 11: ...The front of the WABCO System Saver 318 air compressor is mounted to the engine Before you remove the compressor make sure you have a replacement gasket to install with the new compressor Mack part nu...

Страница 12: ...al to verify that the installation is to the correct specifications 8 Add engine coolant to the cooling system Use the coolant recommended by the engine manufacturer Visually inspect the engine and co...

Страница 13: ...leaf The two holes in the sliding leaf must be installed over the two pins on the base of the cylinder head Figure 3 6 Figure 3 6 3 Position the inlet valve on the bottom of the cylinder head Align t...

Страница 14: ...sor does not reach governor cutout pressure check for air leaks in the system If reservoir volume and engine RPM are per original vehicle manufacturer s specifications system plumbing leakage must be...

Страница 15: ...in 40 countries For more information visit www wabco na com NYSE WBC is a leading global supplier of technol ogies and services that improve the safety efficiency and con nectivity of commercial vehi...

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