SB_273-014_Engine_Sensor_Locations_(Nov._19,_2008)[1].pdf

Service Bulletin Trucks

Mack Trucks, Inc. Allentown, PA USA

(Also applies to Mack Trucks Australia) (Supersedes SB273014 dated 05/28/08)

Date

Number

Page

11/19/08

SB273014

1(4)

Engine Sensor Locations MP7, MP8

SB273014, Engine Sensor Locations (November 2008) Locations and part numbers for sensors used on MACK MP7 (US07 only) and MP8 engines are outlined in the following illustrations and part number tables. 1

Figure 1 — MP8 Engine Sensor Locations (Left Side) Key 1 2 3 4

Qty. 1 1 1 1

Part No. 20524936 20524936 20738963 20513343

Description Boost Pressure Sensor Boost Temperature Sensor Inlet Humidity/Temperature Sensor Crankshaft Speed Sensor (Requires shim 20556179)

5 6

1 1

20796744 20898038

Crankcase Pressure Sensor AHI Fuel Pressure

7

1

20886108

Oil Pressure Sensor

8 9 10

1 1 1

20898038 N/A 21042447

Fuel Pressure Sensor Barometric Pressure Sensor (integral par t of the EECU) Oil Level/Temperature Sensor

11

1

20930137

EGR Differential Pressure Sensor

Mack Trucks, Inc. Service Bulletin

Date

Number

Page

11/19/08

SB273014

2(4)

2

Figure 2 — MP8 Engine Sensor Locations (Right Side) Key

Qty.

Part No.

Description

1

1

20513343

Camshaft Position Sensor (Requires shim 20556179)

2

1

21010707

EGR Temperature Sensor

3

1

20513340

Coolant Temperature Sensor

4

1

20837313

Turbocharger Wheel Speed Sensor

Mack Trucks, Inc. Service Bulletin

Date

Number

Page

11/19/08

SB273014

3(4)

3

Figure 3 — MP7 Engine Sensor Locations (Left Side) Key

Qty.

Part No.

Description

1

1

20524936

Boost Pressure Sensor

2

1

20524936

Boost Temperature Sensor

3

1

20796744

Crankcase Pressure Sensor

4

1

20930137

EGR Differential Pressure Sensor (For US04, sensor was located on the front right area of engine)

5

1

20513343

Crankshaft Speed Sensor (Requires shim 20556179)

6

1

20738963

Inlet Humidity/Temperature Sensor

7

1

N/A

Barometric Pressure Sensor (integral part of the EECU)

8

1

20898038

AHI Fuel Pressure (used with catalyzed DPF system only)

9

1

20898038

Fuel Pressure Sensor

10

1

21010707

EGR Temperature Sensor

11

1

21042447

Oil Level/Temperature Sensor

Mack Trucks, Inc. Service Bulletin

Date

Number

Page

11/19/08

SB273014

4(4)

4

Figure 4 — MP7 Engine Sensor Locations (Right Side) Key

Qty.

Part No.

Description

1

1

20513343

Camshaft Position Sensor (Requires shim 20556179)

2

1

20513340

Coolant Temperature Sensor

3

1

20886108

Oil Pressure Sensor

4

1

20837313

Turbocharger Wheel Speed Sensor