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MBE 4000 Fuel Injectors

ADDITIONAL INFORMATION

SPECIFICATIONS

This section contains the specifications for servicing the engine. ‪

The fuel injection system torque values are listed in Table . The torque values for the injector lines are listed in Table . ‪

Fastener Type ‪

Nm (lbft) ‪

Fuel Filter Cap Nut ‪

25 (18) ‪

Fuel Return Line Fittings (at fuel gallery inlet) ‪

50 (37) ‪

Hollow-Core Banjo Bolts ‪

50 (37) ‪

Pressure Limiting Valve (at fuel gallery outlet) ‪

50 (37) ‪

Protective Sleeve ‪

45 (33) ‪

Tensioning Arm Retaining Bolt ‪

50 (37) ‪

Unit Pump Mounting Bolts ‪

65 (48) ‪

Fuel Injection System Torque Values

Fastener Type ‪

Nm (lbft) ‪

Using a 12-in. torque wrench ‪

Using a 24-in. torque wrench ‪

Required Torque on Fastener ‪

Injector Line Nuts ‪

27 (20) ‪

25 (18) ‪

30 (22) ‪

Transfer Tube Thrust Bolt ‪

40 (30) ‪

36 (27) ‪

45 (33) ‪

Injector Lines Torque Values

The former 8-pin Engine Harness Connector is identified with part number A460 150 00 33, and it is used in the engines that have one solenoid air valve for the engine brakes. Beginning with the engine serial number 739080, these current engines will have an 8-pin Engine Harness Connector with part number A460 150 01 33. The changes in the harness connections between the former and current 8-pin harness connector are Listed in Table and listed in Table . ‪

Description ‪

8-Pin Engine Harness Connector ‪

DDEC-ECU 55-Pin Connector ‪

Fan Control 1, switch to Bat- (PV3) ‪

A ‪

41 ‪

Fan Control 2, switch to Bat- (PV4) ‪

B ‪

43 ‪

Output Ground (PV) ‪

C ‪

11 ‪

Fan and Wastegate/E-Flap Voltage Supply (PV1, 3, 4) ‪

D ‪

12 ‪

Exhaust Flap/Wastegate Control, switch to Bat- (PV1) ‪

E ‪

51 ‪

Fan and Wastegate/E-Flap Voltage Supply (PV1, 3, 4) ‪

F ‪

12 ‪

Turbo Brake Control, switch to Bat- (PV6) ‪

G ‪

40 ‪

Turbo Brake Voltage Supply (PV6) ‪

H ‪

42 ‪

Former Harness Connector A460 150 00 33

Description ‪

8-Pin Engine Harness Connector ‪

DDEC-ECU 55-Pin Connector ‪

Fan Control #1, switch to Bat- (PV3) ‪

A ‪

41 ‪

Fan Control #2, switch to Bat- (PV4) ‪

B ‪

43 ‪

Compression Brake Control, switch to Bat- (PV2) ‪

C ‪

50 ‪

Fan and Wastegate/E-Flap Voltage Supply (PV1, 3, 4) ‪

D ‪

12 ‪

Exhaust Flap/Wastegate Control, switch to Bat- (PV1) ‪

E ‪

51 ‪

Compression Brake Voltage Supply (PV2) ‪

F ‪

52 ‪

Turbo Brake Control, switch to Bat- (PV6) ‪

G ‪

40 ‪

Turbo Brake Voltage Supply (PV6) ‪

H ‪

42 ‪

Current Harness Connector A460 150 01 33

The fuel control torque values are listed in Table . Listed in Table and listed in Table are the fuel system torque values. For a detailed wiring diagram of the 55-pin connector for the EPA98 (non-EGR)engine, see Figure 44581 and for a wiring diagram of the EPA04 (EGR)engine, see Figure 44582 . ‪

Fastener Type ‪

Nm (lbft) ‪

Fuel Heat Exchanger Mounting Bolts ‪

8 (6) ‪

Fuel Lines ‪

50 (37) ‪

DDEC-ECU Control Unit Mounting Bolts ‪

15 (11) ‪

Fuel Control Torque Values

Fastener ‪

Torque Value, Nm (lbft) ‪

Fuel Filter Cap ‪

25 (18) ‪

Fuel Line Banjo Bolts ‪

50 (37) ‪

Fuel Line Pipe Fittings ‪

50 (37) ‪

High-Pressure Fuel Lines ‪

30 (22) ‪

Fuel/Water Separator Mounting Nuts ‪

50 (37) ‪

Fuel Filter Housing Mounting Bolts ‪

25 (18) ‪

Fuel Pump Mounting Bolts ‪

25 (18) ‪

Fuel System Torque Values

Fastener ‪

Torque Value, Nm (lbft) ‪

Fuel Spill Line Banjo Bolt ‪

15 (11) ‪

Fuel Pump Driven Gear Bolt ‪

30 (22) ‪

Fuel Temperature Sensor to Engine Block ‪

30 (22) ‪

Fuel System Torque Values

55-Pin Connector Wiring Diagram for EPA98 Engine

55-Pin Connector Wiring Diagram for EPA04 (EGR) Engine

The torque specifications for fuel line nuts are listed in Table . The fuel system specifications for pressure are listed in Table . ‪

Component ‪

Torque ‪

Transfer Tube Nut ‪

45 Nm (33 lbft) ‪

High Pressure Line Nuts ‪

30 Nm (22 lbft) ‪

Torque Specifications for Fuel Line Nuts

Speed ‪

Pressure ‪

Fuel Pressure Test at idle rpm ‪

2 bar (29 psi) minimum ‪

Fuel Pressure Test at rated rpm ‪

5.5 6.5 bar (80 95 psi) ‪

Maximum difference between fuel filter housing inlet and outlet pressure ‪

0.3 bar (4 psi) ‪

Fuel System Specifications for Pressure