2003 SSANGYONG MUSSO fuel pressure

OM600 ENGINE CONTROLS 1F3-19
Fuel Pressure Test

1F3-20 OM600 ENGINE CONTROLS
Tools Required
617 589 04 21 00 Tester
1. Disconnect the fuel line (2) from the fuel filter.
2. Remove the banjo bolt (4) from the fuel injection pump andremove the seals (3) and fuel line (2).
3. Connect the tester (5).
4. Start the engine and read off the fuel pressure on tester (5). Notice If out of standard, replace the fuel feed pump.
Tester 617 589 04 21 00
5. Stop the engine. At Idle Speed
At Full load
> 0.3bar > 0.5bar
6. Remove the tester.
7. Replace the seal and connect the fuel line (2).

OM600 ENGINE CONTROLS 1F3-21
FUEL PUMP
1 Fuel Injection Pump
2 Pressure Line............................................ 13Nm
3 Suction Line
4 Hose Clip ............................................... Replace 5 Gasket ................................................... Replace
6 Spring Lock Washer
7 Hexagon Nuts
8 Fuel Pump

1F3-24 OM600 ENGINE CONTROLS
5. Opening pressure test :Open the valve (3) and slowly operate the hand lever at tester (approx. 1 stroke / second) and measure opening pressure. Notice If out of standard, repair the injection nozzle.
New Nozzle Used NozzleDifference Between Nozzles 115 - 125bar
Min. 100bar Max. 5bar
6. Leak test Slowly operate the hand lever at the tester until get a
pressure of approx. 90bar. Maintain this pressure for morethan 20 seconds and within this period no drop of fuel should build up at the nozzle tip.

OM600 ENGINE CONTROLS 1F3-29
7. Check the fuel injection nozzle and adjust opening pressureif necessary. Opening pressure adjustment Disassemble the fuel injection nozzle and replace the steel washer (2). Notice Each 0.05mm thickness of the washer results in a pressure
difference of approx. 3bar.

OM600 ENGINE CONTROLS 1F3-47
2. Remove the connecting rod (9).
3. Disconnect the vacuum lines (13, 14).
4. Remove the accelerator control damper (10).(Manual transmission vehicle)
5. Remove the suction line (16) and pressure line (4).
6. Remove the banjo bolt (1) and then remove the seal (2) and fuel line (3).
7. Remove the plastic clip (8) on the injection line.
Removal Procedure
1. Position then no.1 cylinder at 15
° ATDC.
Notice Do not rotate the engine in opposition direction of engine rotation.
8. Disconnect the injection lines (15) from the injection pump (25).
9. Remove the banjo bolt (1) and then remove the seal (7) and return line (5).

1F3-50 OM600 ENGINE CONTROLS
10. Connect the fuel pipesNotice Replace the seal. Box Wrench Insert 000 589 77 03 00
Return Line Fuel Injection LineFuel feed LineSuction and Pressure Line 46 Nm18 Nm13 Nm13 Nm
5. Coat the new seal (23) with engine oil and install it.
6. Insert the fuel injection pump (25) and tighten the bolts
(22).
7. Remove the locking screw (32).
Tightening Torque 23 Nm
8. Tighten the bolt(12).
9. Insert the washer (21) and tighten the bolts (20) and then remove the assembly cage (29).
Tightening Torque 23 Nm
Tightening Torque 46 Nm

5A-18 AUTOMATIC TRANSMISSIONINTRODUCTION
The BTR Automotive Model 74 Four Speed Automatic Transmission is an electronically controlled overdrive four
speed unit with a lock-up torque converter. The lock-up torque converter results in lower engine speeds at cruise and
eliminates unnecessary slippage. These features benefit the customer through improved fuel economy and noise
reduction. Refer to table 1.1 for details of power, torque and configuration.
Of primary significance is the transmission control unit (TCU) which is a microprocessor based control system. The
TCU utilizes throttle position, rate of throttle opening, engine speed, transmission output speed, transmission sump
temperature, gear selector position and mode selector inputs, and in some applications a ‘kickdown’ switch to control
all shift feel and shift schedule aspects.
The TCU drives a single proportional solenoid multiplexed to three regulator valves to control all shift feel aspects.
The output pressure of this solenoid is controlled as a function of transmission sump temperature to maintain consistent
shift feel throughout the operating range.
Shift scheduling is highly flexible, and several independent schedules are programmed depending on the vehicle.
Typically the ‘NORMAL’ schedule is used to maximise fuel economy and driveability, and a ‘POWER’ schedule is used
to maximise performance. ‘WINTER’ schedule is used to facilitate starting at second gear.
Figure 1.1 details the differences between conventional and electronic transmission control systems.
Max Torque (Nm)
320 Configuration
260 mm Torque Converter Wide Ratio Gear Set
Splined Output for Transfer CaseMin Torque (Nm) 160
Model
M74 4WD
Transmission
Table 1.1 - M74 Torque, Power and Configuration