engine SSANGYONG MUSSO 1998 Workshop Repair Manual

1F3-18 OM600 ENGINE CONTROLS
Min. volume 150cm for 30 seconds
FUEL PUMP TEST
Notice
Before test, replace the fuel filter cartridge and fuel prefilter.
Fuel Feed Test
1. Disconnect the fuel return line (1) and seal up it with plug.
2. Insert the plastic hose (5) and put the end into the measuring
beaker (6).
3. Disconnect the vacuum line (4) from vacuum unit (engine
stop) (5) and connect the vacuum pump (7) to the vacuum
unit.
4. To avoid the engine starting, build up vacuum (approx. 500
mbar).
5. Operate the starter motor for exactly 30 seconds and
measure fuel volume in the beaker.
3

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 and
remove 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............................................... Replace5 Gasket ................................................... Replace
6 Spring Lock Washer
7 Hexagon Nuts
8 Fuel Pump

1F3-22 OM600 ENGINE CONTROLS
INJECTION NOZZLE TEST
Preceding Work : Removal of fuel injection nozzle
1. Fuel Injection Nozzle.............New : 115 - 125bar
Used : min. 100bar
A Closed Spray = good
B Stringy Spray = poor2 Tester
3 Valve

OM600 ENGINE CONTROLS 1F3-23
Tools Required
000 589 14 27 00 Tester
Notice
When testing the injection nozzle, do not place your hand into
the spray of a nozzle. The spray will penetrate deep into the
skin and destroy the tissue.
1. Connect the fuel injection nozzle to the tester (2).
Tester 000 589 14 27 00
2. Close the valve (3) and pump 5 times strongly.
3. Chatter test :
Slowly operate the hand lever at tester (approx. 1 stroke
per second). The nozzle must spray with a gentle chattering.
4. Spray pattern test :
Operate the hand lever at tester rapidly (approx. 2~3 strokes
per second).
lGood
The spray pattern shows closed and well atomized.
lPoor
The spray pattern shows split, too wide and stringy.
(Repair the fuel injection nozzle)

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 Nozzle
Difference Between Nozzles115 - 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 more
than
20 seconds and within this period no drop of fuel should
build up at the nozzle tip.

OM600 ENGINE CONTROLS 1F3-25
INJECTION NOZZLES
1 Fuel Injection Nozzle.............................35-40Nm
2 Fuel Return Hose
3 Plug
4 Nozzle Washer....................................... Replace
5 Fuel Injection Pipe.....................................18Nm

1F3-26 OM600 ENGINE CONTROLS
Tools Required
001 589 65 09 00 Serration Wrench
Removal & Installation Procedure
1. Remove the plastic clip from the injection pipe
2. Remove the fuel return hose.
3. Disconnect the injection pipes from the injection nozzles and
push them to the side.
4. Remove the fuel injection nozzle.
Serration Wrench 001 589 65 09 00
Notice
Replace the washers.
5. Installation should follow the removal procedure in the
reverse order.
Notice
Pay attention to the installation position of new nozzle washer
and tightening torque

OM600 ENGINE CONTROLS 1F3-27
INJECTION NOZZLE REPAIR
Preceding Work : Removal of fuel injection nozzle
1 Nozzle Holder
2 Steel Washer
3 Compression Spring
4 Thrust Pin5 Intermediate Disc
6 Nozzle Needle
7 Nozzle Body
8 Nozzle Tensioning Nut................................80Nm