Daewoo Musso. Manual - part 181

1F3-4  OM600 ENGINE CONTROLS

FUEL TANK

1 Fuel Tank
2 The Sender of Fuel Tank
3 2-way Check Valve
4 Pre Filter
5 Front Fuel Filler Neck
6 Rear Fuel Filler Neck
7 Fuel Supply Tube

8 Fuel Return Tube
9 Filter Hose

10 Fuel Tank Hose

11 Fuel Filler Cap

12 Clip
13 Clip

OM600 ENGINE CONTROLS  1F3-5

VACUUM CONTROL SYSTEM TEST

2 Engine Cut-Off Valve (Ignition Key Switch)
3 Auto-locking Hub Solenoid Valve
4 Engine Stop Valve Unit
5 PLA Vacuum Unit (Idle Speed Adjustment)
6 Engine
7 Vacuum Pump

8 30° Thermovalve
9 Fuel Injection Pump

10 Filter with Restriction

11 Check Valve

12 Modulating Pressure Line (Automatic T/M)

Test Data

Idle Speed Increase

Permissible Pressure Drop of System

At least 100 rpm at approx. 500mbr

400 - 500mbar approx. 1 min.

1F3-6  OM600 ENGINE CONTROLS

Temperature measuring instrument with test probe

WB24

Digital tester

Tools Required

001 589 73 21 00 Vacuum Pump

201 589 13 21 00 Vacuum Tester

667 589 00 21 00 TDC pulse generator

Commercial Tools

e.g. Bosch MOT 001.03

Sun DIT 9000

e.g. Ahlborn, Therm 2263-2

Eichenfeldstrabe 1 - 3

D-8150 Holzkirchen

Tester Connection

11 TDC Pulse Sender Unit
12 Digital Tester

OM600 ENGINE CONTROLS  1F3-7

Vacuum   500 mbar

Lines and connections leaking.
Faulty PLA vacuum unit.

Test step 1

Connect vacuum pump (14) with Y adapter to PLA
vacuum unit (5). Run engine at idle speed.

YES

NO

(Remove the connection hose from vacuum pump)

Connect vacuum pump (14) direct to PLA vacuum unit
(5) and pressurize with vacuum.

Vacuum is built up and idle speed increases approx.
150-200 rpm

YES

NO

Faulty PLA vacuum unit

(Coolant Temperature 30°C)

Stop the engine Seal the air admission line with plug.
Connect the vacuum pump to line to thermovalve and
pressurize the line with vacuum.

Vacuum is built up.

YES

NO

Lines and connectors leaking.
Faulty thermovalve.

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