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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