Daewoo Korando. Manual — part 181
1F3-8 OM600 ENGINE CONTROLS
Detach line downstream of air admission filter (13).
Vacuum drops.
Faulty thermovalve
Fit the line onto air admission filter. Built up vacuum with
vacuum pump. Detach the plug from air admission line.
Vacuum drops.
Faulty filter with restriction.
Go to test step 2.
YES
NO
YES
NO
OM600 ENGINE CONTROLS 1F3-9
Test step 2
Connect vacuum pump (14) with Y adapter to PLA
vacuum unit (5). Run the engine at idle speed.
Vacuum drops to ‘0’ at approx. 30°C of the thermovalve.
Faulty thermovalve.
Defective filter with restriction.
Stop the engine. Detach the filter with restriction.
Filter with restriction is clear.
Defective filter with restriction.
YES
NO
YES
NO
1F3-10 OM600 ENGINE CONTROLS
VACUUM PUMP (SECTIONAL VIEW)
2 Suction Valve
4 Piston
5 Pressure Valve
6 Safety Valve
7 O-Ring
8 Pump Housing
9 Pump Cover
12 Lever
14 Outer Return Spring
15 Inner Spring Retainer
16 Roller Cam
17 Piston Rod
21 Inner Return Spring
23 Upper Spring Retainer
28 Piston Ring
30 Seal Ring
31 Oil Return Valve
32 Restrictor
SB To Brake Booster
SK To Vacuum Lines
OM600 ENGINE CONTROLS 1F3-11
VACUUM PUMP TEST
1 Fuel Filter
2 Vacuum Line
3 Ancillaries Connection
4 Vacuum Tester
Tools Required
201 589 13 21 00 Vacuum Tester
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