Daewoo Musso. Manual - part 182

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