0170 - Checking/adjustment of vacuum control valve for automatic transmission Engines 601, 602.91, 603.91 (note deviations for off-road vehicles) · ra07016010170x · Mercedes-Benz WIS

07.1-170 Checking and adjusting vacuum control valve for automatic transmission

Job no. of Job Texts and Work Units or Standard Texts

and Flat Rates 27-0035 and 0037 and 0038

0170 - Checking/adjustment of vacuum control valve for automatic transmission
Engines 601, 602.91, 603.91 (note deviations for off-road vehicles)

Vacuum tester (019) to damper (72) of
vacuum line

connect and read vacuum at idle speed (set values and test values see next page).

With engine switched off, move control to full-load stop position.
Set value: 0 mbar, adjust vacuum control valve if required. Check vacuum lines, check vacuum pump, renew vacuum control valve.

Mounting screws (65c)

loosen, fully open throttle until the control lever of the injection pump contacts the full-load stop. Turn vacuum control valve (65) in the direction of the arrow until resistance can be felt. In this position secure vacuum control valve.

Special tool

Test and adjusting values, characteristics

Engine	Pressure control flap		Cap identification	Part no.	ARF valve identification	Vacuum adjustment mbar
	mech.	pneu.
601, 602, 603 without ARF	-	-	red	123 300 07 33	-	420  25
601, 602, 603 with ARF and automatic transmission	-	ja	black 1)	123 300 10 33	blue	385  25
601, 602, 603 with ARF and manual transmission	-	ja	green	123 300 12 33	blue	> 300
601 602 603 with ARF and manual transmission without KAT	yes	yes	orange yellow brown	124 300 04 33 124 300 03 33 124 300 01 33	brown	> 300

1) as of February 1987 with red cap

Test and adjusting values, characteristics (continued)

Engine	Pressure control flap		Cap identification	Part no.	ARF valve identification	Vacuum adjustment mbar
	mech.	pneu.
601 with ARF and manual transmission with KAT	yes	-	orange	124 300 04 33	brown	> 300
602, 603 with ARF and manual transmission with KAT	yes	-	yellow	124 300 03 33	brown	> 300
601.913 with ARF with manual transmission and code 62/0	yes	yes	orange	140 300 05 33	brown	> 400

Engine 610.911/912 with manual transmission

National version   

The vacuum control valve has been standardized with the available special equipment code 62/0.

Production breakpoint: as of September 1990


Model	Engine	Engine end no. Manual transmission
124.120/180	601.912	150955
201.122	601.911	345882

Engine 601.912

Vacuum control valve standardized.

Production breakpoint: as of June 1993


Model	Engine	Engine end no. Manual transmission
124.120	601.912	202063

Engine 601.912

Vacuum control valve modified. Seal integrated.

Production breakpoint: as of November 1993


Model	Engine	Engine end no. Automatic transmission
124.120	601.912	021511

Engine 601.912/913

Vacuum control valve modified. Restrictor integrated in vacuum control valve.

Production breakpoint: as of June 1994


Model	Engine	Engine end no. Automatic transmission
124.120	601.912	022741
202.120	601.913	001528

Checking

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1 Pull off vacuum line, connect vacuum tester to damper (72) and check vacuum at idle speed.

Set values see table.

2 With the engine switched off, move control linkage into full throttle stop position. Check vacuum.
Set value: 0 mbar.

3 If set values are not achieved:
a) Check vacuum control valve adjustment.
b) Check vacuum lines according to vacuum diagram, check vacuum pump, renew vacuum control valve if required.

Adjusting

-------------------------------

4 Loosen mounting screws (65 c).

5 Fully open throttle so that the control lever of the injection pump contacts the full load stop.

6 Turn vacuum control valve (65) in the direction of the arrow until resistance can be felt. In this position secure mounting screws.

A sealing boot (arrow) is installed together with the vacuum control valve to prevent that dust and dirt enter the vacuum control valve.

Repair instructions
Vacuum control valves differ for manual and automatic transmissions.

0170 - Checking/adjustment of vacuum control valve for automatic transmission Engines 601, 602.91, 603.91 (note deviations for off-road vehicles)

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