dh1101a00a33ux

11.1 - Cabriolet Soft Top (CST), Roll Bar (RB) (Manual Operation) 33 A. - Hydraulic Test Program - Test Model 124

Type dh · topic 77.37 · version 9629 · 1996-07-17

Applies to:

Where it sits

Function group 3 Body › 77 Sliding roof, soft top, top attachments › 77.37 Vario roof, soft top - hydraulic system — Series 124 (models 066)

Hydraulic Test Program - Test

11.1 - Cabriolet Soft Top (CST), Roll Bar (RB) (Manual Operation)               
	33 A. - Hydraulic Test Program - Test                                           
	Model 124

Connection diagram -

Pressure gauge and check valve to

hydraulic unit










Figure 1

A7/5 CST/RB hydraulic unit

A7/5k1 Relay

A7/5y1 Main valve

1 Check valve

2 Pressure test line

3 Coupling piece

4 Pressure gauge

10 Roll bar hydraulic line

11 Test connection

12 Soft top hydraulic line

13 Return line

Hydraulic Test Program - Test

Test Notes

The following jobs are the same for all test steps:

Connection of test equipment to hydraulic unit (Figure 1).
Torque check valve 129 589 08 63 00 to 5 Nm.

If hydraulic lines need to be disconnected from the valve blocks during pressure tests, the appropriate soft top position (end position of the hydraulic cylinder) must first be ensured.

All the necessary soft top positions can be achieved by using the soft top

switch or by moving the soft top by hand (manual operation, Ignition: OFF).

The soft top compartment cover can be locked or unlocked by using the

emergency tool in the vehicle tool kit (refer to Introduction Manual, Model

Year 1993 Models 124, 129, 140, 201.

In the event of a lock failure, the fabric bow can only be opened by

unscrewing the lock pin from inside the vehicle.

Pressure test

WARNING!

Keep hands clear of soft top mechanism, windshield frame and soft top compartment cover.

The hydraulic circuits and components responsible for a specific soft top

movement can be tested separately.

Disconnected hydraulic lines should be held in a container (connect a

transparent hose such as windshield washer hose).

Hydraulic components that leak should be replaced. During pressure tests,

the valve block connections must be plugged with plug 129 589 00 91 01.

If hydraulic components need to be replaced, the disconnected hydraulic

lines must be plugged with plug 129 589 00 91 07, while the connections of

valve blocks and hydraulic cylinders must be plugged immediately using

plug 129 589 00 91 11 to prevent the possible entry of dirt.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

1.0

Check system pressure

Connect pressure gauge according to connection diagram (Figure 1).

Soft top completely closed
Ignition: ON
Press and hold RB switch to retract roll bar. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.










120 - 195 bar

<120 bar:
2.0.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

2.0

Test hydraulic unit

Connect pressure gauge according to connection diagram (Figure 1).

Disconnect hydraulic line no. 10, 12 (Figure 1) close off using plug
129 589 00 91 02/03.

Soft top completely closed

Ignition: ON
Press and hold RB switch to retract roll bar. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:











175 - 195 bar

<175 bar:

if the pressure displayed on the pressure gauge does not drop, replace hydraulic unit.

If the pressure displayed on the pressure gauge does drop, the Main valve (A7/5y1, Figure 1) is leaking.

Release test pressure:
Press soft top switch briefly several times.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

3.0

Retract roll bar
(Figure 7)

Connect pressure gauge according to connection diagram (Figure 1).

Roll bar extended.

Ignition: ON
Press and hold RB switch to retract roll bar. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.










120 - 195 bar

<120 bar:

3.1.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

3.1

Retract roll bar
(Figure 7)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

No. 101, 110 from valve

block (Y57, Figure 3).

Close connection with

plug 129 589 00 91 01.

Roll bar extended.

Ignition: ON
Press and hold RB switch to retract roll bar. Have an assistant unplug

relay (A7/5k1) (Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.











120 - 195 bar




<120 bar:

Valve block (Y57, Figure 6)
Left or right locking pawl (Figure 6, Position 4a, 4b).

If nominal value is attained:

Roll bar hydraulic cylinder
(Figure 6, Position 4).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

4.0

Extend roll bar
(Figure 8)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

No. 101, 110 from valve

block (Y57, Figure 3).

Close connection with

plug 129 589 00 91 01.

Roll bar retracted.


Ignition: ON
Press and hold RB switch to extend roll bar. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.












120 - 195 bar



<120 bar:

Valve block (Y57, Figure 6).

If nominal value is attained:

Roll bar hydraulic cylinder
(Figure 6, Position 4).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

5.0

Opening fabric bow lock (Figure 9)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 44, 47 from Valve

block (Y56, Figure 4)

close connection using

plug 129 589 00 91 01
Pull plug off valve block

(Y55y7 and Y55y8,

Figure 2).

Starting position: Soft top completely closed.

Front latches unlocked, soft top frame pushed up in front. Unscrew fabric bow lock pins from inside vehicle, set fabric bow upright, open soft top compartment cover. Remove trim panels in soft top compartment, soft top compartment cover latched, fabric bow lowered.

Ignition: ON

Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.






















120 - 195 bar

<120 bar:

5.1.

If nominal value is attained:

Fabric bow lock (Figure 6,

Position VB).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

5.1

Opening fabric bow lock

(Figure 9)

Connect pressure gauge

according to connection

diagram (Figure 1).
Disconnect hydraulic line

no. 31 from valve block

(Y56, Figure 4) close

connection using plug
129 589 00 91 01.
Connect hydraulic lines

no. 44, 47 leave valves

(Y55y7 and Y55y8)

disconnected.

Front latches unlocked, soft

top frame pushed up in front,

soft top compartment cover

latched, fabric bow lowered.

Ignition: ON

Press and hold power soft top

switch to open soft top. Have

an assistant unplug

relay (A7/5k1, Figure 1) after

5 sec. Keep switch

depressed an additional 5

sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly

several times.














120 - 195 bar

<120 bar:

5.2.

If nominal value is attained:


Soft top compartment cover lock

hydraulic cylinder (Figure 6,

Position VD).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

5.2

Opening fabric bow lock

(Figure 9)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 35, 37 from valve

block (Y56, Figure 4),

close connection using

plug 129 589 00 91 01.
Connect hydraulic line

no. 31, leave valves

(Y55y7 and Y55y8)

disconnected.

Front locks open, soft top

closed, front of soft top frame

pushed up, soft top

compartment cover locked,

fabric bow lowered.

Ignition: ON
Press and hold power soft top

switch to open soft top. Have

an assistant unplug

relay (A7/5k1, Figure 1) after

5 sec. Keep switch d

epressed an additional 5

sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly

several times.















120 - 195 bar

<120 bar:

5.4.

If nominal value is attained:
5.3.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

5.3

Opening fabric bow lock

(Figure 9)

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line no. 35, leave valves (Y55y7 and Y55y8) disconnected.

Front locks open, soft top closed, front of soft top frame pushed up, soft top compartment cover locked, fabric bow lowered.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Left soft top compartment cover

hydraulic cylinder (Figure 6,

Position 2).

If nominal value is attained:

Right soft top compartment

cover hydraulic cylinder (Figure

6, Position 3).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

5.4

Opening fabric bow lock

(Figure 9)

Connect pressure gauge according to connection diagram (Figure 1).

Disconnect hydraulic line no. 41 from valve block (Y55, Figure 2), close connection using plug
129 589 00 91 01.

Connect hydraulic line no. 35, 37, leave valves (Y55y7 and Y55y8) disconnected.

Front locks open, soft top closed, front of soft top frame pushed up, soft top compartment cover locked, fabric bow lowered.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.















120 - 195 bar

<120 bar:
Valve block (Y55, Figure 6).

If nominal value is attained:
Valve block (Y56, Figure 6).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

6.0

Raising fabric bow

(Figure 10)

Connect pressure gauge according to connection diagram (Figure 1).

Disconnect hydraulic line no. 41 from valve block (Y55, Figure 2) close connection using plug
129 589 00 91 01.
Disconnect plug from valve (Y55y7).

Front locks open, soft top closed, front of soft top frame pushed up, soft top compartment cover locked, fabric bow raised.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.














120 - 195 bar

<120 bar:

6.1.

If nominal value is attained:

5.0.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

6.1

Raising fabric bow

(Figure 10)

Connect pressure gauge according to connection diagram (Figure 1).

Disconnect hydraulic line

no. 85, 87 from valve

block (Y55, Figure 2),

close connection using

plug 129 589 00 91 01.

Leave valve (Y55y7) and

hydraulic line no. 41

disconnected.

Front locks open, soft top closed, front of soft top frame pushed up, soft top compartment cover locked, fabric bow raised.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Valve block (Y55, Figure 6).

If nominal value is attained:

6.2.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

6.2

Raising fabric bow (Figure 10)

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line no. 85, leave no. 41 and valve (Y55y7) disconnected.

Front locks open, soft top closed, front of soft top frame pushed up, soft top compartment cover locked, fabric bow raised.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Left fabric bow hydraulic cylinder
(Figure 6, Position 5).

If nominal value is attained:

Right fabric bow hydraulic cylinder
(Figure 6, Position 6).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

7.0

Unlocking soft top compartment cover lock (Figure 11)

Connect pressure gauge according to connection diagram (Figure 1).

Disconnect hydraulic line

no. 31, 32 from valve

block (Y56, Figure 4),

close connection using

plug 129 589 00 91 01.

Disconnect connector

from valve (Y55y7 and

Y55y8, Figure 2).

Front locks open, soft top closed, front of soft top frame pushed up, fabric bow raised, soft top compartment cover locked.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.















120 - 195 bar




<120 bar:

Valve block (Y56, Figure 6).

If nominal value is attained:

Soft top compartment cover lock (Figure 6, Position VD).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

8.0

Raising soft top compartment cover

(Figure 12)









Hydraulic fault not possible.

Check adjustment of soft top compartment cover, check for smooth operation of cover hinges.

9.0

Lowering fabric bow

(Figure 13)

19.0

19.0

120 - 195 bar

19.0.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

10.0

Opening soft top

(Figure 14)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 41, 61, 63 from valve

block (Y55, Figure 2),

close connection using

plug 129 589 00 91 01.

Soft top compartment cover raised. Lower soft top into compartment.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Valve block (Y55, Figure 6).

If nominal value is attained:

10.1.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

10.1

Opening soft top (Figure 14)

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line no. 63, leave no. 41, 61 disconnected.

Soft top compartment cover raised, lower soft top into compartment.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.













120 - 195 bar

< 120 bar:

Left soft top drive hydraulic cylinder (Figure 6, Position 7).

If nominal value is attained:
Right soft top drive hydraulic cylinder (Figure 6, Position 8).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

11.0

Closing soft top compartment cover

(Figure 15)

Connect pressure gauge according to connection diagram (Figure 1)

Front locks open, soft top lowered into soft top compartment, soft top compartment cover raised.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.














120 - 195 bar

5.2

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

12.0

Locking soft top compartment cover lock (Figure 16)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 31, 47 from valve

block (Y56, Figure 4),

close connection using

plug 129 589 00 91 01.
Disconnect connectors

from valves (Y56y3 and

Y56y4, Figure 4, Y55y6,

Figure 2).

Soft top lowered into soft top compartment, soft top compartment cover raised.

Ignition: ON
Press and hold power soft top switch to open soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.













120 - 195 bar

< 120 bar:

5.4

If nominal value is attained:

Soft top compartment cover lock

hydraulic cylinder (Figure 5,

Position VD).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

13.0

Unlocking soft top compartment cover lock (Figure 11)

Connect pressure gauge according to connection diagram (Figure 1).

Starting position:

Soft top opened completely.
1.0 and 2.0 carried out.

Soft top compartment cover lock pin binding.

Adjust lock pin.


Soft top compartment cover lock defective.

14.0

Raising soft top compartment cover

(Figure 12)

Hydraulic fault not possible.

Check adjustment of soft top compartment cover, check for smooth operation of cover hinges.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

15.0

Closing soft top (Figure 17)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 70, 72 from valve

block (Y55, Figure 2),

close connection using

plug 129 589 00 91 01.
Disconnect connector

from valve (Y55y8,

Figure 2).

Front locks open,

soft top compartment cover raised.

Close soft top manually, front of soft top frame pushed up, fabric bow lowered.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.
















120 - 195 bar

<120 bar:

15.2.

If nominal value is attained:
15.1.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

15.1

Closing soft top (Figure 17)

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line no. 72, leave no. 70 and valve (Y55y8) disconnected.
Disconnect connector from valve (Y55y8, Figure 2).

Front locks open, soft top compartment cover raised, soft top closed, soft top frame pushed up in front, fabric bow lowered.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Left soft top hydraulic actuating cylinder (Figure 6, Position 7).

If nominal value is attained:

Right soft top hydraulic actuating cylinder (Figure 6, Position 8).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

15.2

Closing soft top (Figure 17)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 41 from valve block

(Y55, Figure 2) close

connection using plug

129 589 00 91 01.

connect valve (Y55y8).

Front locks open, soft top closed, soft top frame pushed up in front, soft top compartment cover raised, fabric bow raised.


Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Valve block (Y55, Figure 6).

If nominal value is attained:

Valve block (Y56, Figure 6).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

16.0

Raising fabric bow

(Figure 10)

Connect pressure gauge

according to connection

diagram (Figure 1)

Disconnect hydraulic line

no. 41, 85, 87 from valve

block (Y55, Figure 2),

close connection using

plug 129 589 00 91 01.

Front locks open, soft top closed, soft top frame pushed up in front, soft top compartment cover raised, fabric bow raised.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

15.2.

If nominal value is attained:

16.1.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

16.1

Raising fabric bow

(Figure 10).

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line no. 85, leave no. 87 disconnected.

Soft top open at front, soft top closed, soft top frame pushed up in front, soft top compartment cover raised, fabric bow raised.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Left fabric bow hydraulic cylinder (Figure 6, Position 5).

If nominal value is attained:

Right fabric bow hydraulic cylinder (Figure 6, Position 6).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

17.0

Lowering soft top compartment cover

(Figure 15)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 35, 37 from valve

block (Y56, Figure 4),

close connection using

plug 129 589 00 91 01.

Disconnect connector

from valve (Y55y7 and

Y55y8, Figure 2) .

Front locks open, soft top closed, soft top frame pushed up in front, fabric bow raised, soft top compartment cover raised.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

15.2.

If nominal value is attained:
17.1.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

17.1

Lowering soft top

compartment cover

(Figure 15)

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line no. 35, hold no. 37 in a container and leave valve (Y55y7 and Y55y8) disconnected.

Front locks open, soft top closed, soft top frame pushed up in front, fabric bow raised, soft top compartment cover lowered.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.















120 - 195 bar

<120 bar:

Left soft top compartment cover

hydraulic cylinder (Figure 6,

Position 3).

If nominal value is attained:

Right soft top compartment

cover hydraulic cylinder

(Figure 6, Position 2).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

18.0

Locking soft top compartment cover lock (Figure 16)

Connect pressure gauge

according to connection

diagram (Figure 1).

Disconnect hydraulic line

no. 31, 35, 37 from valve

block (Y56, Figure 4),

close connection using

plug 129 589 00 91 01.
Disconnect connector

from valve (Y56y3,

Figure 4).

Front locks open, soft top

closed, soft top frame pushed

up in front, fabric bow raised,

soft top compartment cover

raised.

Ignition: ON
Press and hold power soft top

switch to close soft top. Have

an assistant unplug

relay (A7/5k1, Figure 1) after

5 sec. Keep switch

depressed an additional 5

sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly

several times.















120 - 195 bar

<120 bar:

15.2.

If nominal value is attained:
18.1.

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

18.1

Locking soft top compartment

cover lock (Figure 16)

Connect pressure gauge

according to connection

diagram (Figure 1).

Connect hydraulic line

no. 31,
Leave no. 35, 37 and

valve (Y56y3)

disconnected.

Disconnect connector

from valve

(Y55y9, Figure 2).

Front locks open, soft top

closed, soft top frame pushed

up in front, fabric bow raised,

soft top compartment cover

raised.

<120 bar:

Soft top compartment cover lock

hydraulic cylinder (Figure 6,

Position VD).

If nominal value is attained:

18.2

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

18.2

Locking soft top compartment

cover lock (Figure 16)

Connect pressure gauge

according to connection

diagram (Figure 1).

Connect hydraulic line

no. 35, hold no. 37 in a

container and leave

valve (Y56y3)

disconnected.

Front locks open, soft top

closed, soft top frame pushed

up in front, fabric bow raised.

Ignition: ON
Press and hold power soft top

switch to close soft top.

Soft top compartment cover will close.

Have an assistant unplug

relay (A7/5k1, Figure 1) after

5 sec. Keep switch

depressed an additional 5

sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly

several times.
















120 - 195 bar

<120 bar:

Left soft top compartment cover

hydraulic cylinder (Figure 6,

Position 2).

If nominal value is attained:

Right soft top compartment

cover hydraulic cylinder

(Figure 6, Position 3).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

19.0

Lowering fabric bow

(Figure 13)

Connect pressure gauge according to connection diagram (Figure 1).

Disconnect hydraulic line no. 41, 94, 96 from valve block (Y55, Figure 2), close connection using

plug 129 589 00 91 01.

Front locks open, soft top closed, soft top frame pushed up in front, soft top compartment cover raised, soft top compartment cover locked, fabric bow raised.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug

relay (A7/5k1, Figure 1)

after 5 sec. Keep switch

depressed an additional

5 sec.

Read test pressure:

Release test pressure:

Press soft top switch briefly several times.
















120 - 195 bar

<120 bar:

15.2

If nominal value is attained:
19.1

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

19.1

Lowering fabric bow

(Figure 13)

Connect pressure gauge according to connection diagram (Figure 1).

Connect hydraulic line

no. 94, leave no. 41

disconnected, hold no.

96 in a container.

Front locks open, soft top

closed, soft top frame pushed

up in front, soft top

compartment cover locked,

fabric bow lowered. Place

wooden blocks (2 pieces,

80mm x 60mm x 20mm)

between the soft top

compartment cover and the

fabric bow next to the latches

on the left and right.

Ignition: ON
Press and hold power soft top

switch to close soft top. Have

an assistant unplug relay

(A7/5k1, Figure 1) after

5 sec. Keep switch depressed an additional

5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly

several times.





















120 - 195 bar

<120 bar:

Left fabric bow hydraulic cylinder (Figure 6, Position 5).

If nominal value is attained:

Right fabric bow hydraulic cylinder (Figure 6, Position 6).

Hydraulic Test Program - Test

Test step

Scope of test

Test connection

Test condition

Nominal value

Possible cause/Remedy

20.0

Locking fabric bow lock (Figure 18)

Connect pressure gauge according to connection diagram (Figure 1).
Disconnect connector from valve (Y55y9, Figure 2).

Front locks open, soft top closed, soft top frame pushed up in front, fabric bow raised, soft top compartment cover locked, fabric bow lock opened.

Ignition: ON
Press and hold power soft top switch to close soft top. Have an assistant unplug relay (A7/5k1, Figure 1) after 5 sec. Keep switch depressed an additional 5 sec.

Read test pressure:

Release test pressure:
Press soft top switch briefly several times.
















120 - 195 bar

<120 bar:

Hydraulic cylinder fabric bow lock (Figure 6, Position VB).

If nominal value is attained:

Lock mechanism,
Lock pin improperly adjusted.

Referenced documents