11.1 - Convertible soft top, roll-over bar convenience feature (CV) 33 - Test program - Hydraulic system - Testing (Part 1) Model 124

Notes on testing

The following work is the same for all test steps

 Connection schematic for test instruments to hydraulic unit (Fig. 1)

Tighten check valve 129 589 08 63 00 to 5 Nm.

 If hydraulic lines are disconnected from the valve blocks during pressure

tests, ensure that the required soft top positions (end positions of hydraulic cylinders) are set first.

All required soft top positions can be set with the soft top switch or manually (emergency actuation, ignition: OFF).
The soft top compartment cover can be locked and unlocked with the special wrench (vehicle tool kit) (see introduction into service Model 124.061, 300CE-24 Convertible).
If the lock is defective, the soft top bow can only be opened by screwing the locking pin out of the brace from the vehicle passenger compartment.

Pressure test



Do not reach into soft top linkage, upper section of windshield or soft top compartment while soft top is being locked or unlocked (injury hazard).
The hydraulic circuits associated with the soft top sequence in question and their hydraulic components can be checked separately.
Hold disconnected hydraulic lines in a vessel during pressure tests (attach transparent hose, e.g. from windshield washer).
Replace hydraulic components in the event of oil loss. During pressure tests the connections to the valve blocks may be plugged with plugs
129 589 00 91 01 only.

If hydraulic components are replaced during repair work, disconnected hydraulic lines must be plugged with plugs 129 589 00 91 07 and the connections to the valve blocks and hydraulic cylinders with plugs
129 589 00 91 11 immediately (contamination hazard).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 1.0

Check system pressure

Connect pressure gauge according to connection schematic (Fig. 1)

Soft top completely closed
Ignition: ON
Actuate roll-over bar switch (retract) and hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Press soft top switch momentarily a number of times

120-195 bar

<120 bar:
 2.0

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 2.0

Test hydraulic unit

Connect pressure gauge according to connection schematic (Fig. 1)

Screw off hydraulic line no. 10, 12 (Fig. 1), plug connections with plugs 129 589 00 91 02/03.

Soft top completely closed

Ignition: ON
Actuate roll-over bar switch (retract) and hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

175-195 bar

<175 bar:

If the pressure indicated on the pressure gauge does not decrease, replace hydraulic unit

If the pressure indicated on the pressure gauge decreases, main valve (A7/5y1,
Fig. 1) leaky

Release test pressure:
Actuate soft top switch momentarily a number of times

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 3.0

Retract roll-over bar
(Fig. 7)

Connect pressure gauge according to connection schematic (Fig. 1)

Roll-over bar extended

Ignition: ON
Actuate roll-over bar switch (retract) and hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Press soft top switch momentarily a number of times

120-195 bar

<120 bar:

 3.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 3.1

Retract roll-over bar (Fig. 7)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic line no. 101, 110 from valve block (Y57, Fig. 3), plug connection with plug
129 589 00 91 01.

Roll-over bar extended

Ignition: ON
Actuate roll-over bar switch (retract) and hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Press soft top switch momentarily a number of times

120-195 bar

<120 bar:

Valve block (Y57, Fig. 6)
Locking pawl, left or right
(Fig. 6, item 4a, 4b)

Nominal value okay:
Roll-over bar hydraulic cylinder
(Fig. 6, item 4)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 4.0

Extend roll-over bar (Fig. 8)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic line no. 101, 110 from valve block (Y57, Fig. 3), plug connection with plug
129 589 00 91 01.

Roll-over bar retracted


Ignition: ON
Actuate roll-over bar switch (extend) and hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Press soft top switch momentarily a number of times

120-195 bar

<120 bar:

Valve block (Y57, Fig. 6)

Nominal value okay:
Roll-over bar hydraulic cylinder
(Fig. 6, item 4)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 5.0

Open soft top bow lock (Fig. 9)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic line no. 44 and 47 from valve block (Y56, Fig. 4) and plug connections with plugs 129 589 00 91 01.
Disconnect plug connection on valve block (Y55y7 and Y55y8, Fig. 2).

Starting position: soft top completely closed

Locks open at front, soft top frame pushed up at front, screw locking pins off soft top bow (from vehicle passenger compartment), raise soft top bow, raise soft top compartment cover, remove coverings in soft top compartment, soft top compartment cover locked, soft top bow lowered.

Ignition: ON

Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 5.1

Nominal value okay:
Soft top bow lock (Fig. 6, item VB)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 5.1

Open soft top bow lock
(Fig. 9)

Connect pressure gauge according to connection schematic (Fig. 1)
Disconnect hydraulic line no. 31 from valve block (Y56, Fig. 4), plug connection with plug
129 589 00 91 01.
Connect hydraulic lines no. 44 and 47. Leave valves (Y55y7 and Y55y8) disconnected.

Locks open at front, soft top frame pushed up at front, soft top compartment cover locked, soft top bow lowered.

Ignition: ON

Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 5.2

Nominal value okay:
Hydraulic cylinder, lock
Soft top compartment cover (Fig. 6, item VD)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 5.2

Open soft top bow lock
(Fig. 9)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 35 and 37 from valve block (Y56, Fig. 4) and plug connections with plugs
129 589 00 91 01.
Connect hydraulic line no. 31, leave valves (Y55y7 and Y55y8) disconnected.

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow lowered.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 5.4

Nominal value okay:
 5.3

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 5.3

Open soft top bow lock
(Fig. 9)

Connect pressure gauge according to connection schematic (Fig. 1)

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

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow lowered.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top compartment cover, left (Fig. 6, item).

Nominal value okay:
Hydraulic cylinder, soft top compartment cover, right (Fig. 6, item 3).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 5.4

Open soft top bow lock
(Fig. 9)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic line no. 41 from valve block (Y55, Fig. 2), plug connection with plug
129 589 00 91 01.
Connect hydraulic lines no. 35 and 37, leave valves (Y55y7 and Y55y8) disconnected.

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow lowered.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

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

Nominal value okay:
Valve block (Y56, Fig. 6).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 6.0

Raise soft top bow
(Fig. 10)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic line no. 41 from valve block (Y55, Fig. 2), plug connection with plug
129 589 00 91 01.
Disconnect plug connection on valve (Y55y7).

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow raised.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 6.1

Nominal value okay:

 5.0

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 6.1

Raise soft top bow (Fig. 10)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 85 and 87 from valve block (Y55, Fig. 2), plug connections with plugs 129 589 00 91 01.
Leave valve (Y55y7) and hydraulic line no. 41 disconnected.

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow raised.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Valve block (Y55, Fig. 6).

Nominal value okay:

 6.2

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 6.2

Raise soft top bow (Fig. 10)

Connect pressure gauge according to connection schematic (Fig. 1)

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

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow raised.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top bow, left (Fig. 6, item 5).

Nominal value okay:
Hydraulic cylinder, soft top bow, right (Fig. 6, item 6).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 7.0

Open soft top compartment cover lock (Fig. 11)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 31 and 32 from valve block (Y56, Fig. 4), plug connections with plugs 129 589 00 91 01.
Disconnect plug connection on valves (Y55y7 and Y55y8,
Fig. 2).

Locks open at front, soft top closed, soft top frame pushed up at front, soft top bow raised, soft top compartment cover locked.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Valve block (Y56, Fig. 6)

Nominal value okay:
Soft top compartment cover lock

(Fig. 6, item VD)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 8.0

Raise soft top compartment cover
(Fig. 12)

Hydraulic faults not possible.

Check adjustment of soft top compartment cover, check soft top compartment cover hinges for easy motion.

 9.0

Lower soft top bow
(Fig. 13)

19.0

19.0

120-195 bar

19.0

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 10.0

Open soft top (Fig. 14)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 41, 61 and 63 from valve block (Y55, Fig. 2) and plug connections with plugs 129 589 00 91 01.

Soft top compartment cover raised. Put soft top down into soft top compartment.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Valve block (Y55, Fig. 6)

Nominal value okay:

 10.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 10.1

Open soft top (Fig. 14)

Connect pressure gauge according to connection schematic (Fig. 1)

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

Soft top compartment cover raised. Put soft top down into soft top compartment.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

< 120 bar:

Hydraulic cylinder, soft top drive, left
(Fig. 6, item 7)

Nominal value okay:
Hydraulic cylinder, soft top drive, right
(Fig. 6, item 8)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 11.0

Close soft top compartment cover
(Fig. 15)

Connect pressure gauge according to connection schematic (Fig. 1)

Locks open at front, soft top stored in soft top compartment, soft top compartment cover raised.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

 5.2

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 12.0

Lock soft top compartment cover lock (Fig. 16)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 31 and 47 from valve block (Y56, Fig. 4) and plug connections with plugs
129 589 00 91 01.
Disconnect plug connection from valves (Y56y3 and Y56y4,
Fig. 4, Y55y6, Fig. 2).

Soft top stored in soft top compartment, soft top compartment cover raised.

Ignition: ON
Actuate soft top switch (open), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

< 120 bar:

 5.4

Nominal value okay:
Hydraulic cylinder, soft top compartment cover lock (Fig. 5, item VD).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 13.0

Open soft top compartment cover lock (Fig. 11)

Connect pressure gauge according to connection schematic (Fig. 1)

Starting position:
Soft top completely open.
 1.0 and 2.0 performed

Soft top compartment cover lock pin under tension

Adjust lock pin

Soft top compartment cover lock defective

 14.0

Raise soft top compartment cover
(Fig. 12)

Hydraulic faults not possible.

Check soft top compartment cover adjustment, check soft top compartment cover hinges for easy motion.

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 15.0

Close soft top (Fig. 17)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 70 and 72 from valve block (Y55, Fig. 2) and plug connections with plugs
129 589 00 91 01.
Disconnect plug connection on valve (Y55y8, Fig. 2).

Locks at front open, soft top compartment cover raised, close soft top (emergency actuation), soft top frame pushed up at front, soft top bow lowered.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 15.2

Nominal value okay:
 15.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 15.1

Close soft top (Fig. 17)

Connect pressure gauge according to connection schematic (Fig. 1)

Connect hydraulic line no. 72, leave no. 70 and valve (Y55y8) disconnected.
Disconnect plug connection on valve (Y55y8, Fig. 2).

Locks open at front, soft top compartment cover raised, soft top closed, soft top frame pushed up at front, soft top bow down.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top actuation, left
(Fig. 6, item 7).

Nominal value okay:
Hydraulic cylinder, soft top actuation, right
(Fig. 6, item 8).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 15.2

Close soft top (Fig. 17)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic line no. 41 from valve block (Y55, Fig. 2), plug connection with plug
129 589 00 91 01. Connect valve (Y55y8).

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover raised, soft top bow raised.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Valve block (Y55, Fig. 6)

Nominal value okay:
Valve block (Y56, Fig. 6)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 16.0

Raise soft top bow
(Fig. 10)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 41, 85 and 87 from valve block
(Y55, Fig. 2) and plug connections with plugs 129 589 00 91 01.

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover raised, soft top bow raised.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 15.2

Nominal value okay:

 16.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 16.1

Raise soft top bow (Fig. 10)

Connect pressure gauge according to connection schematic (Fig. 1)

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

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover raised, soft top bow raised.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top bow, left
(Fig. 6, item 5)

Nominal value okay:
Hydraulic cylinder, soft top bow, right
(Fig. 6, item 6)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 17.0

Lower soft top compartment cover
(Fig. 15)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 35 and 37 from valve block (Y56, Fig. 4) and plug connections with plugs
129 589 00 91 01.
Disconnect plug connections from valves (Y55y7 and Y55y8,
Fig. 2).

Locks open at front, soft top closed, soft top frame pushed up at front, soft top bow raised, soft top compartment cover raised.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 15.2

Nominal value okay:
 17.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 17.1

Lower soft top compartment cover (Fig. 15)

Connect pressure gauge according to connection schematic (Fig. 1)

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

Locks open at front, soft top closed, soft top frame pushed up at front, soft top bow raised, soft top compartment cover lowered.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top compartment cover, left (Fig. 6, item 3)

Nominal value okay:
Hydraulic cylinder, soft top compartment cover, right (Fig. 6, item 2)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 18.0

Lock soft top compartment cover lock (Fig. 16)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 31, 35 and 37 from valve block
(Y56, Fig. 4) and plug connections with plugs 129 589 00 91 01.
Disconnect plug connection from valve (Y56y3, Fig. 4).

Locks open at front, soft top closed, soft top frame pushed up at front, soft top bow raised, soft top compartment cover raised.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 15.2

Nominal value okay:
 18.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 18.1

Lock soft top compartment cover lock (Fig. 16)

Connect pressure gauge according to connection schematic (Fig. 1)

Connect hydraulic line no. 31, leave no. 35 and 37 and valve (Y56y3) disconnected.
Disconnect plug connection from valve (Y55y9, Fig. 2).

Locks open at front, soft top closed, soft top frame pushed up at front, soft top bow raised, soft top compartment cover raised.

<120 bar:

Hydraulic cylinder, soft top compartment cover lock (Fig. 6, item VD).

Nominal value okay:

 18.2

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 18.2

Lock soft top compartment cover lock (Fig. 16)

Connect pressure gauge according to connection schematic (Fig. 1)

Connect hydraulic line no. 35, hold no. 37 in vessel, leave valve (Y56y3) disconnected.

Locks open at front, soft top closed, soft top frame pushed up at front, soft top bow raised.

Ignition: ON
Actuate soft top switch (close), hold down



Soft top compartment cover closes
Have second mechanic disconnect relay (A7/5k1,
Fig. 1) after 5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top compartment cover, left (Fig. 6, item 2).

Nominal value okay:
Hydraulic cylinder, soft top compartment cover, right (Fig. 6, item 3).

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 19.0

Lower soft top bow
(Fig. 13)

Connect pressure gauge according to connection schematic (Fig. 1)

Disconnect hydraulic lines no. 41, 94 and 96 from valve block
(Y55, Fig. 2) and plug connections with plugs 129 589 00 91 01.

Locks at front open, soft top closed, soft top frame pushed up at front, soft top compartment cover raised, soft top compartment cover locked, soft top bow raised.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

 15.2

Nominal value okay:
 19.1

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 19.1

Lower soft top bow (Fig. 13)

Connect pressure gauge according to connection schematic (Fig. 1)

Connect hydraulic line no. 94, leave no. 41 disconnected, hold no. 96 in vessel.

Locks open at front, soft top closed, soft top frame pushed up at front, soft top compartment cover locked, soft top bow lowered, insert wooden block (2 each, 80 x 60 x 20) between soft top compartment cover and soft top bow next to lock cover on left and right sides.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top bow, left (Fig. 6, item 5)

Nominal value okay:
Hydraulic cylinder, soft top bow, right (Fig. 6, item 6)

Test
step

Scope of test

Measuring instrument/
Test connection

Action/
Prerequisite

Nominal value

Possible cause/Remedy

 20.0

Lock soft top bow lock (Fig. 18)

Connect pressure gauge according to connection schematic (Fig. 1)
Disconnect plug connection from valve (Y55y9, Fig. 2).

Locks at front open, soft top closed, soft top frame pushed up at front, soft top bow raised, soft top compartment cover locked, soft top bow lock open.

Ignition: ON
Actuate soft top switch (close), hold down, have second mechanic disconnect relay (A7/5k1, Fig. 1) after
5 s, hold switch down another 5 s.

Read off test pressure

Release test pressure:
Actuate soft top switch momentarily a number of times.

120-195 bar

<120 bar:

Hydraulic cylinder, soft top bow lock (Fig. 6, item VB).

Nominal value okay:
Mechanical locking system
Lock pin incorrectly adjusted