dh1102a00a33ux

11.2 - Roadster Soft Top (RST), Roll Bar (RB) (Manual Deployment) 33 A. - Hydraulic Test Program - Test - Soft Top Closed Model 129

Type dh · topic 77.37 · version 9928 · 1999-07-10

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 129

Hydraulic Test Program - Test - Soft Top Closed

CAUTION!

Injury hazard from pinching and crushing, in extreme cases extremities can even be severed when caught in the mechanism.

Do not allow any body parts to be in the general area of the moving components.

Preparation for Test:

1. Review entire 11.2 section, especially 32, prior to performing

any of the following tests on the soft top.

Notes for Hydraulic Test:

The following jobs are the same for all test steps:

A. Connection of test equipment to hydraulic unit (Figure 1).

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

B. Build up and release test pressure (see example).

C. Test hydraulic cylinder only at end position of piston (Observe soft top positions).

D. 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.


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, hydraulic cylinders and hydraulic manifolds must be plugged immediately using plug 129 589 00 91 11 to prevent the possible entry of dirt.

Electrical Test Program - Test - Soft Top Closed

Example: Building up and releasing test pressure.

Soft top
Ignition ON:

Activate power soft top switch (toward lower if the soft top is down, toward raise if the soft top is up) for 5 seconds. Have a second technician disconnect relay (A7/5k1, Figure 1).

Hold power soft top switch for 5 additional seconds. Read and record test pressure.

Release test pressure:

Briefly activate power soft top switch several more times.


Roll bar
Ignition ON:

Activate RB switch (toward lower if the roll bar is lowered, toward raise if it is raised) for 5 seconds. Have a second technician disconnect relay (A7/5k1, Figure 1). Hold roll bar switch for 5 additional seconds. Read and record test pressure.

Release test pressure:

Briefly activate power soft top switch several more times.

CAUTION!

Release established test pressure before beginning the next test step.

Electrical Test Program - Test - Soft Top Closed

11.2 - Roadster Soft Top (RST), Roll Bar (RB) (Manual Deployment) 33 A. - Hydraulic Test Program - Test - Soft Top Closed Model 129

P77.37-0432-06

Connection Diagram - Check valve and Pressure Gauge to Hydraulic Unit











Figure 1

1 Check valve 129 589 08 63 00

Adaptor kit 129 589 14 21 00

2 Test pressure line

3 Connector piece

4 Pressure gauge

10 Roll bar operation hydraulic line

11 Test connection

12 Soft top operation hydraulic line

13 Return line

A7/5 Hydraulic unit

A7/5k1 Relay

A7/5y1 Main valve (deleted as of VIN 1F-083891)

Electrical Test Program - Test - Soft Top Closed

11.2 - Roadster Soft Top (RST), Roll Bar (RB) (Manual Deployment) 33 A. - Hydraulic Test Program - Test - Soft Top Closed Model 129

P77.39-0272-05

Y55 Left RST Valve Block

(4 connections)












Figure 1

Y55 Left RST valve block (4 connections)

y6 Soft top "open" valve

y7 Soft top "close" valve

y8 Fabric bow "raise" valve

y9 Fabric bow "lower" valve

Electrical Test Program - Test - Soft Top Closed

11.2 - Roadster Soft Top (RST), Roll Bar (RB) (Manual Deployment) 33 A. - Hydraulic Test Program - Test - Soft Top Closed Model 129

P77.39-0273-09

Y56 Right RST Valve Block

(4 connections)

and

Y57 Roll bar Valve Block

(2 connections)






Figure 2

Y56 Left RST valve block (4 connections)

y2 Rear locks valve

y3 Center locks valve

y4 Front locks valve

y5 Soft top compartment cover valve

Y57 Roll Bar valve block (2 connections)

y10 Roll bar "Lower" valve

y11 Roll bar "raise" valve

Electrical Test Program - Test - This Page Left Blank Intentionally

Electrical Test Program - Test - This Page Left Blank Intentionally

Referenced documents