Pressure Damper And Regulator

2457/58

The position of the pressure regulator (8), part #929.110.198.01, has been switched with the pressure damper position (3a), part #930.110.602.00, and vice versa.

Elbow hose (A), part #928.110.359.01, previously connected to the pressure regulator, has been replaced by a 445 mm long hose (B), part #928.356.585.00, The securing brackets on both sides have also been changed.

New Version

Old Version

Arrows show driving direction

As of Engine #B1_F 00276 Manual Transmission

81 F 05480 Automatic Transmission

Model

New Parts*.

Omitted parts:

2 x bracket for air guide lower section 1 x bracket for pressure regulator 1 x elbow hose

Technical Bulletin

Subject:

Pressure Damper And Regulator

Model

928S

Omitted parts:

2 x bracket for air guide lower section 1 x bracket for pressure regulator 1 x elbow hose

Part Identifier

2457/58

The spare parts for the old version are no longer available. Therefore, in case of repairs, the system has to be converted to the new version.

New Parts*.

Pressure Regulator Installation - Right Pos, 1 - bracket, part #928.110.525.06 Pressure Damper Installation - Left

Pos. 2 - bracket, part # 928.110.145.11 Pos. 3 - washer, part #944.110.312.00 Pos. 4 - bolt M8x12, part #N 010.237.8 Pos. 5 - hose (445 mm long) part

#928.356.585.00 Pos. 6 - bracket for hose, part #477. 97VBB1A

Part Identifier

2457/58

Number

8504

Model

928S

Pert Identifier

2457/58

Number

8504

Page 3 of 6 June 19,1985

Technical Bullefein

Subject:

Pressure Damper And Regulator

Conversion Procedure

— Disconnect battery

— Remove complete air filter

— Remove pressure damper and regulator. Hold firmly while unscrewing fuel lines and catch escaping fuel

— Remove left and right brackets that hold air cleaner lower section and discard

— Remove left bracket for pressure regulator and discard

— Remove elbow hose (molded) on fuel tine and discard

— Install bracket for air cleaner lower section and pressure damper/regulator.

— Install pressure damper with a washer and hexagon bolt as well as the pressure regulator with a washer and nut on the new bracket.

1

Mode)

Group

Technical Bulletin

928S

2

Subject:

Pare Identifier

Number

Pressure Damper And Regulator

2457/58

Al c

-Connect fuel and vacuum lines. Install new hose (928.356.585.00) between the pressure regulator and fuel line.

To prevent the new hose from chafing, it must be secured with the bracket (477.971.881 .A) and hose clamp (113. 142.261 A) to the rear installation point of the air guide housing (arrow).

■ Reconnect battery

■Start engine, check for leaks

■Reinstall air cleaner

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