Modified Aneroid COMPENSATOR (ALDA) (07.1/19)

Publication date: 1993-03-01
Reference number: 07.1/19

MODIFIED ANEROID COMPENSATOR (ALDA)

TECHNICAL SERVICE BULLETIN

Reference Number(s): 07.1/19, Date of Issue: March 1993

ENGINES 617, 601, 602, 603, MODIFIED ANEROID COMPENSATOR (ALDA)

Model(s): 1980-85 Mercedes-Benz 300 D, 300 CD, 300 TD, 300 SD

1984-89 Mercedes-Benz 190 D

1986-87 Mercedes-Benz 300 SDL

1987 Mercedes-Benz 300 D, 300 TD

1990-91 Mercedes-Benz 350 SD, 350 SDL

1990-93 Mercedes-Benz 300 D

1992-93 Mercedes-Benz 300 SD

Group: 07.1 - Engine Combustion, Diesel Injection System

Bulletin No.: MBNA 07.1/19

Date: March 1993

SERVICE INFORMATION

As of Model Year 1993 production start up, a new style aneroid compensator (ALDA) was phased into production. The function of the new ALDA remains the same and injection pumps with new style and old style ALDA are fully interchangeable with the earlier version. Reconditioned injection pumps may be retrofitted with the new style ALDA during the reconditioning process.

The changes are confined to the appearance and the pressure line connector.

NOTE: On 1985 and later models with push-on ALDA connectors, injection pumps with the new version ALDA can easily be connected by pushing the connecting piece of the pressure line onto the new style ALDA connector. The diameters of the old and new style connectors are the same (Version 1 [Fig 1 ]).

On some older prior to 1985 models with banjo style and hollow screw push on ALDA connectors, the connection of the pressure hose must be modified (Version 2 [Fig. Fig 2 ]).

Version 1

ALDA connector with banjo fitting:

Cut the pressure line as close as possible at the banjo style fitting.
Connect larger diameter end of adaptor (4), part no. 107 805 01 98, to pressure line (5). See Fig 1 .
Connect smaller diameter end of adaptor to new style ALDA (6).

Version 2

ALDA connector with banjo and hollow screw connector (3-way connection):

Cut the pressure lines off as close as possible to the banjo style fitting and the push-on fitting at the hollow screw.
Connect the Y-distributor (1), part no. 117 078 01 45, to the new style ALDA connector (6). See Fig 2 .
Connect the smaller diameter pressure line (2) to the Y-distributor.
Connect larger diameter end of adaptor (4), part no.107 805 01 98, to larger diameter pressure line (5).
Connect the smaller diameter of the adaptor (4) to the Y-distributor (1) by means of a 2-3 inch piece of plastic tube (3), part no. 014 997 87 82 (or similar).

PARTS INFORMATION

Part Name	Part Number
Adaptor	107 805 01 98
Y-distributor	117 078 01 45
Plastic tube	014 997 87 82

IN CASE OF WARRANTY

WARRANTY INFORMATION

Damage Code 0702604

Operation⁽¹⁾

⁽¹⁾	Hook up of pressure line is part of injection pump installation operation.

Fig 1: Version 1 ALDA Connection

Fig 2: Version 2 ALDA Connection