Guideline For Auto. Transmission Repair/Replacement (27/32)

Publication date: 1998-05-01
Reference number: 27/32

GUIDELINE FOR AUTO. TRANSMISSION REPAIR/REPLACEMENT

TECHNICAL SERVICE BULLETIN

Reference Number(s): 27/32, Date of Issue: May 1998

ALL MODELS WITH AUTOMATIC TRANSMISSION 722.6 GUIDELINE FOR DETERMINING AUTOMATIC TRANSMISSION REPAIR/REPLACEMENT

Model(s): 1996-97 Mercedes-Benz E 420; 1996-on Mercedes-Benz SL 500, SL 600, S 420, S 500, S 600; 1997-on Mercedes-Benz E 300, E 320, S 320, C 230, C 280; 1997 Mercedes-Benz SL 320, C 36; 1998-on Mercedes-Benz E 430, SLK 230, CLK 320

Group: 27 - Automatic Transmission

Bulletin No.: S-SI-MBNA-27/32

Date: May 1998

SERVICE INFORMATION

This bulletin serves as a guideline for determining whether to repair or replace an automatic transmission (type 722.6) based on residue found in the AT fluid. A certain level of fine aluminum, or fine aluminum with brass, residue at the bottom of the fluid pan is normal and does not warrant AT replacement. Further diagnosis and repairs may be necessary in such cases. If unsure, consult your Regional Technical Coordinator.

Fine aluminum residue:

ACCEPTABLE (This does not warrant A/T replacement. Further diagnosis and possible repairs may be necessary.)

Fine aluminum and brass residue:

ACCEPTABLE (This does not warrant A/T replacement. Further diagnosis and possible repairs may be necessary.)

Fine graphite sludge:

NOT ACCEPTABLE (This indicates mechanical damage. AT replacement is justified.)

Chips and shavings (millimeter size):

NOT ACCEPTABLE (This indicates mechanical damage. AT replacement is justified.)