2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI28-10_P-0519352 Date: 120522
Drivetrain - Oil Leak At Seam Between A/T And Transfer Case
Oil leakage at transfer case of automatic transmission 722.96x
Topic number LI28.10-P-051935
2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 59
Version 2
Design group 28.10 Complete transfer case
Date 05-22-2012
Validity Veh. with transmission model 722.96x up to transmission sequence no.: 2.741.558
Reason for change Revision of damage code & OK transmission sequence
number added.
Complaint:
Oil leakage at the seam between the automatic transmission and the transfer case.
Leakage can occur around the entire seam.
Attachments
Cause:
Leakage at automatic transmission/transfer case flange.
Remedy:
Sealing with black sealant (Loctite 5970) only if there is definite droplet formation in the vicinity of the seam or in the vicinity of the propeller shaft
to the front axle transmission.
If the problem is a "sweating" leak, sealing must not be carried out, as this is a normal phenomenon inherent in the design of oil-filled systems.
In accordance with the WIS instructions in the attachment, disassemble the transfer case housing and seal it using black sealant A003 989 98 20
(Loctite 5970).
Symptoms
Parts
Work units
2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 60
WIS-References
Attachments
Sample picture showing sweating
2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 61
Sample picture showing leakage
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