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Technical Service Bulletin # Mercedes Benz Truck GL 450 LI27-60_P-051470 Date: 110323

Technical Service Bulletin # Mercedes Benz Truck GL 450 LI27-60_P-051470 Date: 110323

A/T - Hard 2-3 Upshift Or Slips, No 3rd Gear/DTC's Stored

Uncomfortable Upshift 2-3

Topic number LI27.60-P-051470

Version 1

Design group 27.60 gearshift, control

Date 03-23-2011

Validity All models with transmission 722.9

Reason for change

Complaint:

Hard shift operation 2-3 upshift or transmission slips (3rd gear may not be reached)

Fault codes P2502, 2505, 0894, 2711 can be entered.

Cause:

K1 piston damaged (adaptation data of shift operation 2-3 on positive/negative end stop, +20/-20 and/or +2000/-2000).

Remedy:

If the complaint can only be reproduced for the upshift from gear 2 to gear 3 or if the 3rd gear cannot be reached, there is a defect in the K1 piston.

1. Replace complete multidisk clutch Ki as per EPC.

2. Then readapt the vehicle.

Symptoms

2011 Mercedes Benz Truck GL 450 (164.871) V8-4.6L (273.923) Page 82