The Rear Slack Adjusters May Fail on Certain 770G, 772G, 773G, 775G, and 777G Off-Highway Trucks {4261} Caterpillar


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The Rear Slack Adjusters May Fail on Certain 770G, 772G, 773G, 775G, and 777G Off-Highway Trucks {4261} [M0124749]
BRAKING SYSTEM
SLACK ADJUSTER GP
The Rear Slack Adjusters May Fail on Certain 770G, 772G, 773G, 775G, and 777G Off-Highway Trucks {4261}
1.1. Introduction
2.1. Problem
3.1. Solution
OEM
AVS WDS (S/N: M6J127-UP)
Off-Highway Truck/Tractor
770G (S/N: KD21-128,1000-1001,20100-UP; RMA1-110,1000-UP; TWA1-UP; KDH206-503,1000-UP; ECM231,453-UP; ECX115-UP)
772G (S/N: KE31-133,1000-1010,1016-UP; RME1-104,1000-UP; LTS332-514,1000-1004,1009-UP; KEX106-502,1007-UP; LTX1-UP)
777G (S/N: T5A119-123,300-302,2000-UP; TNM756-884,1000-1174,2000-UP; RDR297-385,500-624,2000-2075,2079-UP; T4Y192-210,500-541,2010-UP)
Quarry Truck
773G (S/N: MWH346-470,2000-2003,78001-UP; JWS246-471,2013-UP; T5S126-UP; T5T104-UP)
775G (S/N: T5F103-104,106,2002-UP; RFM655-1177,2000-UP; MJS399-839,2111-UP; T5W111-115,2000-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem



Illustration 1g06618453
Cutaway view of slack adjuster
Arrow indicates oil accumulation inside the sensing piston

The rear slack adjusters may fail on machines listed above.

Solution

AVSpare is aware of this problem, but a permanent solution has not been identified yet.

------ WARNING! ------

Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.


Table 1
Required Parts 
Qty  Part Number  Part Name 
448-5566  Piston Kit 
441-5291  Slack Adjuster Gp 
441-5290  Slack Adjuster Gp 

In the event of failure, replace the failed part with the same new part number as listed in the Table 1.

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