The Pressure Setting on the Hoist Raise Valve Group May Be Low on Certain Off-Highway Trucks {5051, 5069, 5117} Caterpillar

Off-Highway Truck/Tractor

770G (S/N: KDH1-UP)

772G (S/N: RME1-UP; KEX1-1,387-UP; LTX1-UP)

777G (S/N: T5A1-123,300-UP; TNM1-884,1000-UP; RDR1-385,522-UP; T4Y1-210,520-UP)

Quarry Truck

773G (S/N: MWH1-UP; JWS427-UP; T5S126-UP; T5T1-UP)

775G (S/N: T5F103-UP; RFM1-UP; MJS651-UP; T5W1-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

The pressure setting on the hoist raise 416-8724 Relief Valve Gp may be low on the machines listed above.

Solution

Caterpillar is aware of this problem, but a permanent solution is not defined yet.

Illustration 1	g06312563
(1) 416-8724 Relief Valve Gp

Adjust raise relief valve group (1) setting to the proper setting. If setting is lost second time, please submit a Dealer Solution Network (DSN) ticket, quoting CPI issue number 406116.

Refer to Table 1 for the media reference information of the machines.