Exhaust Balance Valve Causing Regeneration Issues On Certain Tier 4i C13 Engines{1061, 5479} Caterpillar


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Exhaust Balance Valve Causing Regeneration Issues On Certain Tier 4i C13 Engines{1061, 5479} [TIBU7371]
AIR INLET AND EXHAUST SYSTEM
VALVE GP-SOLENOID
Exhaust Balance Valve Causing Regeneration Issues On Certain Tier 4i C13 Engines{1061, 5479}
1.1. Introduction
2.1. Problem
3.1. Solution
Electric Power Generation:
C13 GENSET (S/N: X3M1-UP)
Engine:
C13 (S/N: KWJ1-UP)
Excavator:
349E (S/N: FJB1-UP; DGE1-UP; SPG1-UP; TFG1-UP; RGH1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP)
Mobile Hydraulic Power Unit:
349E MHPU (S/N: JAE1-UP; S3P1-UP)
Wheel Loader:
980K (S/N: W7K1-UP; NEP1-UP; GTZ1-UP)
Wheel Tractor-Scraper:
621H (S/N: DBK1-UP; HKK1-UP)
623H (S/N: DBF1-UP)
627H (S/N: DBW1-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

Exhaust balance valves are failing causing increases in engine out soot rates. The increase in soot loaded into the DPF causes more frequent regenerations and loss of high speed regenerations.

Solution




Illustration 1g03530221

(1) Balance valve linkage

(2) Clevis




Illustration 2g03543276

View of failed exhaust balance valve

Visually inspect the balance valve on the turbocharger to verify that the clevis is attached to the valve linkage as shown in Illustration 2. If damage is discovered to the linkage and clevis, replace the turbocharger.

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