Remanufactured Oil Pumps May Have a Shallow Suction Tube Port on Certain 3400 Engines{1304} Caterpillar


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Remanufactured Oil Pumps May Have a Shallow Suction Tube Port on Certain 3400 Engines{1304} [TIBU7384]
LUBRICATION SYSTEM
PUMP GP-ENGINE OIL
Remanufactured Oil Pumps May Have a Shallow Suction Tube Port on Certain 3400 Engines{1304}
1.1. Introduction
2.1. Problem
3.1. Solution
Engine: 3400

Introduction

The Permanent Corrective Action (PCA) is currently in process and the Interim Corrective Action (ICA) described in the solution should be used at this time.

Problem

Remanufactured oil pumps for 3400 engines may have an older 6N-1028 Oil Pump Body .

The oil pump body has a 1 mm (0.039 inch) insufficient depth on the suction tube bore for the suction tubes using a hold-down bolt.

This insufficient depth potentially causes misalignment and poor fit of the suction tubes in the housing. Refer to Illustrations 1 and 2.




Illustration 1g03543116



Illustration 2g03543118

The remanufacture oil pumps are listed in Table 1.

Table 1
Remanufactured Oil Pumps    
0R-9448 Engine Oil Pump Gp    
0R-9449 Engine Oil Pump Gp    
0R-9450 Engine Oil Pump Gp    
0R-9697 Engine Oil Pump Gp    
10R-0428 Engine Oil Pump Gp    

Solution

If the 6N-1028 Oil Pump Body is found and a hold-down bolt is used, then insure suction tube will fit the full depth in pump before installing on engine .

The pumps may be returned as parts stock warranty, or kept for an engine with a shorter suction tube depth requirement or no hold-down bolt.

The oil pump bodies have been removed from production and the parts system.

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