Information that is required to understanding and the determining of the root cause of a piston pin joint failure Caterpillar


Information that is required to understanding and the determining of the root cause of a piston pin joint failure

Usage:

Information that is required to understanding and the determining of the root cause of a piston pin joint failure

CONFIDENTIAL TIBU3980

TECHNICAL INFORMATION BULLETIN

October 15, 2003

Caterpillar Products

 

 

Engines

3500 Family Generator Sets and

Power Modules

Machine Engines All 3500 Series

3500 Family All

 

Component Code 1214

SUBJECT:

Information that is Required to Understand and to Determine the Root Cause of a Piston Pin Joint Failure.

PROBLEM:

In the past not enough information has been collected in order to understand and determine the root cause of a piston pin joint failure.

SOLUTION:

The following is a list of information that should be collected for performing a piston pin joint failure analysis. This data is necessary so that the entire operating conditions are understood and considered. In general, the more information surrounding the failure that is provided, the more accurate a root cause determination will be.

General Information

Engine Type (3516B, 3512B HD)

 

Engine Model (E274, E448)

 

Engine Serial Number

 

Engine "Vintage" (New, Reman)

 

Application (Gen Set, 793C)

 

Machine Serial Number (If applicable)

 

Rating (Test spec)

 

Engine Hours

 

Component Hours (If different from engine hours)

 

Oil Type (Name and grade)

 

Oil Filter (Manufacturer and model)

 

Equipped with prelube? (Is the prelube being used)

 

Servicing Dealer

 

Location (Customer Name, Mine Name)

 

For Dealer Rebuilt Engines

What facility rebuilt the engine?

 

When was engine rebuilt?

 

What was break in cycle of rebuilt engine?

 

Part Numbers & Date Codes (New,Reman, or Dealer Reused)

Cylinder Pack

 

Crown As.

 

Skirt

 

Pin

 

Top Ring

 

Intermediate Ring

 

Oil Ring

 

Liner

 

Cooling Jet

 

Pin Retaining Clip

 

Maintenance History

S?O?S Data for current engine

 

Oil Change History / Maintenance Period

 

Location oil changes were performed (in the field or at the shop)

 

Valve Lash adjustment history

 

Air system pressure check history

 

Engine Repair Log for current engine

 

ECM/VIMS downloads

 

Operating/Environmental Conditions

Climate (Temperature)

 

Altitude (Within 1000 feet)

 

Type of mine (Pit, rolling terrain, material mined) - if machine

 

Type of loading (Uphill haul, pushing overburden)

 

General description of operating conditions (hours run per day, load factor)

 

Supplemental hardware (JW heaters, ether system, oil renewal)

 

Cycling (Number of engine starts per week)

 

Conditions Surrounding Failure

(Provide a general account of the type of operation prior to failure.)

How was the problem noticed?

 

What happened?

 

Was blowby measured recently? (What were the results?)

 

Summary of recent alarms and shutdowns, and the response to each alarm or shutdown.

 

When removing parts from an engine

Keep all parts from a given cylinder together.

 

Parts must not be cleaned or over handled.

 

Label cylinder number on crown, skirt, pin and liner.

 

Indicate which direction faces front with respect to the engine on crown, skirt, pin and liner.

 

If possible, provide 2-3 additional (unfailed) cylinder packs from the same engine (label in same manner).

 

Cooling jets should also be sent with cylinder pack (labeled).

 

COPYRIGHT 2003 CATERPILLAR
ALL RIGHTS RESERVED

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