PSP FOR EXCESSIVE OIL CONSUMPTION IN CERTAIN 3406B TRUCK ENGINES - MAILED US AND CANADA, COFA, TRUCK TEPS Caterpillar

U-68
AU-44
TT-5
1318, 1214, 1215  PS0349
NOTE: This Program can only be administered after a failure
occurs. When reporting the repair, use "PS0349" as Part
Number and "7755" as Group Number.

April 30, 1990

Some 310 hp 3406B Truck Engines equipped with 7W3668 Pistons have
experienced excessive oil consumption. Engines with higher ratings
using the 1W9372 Pistons have not had this problem.

Model Identification Number
3406B (310 hp only) 7FB27302 - 73752

***** U.S. and Canadian Dealers *****
6 - 0R2413 Cylinder Kit 1 - 8T6678 Gasket Kit
1 - 8T6677 Gasket Kit 6 - 1W7524 Bearing (connecting rod)
NOTE: If 0R2413 Cylinder Kits are not available, the individual
parts listed under CofA Dealers can be used.
***** CofA Dealers *****
6 - 9Y3116 Piston  1 - 8T6677 Gasket Kit
6 - 7N7078 Ring (oil) 1 - 8T6678 Gasket Kit
6 - 2P2817 Ring (intermediate) 6 - 1W9460 Ring (top)
6 - 1W7524 Bearing (connecting rod)

Document oil consumption using the information in Warranty Bulletin
No.16 (SEBF 5116-04). Verify that at least the minimum recommended
maintenance has been performed by the customer.
If excessive oil consumption has been documented and at least the
minimum recommended maintenance has been performed, repair the engine
using the new parts.
***** Preventive Action For Excessive Oil Consumption *****
Evaluate the engine application for needed corrections.
A. Do not overcool jacket water. The jacket water
temperature must be kept above 79 deg. C (175 deg. F). Check
thermostat for leakage, install orifice or 8N9071 Check
Valve in radiator vent line, if needed.
B. Check air system for leaks. Abrasive wear can be a
factor in excessive oil consumption.
Evaluate the engine maintenance for needed corrections.
A. It is recommended that only superior quality CD
lubrication oils be used. See "EMA Lubricating Oils Data
Book" Form SEBU5939 or "Oil And Your Engines" Form
SEDB0640. C of A dealers should also refer to
"Caterpillar Heavy Duty Engine Oils for Australia",
MEHQ1178.
B. Oil change intervals are important. The oil should be
changed at the intervals shown in the Operation and
Maintenance Guide or at intervals that are consistent
with your fuel usage compared to oil sump capacity.
C. Ensure that the correct Caterpillar oil filter is used.
WARRANTY ALLOWANCES
Caterpillar's contribution for this Program will be a percentage of the
total allowable parts and labor. Calculate the cost of the listed parts
at consumer list. A maximum of 20 hours labor at dealer selling rate
will be claimable for installing the 6-0R2413 Kits. If individual parts
are installed, a maximum of 23 hours at dealer selling rate will be
allowed. Other costs, if allowable under standard warranty, can also be
claimed.
Use the information in the following example to determine Caterpillar's
contribution.
Calculate the total cost of claimable parts. Assume the cost to be
$1200.00 for the example.
Calculate the total cost of claimable labor. Assume the cost to be
$600.00 for the example.
Calculate the total cost of parts and labor. For the example the total
would be $1800. 00. Assume there are no other allowable costs.
Obtain the mileage and time in service for the engine. Round the miles
down to the next lower 10,000 mile interval. Round the time down to the
next lower full month. For the example assume 173,260 miles which
rounds down to 170,000 miles, and 21 months and 10 days which rounds
down to 21 months.
Locate the 170,000 miles and the 21 months on the appropriate vertical
lines on the attached graph. Using a straight edge connect the two
points. Find the point where the straight edge crosses the vertical
line "Caterpillar Contribution". For the example the straight edge
would cross between the 70% and 80% marks. Use 80% to calculate
Caterpillar's contribution.
For the example, Caterpillar's contribution would be 80% of $1800.00
which is $1440.00.
NOTE: If the straight edge crosses the vertical line "Caterpillar
Contribution" at any point below the 100% mark,
Caterpillar's contribution will be 100%.

Handle the parts in accordance with your Warranty Bulletin on
warranty parts handling.
Attach. (1-Graph)