PARTS STOCK ACTION ONLY - THE COMPRESSOR WHEEL NUT NEEDS TO BE TIGHTENED ON CERTAIN REMANUFACTURED TURBOCHARGER GROUPS AND TUR BOCHARGER CARTRIDGE ASSEMBLIES - PI7319 - MAILED US AND CANADA, CACO, COFA, BRAZIL, CFEL, COSA Caterpillar

PARTS STOCK ACTION ONLY - THE COMPRESSOR WHEEL NUT NEEDS TO BE TIGHTENED ON CERTAIN REMANUFACTURED TURBOCHARGER GROUPS AND TUR BOCHARGER CARTRIDGE ASSEMBLIES - PI7319 - MAILED US AND CANADA, CACO, COFA, BRAZIL, CFEL, COSA

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Caterpillar: Confidential Yellow

PARTS STOCK ACTION ONLY - THE COMPRESSOR WHEEL NUT NEEDS TO BE TIGHTENED ON CERTAIN REMANUFACTURED TURBOCHARGER GROUPS AND TUR BOCHARGER CARTRIDGE ASSEMBLIES - PI7319 - MAILED US AND CANADA, CACO, COFA, BRAZIL, CFEL, COSA

NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.


July 28, 1993
U-103
TT-11 A-71
TM-8 AU-58
B-39
E-81
O-67
PARTS STOCK THE COMPRESSOR WHEEL NUT NEEDS TO BE TIGHTENED
ACTION ONLY ON CERTAIN REMANUFACTURED TURBOCHARGER GROUPS
AND TURBOCHARGER CARTRIDGE ASSEMBLIES
1050  PI7319

Termination Date

October 31, 1993

Problem

The nut that retains the compressor wheel to the shaft on certain
remanufactured 0R5384, 0R5726, 0R5728, and 0R6007 Turbocharger Groups and
0R5729 Turbocharger Cartridge Assemblies needs to be tightened.

Action Required

1. Inspect all 0R5384, 0R5726, 0R5728, and 0R6007 Turbocharger Groups and
0R5729 Turbocharger Cartridge Assemblies in parts stock. If there is a
blue dot on the outside of the box, an "R" stamped in the upper left
corner of the name plate or a date code of 7/93 or later, place them
back in stock. If none of these conditions exist, proceed to the next
step.
2. Mark a straight line on the compressor nut, compressor wheel and the
threads of the shaft and wheel. Use this line as a reference to
determine if the nut or wheel rotate when checking the torque of the
nut.
3. Using a twelve-point socket with a "T" handle torque setting device,
check the torque of the nut that secures the compressor wheel to the
shaft.
NOTE: A "T" handle torque setting device must be used. DO NOT apply
side pressure to the shaft. If the shaft is bent, the compressor
wheel may contact the compressor housing during operation.
The torque specifications for these turbocharger compressor wheel
retaining nuts are:
CARTRIDGE NUMBER  TORQUE SPECIFICATION FOR NUT
0R5384  44 +/- 3 Nm (32 +/- 2 ft. lb.)
0R5726  44 +/- 3 Nm (32 +/- 2 ft. lb.)
0R5728  44 +/- 3 Nm (32 +/- 2 ft. lb.)
0R5729  44 +/- 3 Nm (32 +/- 2 ft. lb.)
0R6007  25 +/- 1 Nm (18 +/- 1 ft. lb.)
5. Check to ensure that neither the compressor nut nor the compressor wheel
moved relative to the shaft. If there was no movement, stamp a "D" in
the upper left corner of the nameplate, mark the outside of the box with
a blue dot and return the unit to parts stock.
6. If either the nut or wheel moved, DO NOT return the turbocharger
cartridge to parts stock.

Service Claim Allowances

Submit one claim for all 0R5384, 0R5726, 0R5728, and 0R6007 Turbocharger
Groups and 0R5729 Turbocharger Cartridge Assemblies not returned to parts
stock. For each turbocharger group or cartridge assembly that had the nut
torque checked, claim .3 hour labor.

Parts Disposition

***** U.S. and Canadian Dealers *****
Return all 0R5384, 0R5726, 0R5728, and 0R6007 Turbocharger Groups and 0R5729
Turbocharger Cartridge Assemblies that are not returned to parts stock along
with a copy of the claim and the Core Credit Request Packing List to:
Caterpillar Inc.
Attn: Supplier Recovery Supervisor/PI7319
Warehouse #4 Docks 7 thru 10
8201 N. University
Peoria, IL 61615
***** All Other Dealers *****
Handle the parts in accordance with your Warranty Bulletin on warranty parts
handling.