Usage:
CONFIDENTIAL TIBU4219-00
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TECHNICAL INFORMATION BULLETIN |
April 14, 2004 |
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On-highway Engines
Industrial Engines
Generator Set Engines
Marine Engines
Machine Engines |
3406B (4MG, 7FB, 5KJ, 3ZJ, 7XC) 3406C (5KJ, 3ZJ,) 3406 (90U) 3406B (6TB) 3406C (3ER, 6TB) 3408C (9XM) 3412 (BCS) 3406B (2WB, 2RJ, 4RG, 4JK, 4PM, 9PL) 3406C (2WB, 2RJ, 4RG, 4JK, 1LS, 4ZR, 1DZ, 406) 3412 (2WJ, 9JR, BLG) 3412C (BAK) 3406B (4TB) 3406C (4TB, 1SS, 2AM, 4BM) 3306 (08Z) 3406 (11N, 70V, 41Z) 3406C (D2E) 3412C (2SZ, 5LJ) |
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Component Code: 1251 |
SUBJECT: Valve Bonnets with Insufficient Hardness
PROBLEM:
Some 108-2102 valve bonnets may crack due to a lack of sufficient hardness. The lack of hardness is caused by an insufficient heat treatment to the valve bonnets. Parts received through the parts system between February 17, 2004 and March 15, 2004 are suspect. The defective bonnets are matte silver in color. Bonnets with sufficient hardness are dull grey/black in color. The following dealers received parts from the parts system during the above time period.
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B040 |
B420 |
D391 |
E103 |
H373 |
N020 |
T130 |
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B041 |
B430 |
D420 |
E134 |
H374 |
N022 |
T213 |
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B044 |
B431 |
D423 |
E147 |
H377 |
N025 |
U067 |
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B090 |
B433 |
D434 |
E250 |
H380 |
N027 |
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B132 |
D073 |
D436 |
E274 |
J040 |
N031 |
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B157 |
D080 |
D438 |
E350 |
J201 |
N050 |
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B160 |
D088 |
D440 |
E450 |
J210 |
N070 |
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B162 |
D090 |
D441 |
E451 |
J217 |
N120 |
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B166 |
D092 |
D445 |
E452 |
J261 |
N121 |
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B167 |
D093 |
D480 |
E453 |
J281 |
N124 |
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B190 |
D100 |
D491 |
E480 |
J287 |
N170 |
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B250 |
D113 |
D500 |
E500 |
J370 |
N179 |
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B253 |
D115 |
D531 |
E513 |
J403 |
P380 |
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B271 |
D118 |
D580 |
E515 |
M410 |
Q301 |
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B274 |
D126 |
E070 |
E516 |
M450 |
Q302 |
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B290 |
D180 |
E074 |
H270 |
M610 |
R050 |
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B291 |
D242 |
E080 |
H273 |
M611 |
R061 |
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B294 |
D310 |
E081 |
H334 |
M614 |
R080 |
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B296 |
D312 |
E092 |
H349 |
M633 |
R123 |
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B350 |
D390 |
E093 |
H36A |
M681 |
R460 |
SOLUTION:
The suspect parts should not be used in order to make a repair. Any repair made with the suspect parts received during the above listed time period should be inspected. Bonnets that are the matte silver color may crack, and thus should be replaced. Return all suspect bonnets to the following address.
Caterpillar, Inc.
Service Claims Room
8201 N. University Street
Peoria, Il 61615
Attn: Roger Hudson / Bonnets
This TIB should be shared with all TEPS dealers.
COPYRIGHT 2004 CATERPILLAR
ALL RIGHTS RESERVED