156319-0100 ZEXEL 9 423 610 138 BOSCH GASKET 9423610138 1563190100 1157491130

Solution
Caterpillar is aware of this problem and is recommending the following interim corrective action. Please follow the Special Instruction, M0110497, "Removal and Installation Procedure for DEF Heated Lines on Certain Machine Engines" for proper Disassembly and Assembly of the DEF heated lines to avoid failures. If a failure or DEF leak is noted even after following the special instructions, please use Service Magazine, M0103829, "Diesel Exhaust Fluid (DEF) Heated Lines May Be Damage on Certain Cat® Machines" for a temporary line repair. If additional help is needed, please go to the Parts Tech tab and enter a Product Health ticket in PSCRM.The new hose assemblies are listed in Table 1.
Table 1
Item Qty New Part Number Part Name
1 1 457-9011 Return Hose Assembly
2 1 457-9013 Return Hose Assembly
3 1 457-9026 Return Hose Assembly
4 1 457-9027 Return Hose Assembly
5 1 462-4206 Hose As
6 1 462-4210 Hose As
7 1 462-4211 Hose As
8 1 462-4219 Hose As
9 1 462-4220 Hose As
10 1 462-4221 Hose As
11 1 462-4223 Hose As
12 1 462-4224 Hose As
13 1 475-3231 Hose As
14 1 475-3232 Hose As
15 1 475-3233 Hose As
16 1 475-3234 Hose As
17 1 475-9989 Hose As
18 1 478-9071 Hose As
19 1 478-9072 Hose As
20 1 478-9074 Hose As
21 1 478-9075 Hose As
22 1 478-9077 Hose As
23 1 478-9078 Hose As
24 1 478-9079 Hose As
25 1 478-9081 Hose As
26 1 478-9082 Hose As
27 1 478-9083 Hose As
28 1 478-9085 Hose As
29 1 478-9086 Hose As
30 1 497-9305 Hose As
31 1 497-9306 Hose As
32 1 497-9307 Hose As
33 1 497-9308 Hose As
34 1 500-6215 Return Hose Assembly
35 1 500-6216 Return Hose Assembly
36 1 500-6217 Hose As
37 1 500-6218 Hose As
38 1 500-6219 Hose As
39 1 500-6220 Hose As
40 1 500-6221 Hose As
41 1 500-6222 Hose As
42 1 500-6223 Hose As
43 1 500-6224 Hose As
44 1 510-5191 Return Hose Assembly
45 1 510-5192 Hose As
46 1 510-5193 Hose As
47 1 510-5194 Hose As
48 1 552-3292 Hose As
49 1 552-3293 Hose As
50 1 552-3294 Hose As
51 1 552-3295 Hose As
52 1 579-9200 Hose As
53 1 579-9201 Hose As
54 1 579-9202 Hose As
55 1 579-9203 Hose As