64850 Mercruiser BREAKER ASSEMBLY

Introduction
This Special Instruction is intended to provide information on the Engine Overhaul Kit Consist and detailed information on specific parts that should be used based on engine arrangements.This Engine Overhaul Kit may contain extra parts and extra quantities due to the variety of engine arrangements assigned to a given kit. Refer to the corresponding Parts Manual or Disassembly and Assembly manual in Table 1.Note: This Kit may contain upgraded parts. These upgraded part numbers may be different than what you have in the parts manual or engine, but these parts have been technically reviewed for compatibility with your application. Note: This kit contains gasket kits and includes additional parts needed to perform an engine overhaul.Note: For assistance with technical questions, contact your local Cat dealer. Reference Material
Table 1
Engine Model     Engine Arrangement     Engine Serial Number Prefix     Parts Book Media     Disassembly and Assembly Media    
3512C     283-9470     S/N:R1A     SEBP4367     UENR3312    
262-6045
283-1145 Note: For ordering reference material contact your local Cat dealer.3412C 439-8576 Top End Overhaul Kit Consist
Table 2
439-8576 Top End Overhaul Kit Consist    
Gasket Kits    
Part Number     Part Name     Qty    
355-0776     Single Cylinder Head Gasket Kit     12    
422-7380     After Cooler and Lines Gasket Kit     1    
423-4328     Oil Cooler and Lines Gasket Kit     1    
439-0457     Turbocharger Installation Kit     4    
Additional Parts Included in This Kit    
Part Number     Part Name     Qty    
0S-1591     Bolt     16    
1H-9696     O-Ring Seal     1    
1R-0755     Fuel Filter     2    
2K-8198     O-Ring Seal     4    
2N-2765     High Temperature Bolt     4    
3J-1907     O-Ring Seal     3    
3J-7354     O-Ring Seal     1    
3K-0360     O-Ring Seal     1    
4P-7680     Spacer     4    
4W-3027     Breather As     3    
5P-3875     Bolt     44    
5P-3961     Bolt     4    
6V-1943     High Temperature Bolt     8    
6V-4589     O-Ring Seal     1    
6V-5048     O-Ring Seal     1    
7N-4782     Lifter Guide Spring     24    
8T-5452     O-Ring Seal     1    
9S-8752     Full Nut     16    
9Y-8389     Gasket     1    
120-4339     Spring Washer     12    
127-8269     Exhaust Seal     8    
154-6389     Button     36    
214-7566     O-Ring Seal     1    
238-5080     O-Ring Seal     2    
238-5081     O-Ring Seal     9    
245-3512     Gasket     2    
248-5513     Temperature Regulator     4    
275-2604     Engine Oil Filter     3    Note: For assistance or technical questions contact your local Cat dealer.Note: Refer to Illustration 1 for location of gasket kits.3512 Engine Gasket Kit Locations
Illustration 1 g03430649
(1) Turbocharger Installation ( 439-0457 Gasket Kit ) (2) Oil Cooler and Lines ( 423-4328 Gasket Kit ) (3) Single Cylinder Head ( 355-0776 Gasket Kit ) (4) Aftercooler and Lines ( 422-7380 Gasket Kit )Gasket Kit Consists
Single Cylinder Head (355-0776 Gasket Kit)
Table 3
355-0776 Gasket Kit (Single Cylinder Head)    
Part Number     Part Name     Qty    
4S-5898     O-Ring Seal     1    
5P-0840     O-Ring Seal &