1341 Force HEX NUT, 1/4 - 20

Introduction
This Special Instruction is intended to give information on what parts are used on the engine arrangements for this overhaul kit. Refer to the table below for the location of the table where your engine arrangement is listed.Note: Precious Metals Overhaul Kits 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. For assistance with technical questions, contact your local Cat dealer.Parts List for Engine Arrangements 121-9363, 108-1076, 108-1078, 108-1073, 121-9362, 121-9366, and 121-9364
Front Structure Sub-Kit Part Number: 391-8229
Table 1
Part Quantity Used Per Engine Arrangement    
Part     121-9363     108-1076     108-1078     108-1073     121-9362     121-9366     121-9364    
1W-3900 Gasket     1     1     1     1     1     1     1    
2H-3932 O-Ring Seal     N/A     N/A     N/A     N/A     N/A     N/A     N/A    
2H-3934 O-Ring Seal     1     1     1     1     1     1     1    
2M-9780 O-Ring Seal     N/A     N/A     N/A     N/A     N/A     N/A     N/A    
2P-0220 Pump Gasket     1     1     1     1     1     1     1    
2P-1692 O-Ring Seal     1     1     1     1     1     1     1    
2P-2720 Gasket     1     1     1     1     1     1     1    
5F-3106 O-Ring Seal     1     2     2     2     2     2     2    
5F-7054 O-Ring Seal     1     1     1     1     1     1     1    
6L-1883 Gasket     N/A     N/A     N/A     N/A     N/A     N/A     N/A    
6L-2609 Rubber Seal     N/A     N/A     N/A     N/A     N/A     N/A     N/A    
6N-7887 Housing Cover Gasket     1     1     1     1     1     1     1    
6V-6921 Ring Seal     1     1     1     1     1     1     1    
8N-0110 Front Plate Gasket     1     1     1     1     1     1     1    
362-8853 Crankshaft Seal Gp     1     1     1     1     1     1     1    Rear Structure Sub-Kit Part Number: 392-0183
Table 2
Part Quantity Used Per Engine Arrangement    
Part     121-9363     108-1076     108-1078     108-1073     121-9362     121-9366     121-9364    
3F-5792 O-Ring Seal     2     2     2     2     2     2     2    
4B-8407 Copper Gasket     1     1     1     1     1     1     1    
4H-7869 Gasket     1     1     1     1     1     1     1    
4N-1230 O-Ring Seal     2     2     2     2     2     2     2    
7C-4297 Crankshaft Seal Gp     N/A -See Note     1     N/A -See Note     1     1     N/A -See Note     1    
214-7566 O-Ring Seal     1     1     1     1     1     1     1    
214-7568 O-Ring Seal     4     4     4     4     4     4     4    
238-5080 O-Ring Seal     4     4     4     4     4     4     4    Note: Use 4W-0452 Crankshaft Seal Gp from the "Additional Required Parts". Refer to Table 9.Note: Use of incorrect rear crankshaft seal can cause leakage and engine failure.Central Lower Sub-Kit Part Number: 391-8604
Table 3
Part Quantity Used Per Engine Arrangement    
Part     121-9363     108-1076     108-1078     108-1073     121-9362     121-9366     121-9364    
2A-3398 Gasket     1     1     1     1     1     1     1    
2A-3541 Gasket     1     1     1     1     1     1     1    
2M-5407 Gasket     1     1     1     1     1     1     1    
2M-9780 O-Ring Seal     1     1     1     1     1     1     1    
2P-8746 Gasket     1     1     1     1     1     1     1    
2W-4561 Gasket     1     1     1     1     1     1     1    
3J-1907 O-Ring Seal     1     1     1     1     1     1     1    
3J-7354 O-Ring Seal     1