HEAT SINK AS 4P4488 - Caterpillar

Engine:
3508 (S/N: 95Y1-UP; 97Y1-UP)
3508B (S/N: BPX1-UP)
3512 (S/N: 49Y1-UP; 50Y1-UP; 51Y1-UP)
3512B (S/N: 2AF1-UP; S2J1-UP; S2L1-UP; S2M1-UP)
3512C (S/N: TTC1-UP; MLM1-UP; R1A1-UP; R1S1-UP; T3S1-UP; R1T1-UP; T3W1-UP)
3516 (S/N: 27Z1-UP)
3516B (S/N: CAN1-UP; S2X1-UP; S2Y1-UP)
3516C (S/N: PAG1-UP; TTJ1-UP; WFS1-UP; WFT1-UP)
Pumper:
SPF343C (S/N: RTX1-UP)
Description of Change: The new bolts used for the oil scavenge pump are longer for more thread engagement and have a higher tensile strength.Adaptable To:
Illustration 1 g03351082
(1) 3H-2750 Bolt (2) 5J-4715 Washer
Note: For more details refer to the Disassembly and Assembly, "Engine Oil Scavenge Pump - Install".The 4F-9351 Special Bolt is being replaced with bolt (1) and washer (2) . The following procedure covers the installation of the new bolt and washer.
Drain the oil from the engine and oil pan.
Remove the oil pan bolts and oil pan from the engine.
Remove 4F-9351 Special Bolts and replace with bolt (1) and washer (2). Replace one bolt at a time to ensure that the pump stays in alignment and will not have to be removed.Note: Do not torque the new bolt and washer until all of the original bolts are replaced.
Torque bolts (1) to 50 N m (37 lb ft). ReferenceRefer to Disassembly and Assembly, RENR9365, "Engine Oil Scavenge Pump - Install" for further instructions.Table 1 contains the part numbers for the new and previous parts. The new parts are effective in certain 3500 engines built after 26June 2013. The new parts are adaptable for certain 3500 engines back to first production.
Table 1
Item     Qty     New Part Number     Description     Previous Part Number    
1     4     3H-2750     Bolt     4F-9351    
2     4     5J-4715     Washer