2011/11/21 Caterpillar

New Seawater Pumps Are Used for C280 and 3600 Marine Engines {1371}

Usage:

3616 1FN

Engine: 3606 (S/N: 8RB1-UP) 3608 (S/N: 6MC1-UP; 1ZD1-UP; 8LL1-UP) 3612 TA DI (S/N: NZA1-UP) 3612 (S/N: 9RC1-UP) 3616 (S/N: 1PD1-UP; 1FN1-UP) C280-16 (S/N: NKB1-UP; TDX1-UP)
Marine Engine: C280-12 (S/N: TSJ1-UP; RDW1-UP) C280-6 (S/N: SCB1-UP; LDL1-UP) C280-8 (S/N: PKA1-UP; NDT1-UP)

Engine News SEBD9741, 21 November 2011, "New Seawater Pumps Are Used for C280 and 3600 Marine Engines". The original article has been revised to add engine serial number prefix S/N:8LL
.

Description of Change: The new pumps provide greater resistance to corrosion, which will help stabilize the integrity of the shaft.

Adaptable To: The new 376-9995 Shaft, 378-8520 Washer and 388-7069 Bolt can be installed in the former 304-4957 Auxiliary Sea Water Pump Gp and in the 10R-3765 Auxiliary Sea Water Pump Gp during a pump rebuild.

The new 388-7069 Bolt and 378-8520 Washer require a torque-turn installation procedure. The torque-turn procedure can be found in the Disassembly and Assembly, "Auxiliary Water Pump - Assemble" procedure for the engine application. Only apply the torque-turn installation procedure if using the new 388-7069 Bolt and 378-8520 Washer .

Table 1 lists the new parts for the new pumps.

Note: A new Cat pump and a Reman pump are available and can be ordered to fit on current engines.

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Table 1
Item	Qty	New Part Number	Name	Old Part Number
1	1	20R-0509	Pump GP - Water	10R-3765
2	1	388-7069	Bolt-Hex Head	8T-1812
3	1	367-6095	Pump Gp - Auxiliary	304-4957
4	1	376-9995	Shaft	208-0338
5	1	378-8520	Washer	7W-0896 (Reman) 301-9585 (Cat New)

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Table 2
Serial Number Effectivity
S/N:8RB01013-UP
S/N:1ZD00051-UP
S/N:6MC00800-UP
S/N:9RC00532-UP
S/N:NZA00113-UP
S/N:1FN00158-UP
S/N:1PD00686-UP
S/N:RDW00156-UP
S/N:TSJ00152-UP
S/N:NKB00199-UP
S/N:TDX00160-UP
S/N:LDL00117-UP
S/N:SCB00120-UP
S/N:NDT00145-UP
S/N:PKA00149-UP