2014/04/11 Caterpillar

Engine:

C27 All

C32 All

Engine News SEBD9935, 28 March 2014, "New Fuel Transfer Pumps Are Now Used for Certain Commercial Engines". Disregard this article, engine effectivity has been updated.

Description of Change: The new fuel transfer pumps are a more robust alternative when used with low lubricity fuel and also provide increased fuel flow during cranking conditions.

Adaptable To: The new fuel transfer pumps are adaptable back to first production of the engines that are listed above.

The new 394-1397 Fuel Transfer Pump Gp is a direct replacement for the previous 286-2531 Fuel Transfer Pump Gp .

The new 394-1398 Fuel Transfer Pump Gp is a direct replacement for the previous 331-3635 Fuel Transfer Pump Gp .

The new pumps and old pumps are listed in Table 2.

Table 1

New Fuel Pump	Old Fuel Pump
394-1397 Fuel Transfer Pump Gp	286-2531 Fuel Transfer Pump Gp
394-1398 Fuel Transfer Pump Gp	331-3635 Fuel Transfer Pump Gp

This change is effective with the serial numbers listed in Table 2.

Table 2

Effective Serial Numbers

S/N:RNX01050-UP

S/N:RSD00194-UP

S/N:RPM00171-UP

S/N:PRH04287-UP

S/N:SDN00435-UP

S/N:TLD01327-UP

S/N:ZRS00438-UP

S/N:SYC05994-UP

S/N:NST00131-UP

S/N:TWM04300-UP

S/N:MJE03858-UP

S/N:SDK00247-UP

S/N:C3200113-UP

S/N:PEY00102-UP

S/N:RNY02605-UP