BOLT 1520192 - Caterpillar

General Service Information GU08-09
Technical Supplement
August 2008 3046 and 3066 Long Blocks
Long Block Selection: General Information
The purpose of this technical supplement is to help you decide if there is a Caterpillar remanufactured long block available for a particular engine application. When making your decision, please keep the following points in mind:
Long blocks are not available for every engine application. The long blocks we do offer can, however, be used to service any applications even though the long block does not exactly match the original engine configuration. When the consist of the Reman product offering differs from the consist of a customer's engine, only the dealer and customer can decide whether or not it makes economic sense to change the parts that differ.
It's Caterpillar's policy to incorporate the latest critical engineering changes into Cat Reman products. Therefore, long blocks may be offered with some parts from a later design era as service repairs for engines from an earlier design era. An example is the 3406C crankshaft, connecting rods, and pistons which are in certain 3406B long blocks. The result is that the parts in the long blocks match each other but do not match the parts consist of new production engines, nor do they match any single parts book. When long block parts consists differ from the official parts list, Reman provides an engine plate alerting the customer to Special Instruction or Service Magazine articles for information on non-standard parts.
Make sure any future engine/long block repairs which do not use parts called for by the original parts book, or official replacements called for by parts and service sources, are carefully documented. If you choose to make any configuration or consist changes, good documentation can prevent problems the next time parts are ordered.
Machine Model Engine Model New Arrangement Number New Long Block Number Reman Long Block Number Comments
D3, D3C, D3G 3046 1072350, 1214062, 1214063, 1498742, 1843348, 6I3535, 1154840, 1247729, 1488215, 1498745, 1894294, 1745996, 1863479, 2145157 1935922, 1935923 10R7490
D4, D4C, D4G 3046 1214064, 1498743, 6I3536, 1154841, 1247730, 1488216, 1498746, 1894295, 1745997, 2145158, 1935922 1935922, 1935923 10R7490
D5, D5C, D5G 3046 1051997, 1154842, 1214065, 1214066, 1247731, 1488217, 1498744, 1498747, 1745998, 1894296, 2127775, 6I3537 1935922, 1935923 10R7490
939, 939C 3046 1104741 1935922, 1935923 10R7490
320, 320B 3066T High Ambient - 1997732 10R7491 Compatible with 320B series high ambient releases. May require pulley changed on 320A series machines.
320, 320B 3066T Std Ambient - 1997733 10R7492 Compatible with all non-high ambient 320A & B series 3066 engines. May require pulley changes to get proper fan speed.
320C 3066T Tier 2 2175472, 2724808, 2666255, 2666270, 2175473, 2228190, 2228191, 2228188, 2228187, 2228276, 2553056 2724690 10R7493
SELD0301 CATERPILLAR? ?2008 Caterpillar