3116 Long Blocks Caterpillar

3116 Long Blocks

Long Block Selection: General Information

The purpose of this technical supplement is to help you decide if there is a AVSpare 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 AVSpare'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.

3116 Long Block Selection

First, use normal parts information sources (parts books, microfiche, SIS, NPR, the Reman Products Guide, etc.) to look up the Reman short block intended to service the customer's engine arrangement. Next, find that short block in the following chart and read the long block part number from the top of the same column.

Next, follow the long block candidate column down into the consist section of the chart. Check the camshaft, then cylinder head part numbers shown against the part numbers called for by normal parts information sources to service the customer's engine. Don't forget to check the NPR to determine that you are using the most current part number. Now check the other part numbers listed in the same column of the consist chart. For a long block candidate to become a "selection", all the part numbers listed under the long block part number should match the correct service part numbers for the customer's engine. If, at any point in the above process the Reman consist fails to match the part numbers called for to service the customer's engine, Reman does not have an offering that matches the customer's engine. You may select a long block, which isn't a perfect match, if you believe changing the parts, which don't match, is worth the time and money to do the work.

Miscellaneous Notes

Unlike our other long block product lines, the flywheel housing, internal oil lines, oil pan, and front housing are provided. These additional parts are included to help the dealers compete directly against the "Premium" long block offered by Navistar for their DT466 engine. These additional parts, while making a more complete package, do limit the applications which can use these long blocks without making configuration changes.

These long blocks are shipped with the front housing and gear group in place to maintain the timing between the camshaft and pistons to prevent damage to pistons and/or valves if the long block is rotated from its shipping location of "top dead center, number on firing." The valve mechanism is shipped with a cover to protect the mechanism from debris during shipment. Lifting eyes are also provided to assist the dealer in removing the block from its packaging. Valve mechanism covers and lifting eyes are to be returned with the core. If the covers and/or lifting eyes provided differ from those on the customer's core, reuse the customer's parts and return the Reman valve mechanism covers and/or lifting eyes with the engine core.