3126 and C7 Long Blocks Caterpillar


3126 and C7 Long Blocks

Usage:

 General Service Information

GU08-10 

 
  CAT?

Technical Supplement  

 

August 2008    

3126 and C7 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 many 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 that 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.

3126 and C7 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.

 

Reman Long Block 0R9904 0R7907 10R4144 10R4145
Application 3126 Truck 3126B Truck C7 ACERT (HIGH HP) C7 ACERT (LOW HP)
Ref. Production Block Group 141-8283 129-1164, 129-1165 221-4480 221-4480
Ref. Production Piston Body As 133-5044, 115-4083  (2 piece piston) 150-4621, 115-4083 (2 piece piston) 238-2720 238-2698
Alternate Ref. Production Piston Body As. - - - -
         
Long Block Consist    
         
Short Block 0R-8936 0R-9964 10R4134 10R4139
Cylinder Head Gp 0R9612 "> 160-5136, 10R-2047, 0R9612 227-5955, 0R-8849 10R4152 10R4152
Alternate Cylinder Head Group - - 219-5847 219-5847
Camshaft Gp 0R9432, 127-8841 187-2741, 129-3191 10R4286 10R-4286
Alternate Camshaft Group - - 212-4284 212-4284
Pump & Mounting Gp 107-7817, 0R-8945 197-3161 10R4130 10R4130
Alternate Pump & Mounting Gp - - 254-4357 254-4357
Gear Gp-Front 10R-1117, 101-4540, 10R-1120 10R-1117, 101-4540, 10R-1120 205-1321 205-1321
Alternate Gear Gp-Front - - - -
Manifold Gp-Intake 117-1678 None - -
Mechanism Gp-Valve 101-3226, 10R-2126 135-2969, 10R-0422 10R4151 10R4151
Alternate Mechanism Gp- Valve - - 256-3830 256-3830
Lifting Eye Gp 7E2314, 0R-9942 197-1876 10R4285 10R4285
Alternate Lifting Eye Gp - - 228-8927 228-8927
Housing Gp-Front 116-4555 133-5055 165-4446 165-4446
Cover Gp 116-4551, 10R-0500 118-1727, 136-8888, 10R-0499 222-5920 222-5920
Alternate Cover Gp - - - -
         
Ship Loose Parts    
         
Breather Gp 2W9162 164-0210 164-0210 164-0210
Core As-Oil Cooler 187-8595, 0R-8839 187-8595, 0R-8839 0R8839 0R8839
Alternate Core As-Oil Cooler     187-8595 187-8595
Pump Gp-Engine Oil 189-8777, 0R-2733 189-8777, 0R-2733 10R4588 10R4588
Alternate Pump Gp-Engine Oil     189-8777 189-8777

 

 
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?2008 Caterpillar

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