GUIDE A 4F7246 - Caterpillar

1100, 3100, 3200 Series Direct Injection Engines
The mounting holes in the cylinder head at location (A), used for a lifting eye bracket (or other brackets) may be a different size than the original head; therefore, rework and extra parts may be needed. Cylinder heads on earlier engines had bracket mounting holes with 3/8"-16-2B threads. Later cylinder heads had bracket mounting holes with 1/2"-13-2B threads. 1 If a cylinder head of the earlier type is replacing a later cylinder head, the replacement cylinder head will have 3/8"-16-2B threads in the mounting holes. Install the bracket with S1594 Bolts and 5M2894 Washers.2 If a cylinder head of the later type is replacing an earlier cylinder head, the holes in the lifting eye bracket (or other brackets) must be enlarged to 13.0 mm Ø (0.53" Ø). Use 6H1717 Bolts and 5P8245 Washers to install the lifting eye bracket on the replacement cylinder head.1100, 3100, 3208 Engines
1 If the cylinder head is to be used on the left side of the engine, install a 9L7657 Cup Plug at location (A). If the cylinder head is to be used on the right side of the engine, install a 9L7657 Cup Plug at location (B). On all cylinder heads, install a 7H3171 Hex Countersunk Head Plug at location (C). Install 5M6213 Plugs at locations (D) as necessary. Due to the different size holes in earlier and later cylinder heads, install either a 2B858 or a 5M6214 Plug in the opening at (E).
Some earlier engines had cylinder heads with different (shorter) length head bolts in locations (F). These cylinder heads can be identified by the casting part number at location (G). Former cylinder heads with a 9L9270 casting part number, used three 2B947 Bolts [57.0 mm (2.25") long]. These bolts must be replaced with three L1329 Bolts [76.0 mm (3.00") long], which are not included in this cylinder head assembly.
2 Put the cylinder head in position on the engine. Put engine oil on the threads of the cylinder head bolts, and install the bolts in their correct