CAP-RAIN 2430218 - Caterpillar

A longer bolt (6) and a thicker spacer (4) are used to fasten the sections of the exhaust manifold to the cylinder heads. See Illustration 2. This change will help maintain force that fastens the sections of the exhaust manifold to the cylinder heads.
Illustration 2 g00850650
This illustration shows the front view of a typical exhaust manifold group. (4) 203-2163 High Temperature Spacer (5) 5M-2894 Hard Washer (6) 5P-3875 Bolt (X) Exhaust Manifold (Y) Cylinder HeadAdaptable To: Two new 203-2143 Exhaust Manifold Sleeves (1) and one 127-8269 Exhaust Seal (3) replace each 1W-5499 Exhaust Manifold Sleeve in the Exhaust Manifold Groups that are identified in Table 1. Illustration 1 shows the locations of the new sleeves (1) and seals (3) in a typical exhaust manifold group.A new 203-2143 Exhaust Manifold Sleeve (2) replaces each 153-7474 Exhaust Manifold Sleeve in the Exhaust Manifold Groups that are identified in Table 1. Illustration 1 shows the locations of the new sleeves (2) in a typical exhaust manifold group. The 153-7474 Exhaust Manifold Sleeves can be reused if the inside diameter is enlarged. See Illustration 3 for the correct inside diameter.
Illustration 3 g00838928
This illustration shows a 153-7474 Exhaust Manifold Sleeve. Dimension (A) of the modified 153-7474 Exhaust Manifold Sleeve must equal 116.3 0.025 mm (4.58 0.0010 inch).One new 203-2163 High Temperature Spacer (4) and one new 5P-3875 Bolt (6) replace each 198-0230 High Temperature Spacer and 5P-3961 Bolt in the Exhaust Manifold Groups that are identified in Table 1. Illustration 2 shows the location of the new spacers and bolts in a typical exhaust manifold group. Apply a light coat of 4C-5598 High Temperature Anti-Seize to the threads of the bolts (6) before the bolts are installed. Tighten bolts (6) to a torque of 50 5 N m (37 4 lb ft).Note: Do not overtighten the bolts (6) that fasten the exhaust manifolds to the cylinder heads. The bolts may fail if the bolts are overtightened.Table 2 lists the effectivity of the new components in the machine engines.
Table 1
Identification Of Exhaust Manifold Groups    
Machine    Machine
S/N    Part Number Of The Exhaust Manifold Group    
Machines That Are Powered By 3508 Engines    
D11N     4HK, 74Z     9Y-7673    
D11R     8ZR    
776B     6JC    
776C     2TK    
777B     4YC, 3NF    
777C     4XJ    
5130     7TJ, 5ZL    
D11R     AAF, 9TR, 9XR, 7PZ     121-5731    
776D     5ER, AFS    
777C     4XJ    
777D     AGC, 3PR    
5130B     4CS    
854G     AMP, 1JW     115-0550    
992G     7HR, ADZ    
Machines That Are Powered By 3512 Engines    
784B     5RK     2W-0212    
785     8GB    
785B     6HK    
777D HAA     2YW, AGY     103-0940    
784C     2PZ    
785C     1HW, APX    
797     5YW     155-0425    
Machines That Are Powered By 3516 Engines    
789     9ZC     2W-3708    
789B