PLUG GP-CYLINDER HEAD 3461841 - Caterpillar

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Remove two bolts (2) and the washers from each end of inlet air manifold (4). Disconnect flange (3) and air inlet elbow (1) from each end of air manifold (4) .
Illustration 2 g00653991
Illustration 3 g00653993
Remove twelve bolts (6) and the washers that hold six air inlet elbows (5) to air manifold (4) .
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Remove four bolts (7) that hold air manifold (4) to the engine.
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Attach Tooling (A) to air manifold (4), as shown. Position a suitable lifting device on Tooling (A). Secure the lifting device to a suitable hoist. Remove air manifold (4) from the engine. The weight of the air manifold is 68 kg (150 lb).
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Remove O-ring seal (8) from each air inlet elbow (5) .Installation Procedure
Table 2
Required Tools    
Tool    Part Number    Part Description    Qty    
A     138-7575     Link Bracket     2    
B     0S-1619     Bolt     4    Note: Check all of the O-ring seals and the components for wear or for damage. Replace the components, if necessary. Clean all of the components with a cloth that is free of loose material (lint).
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Install O-ring seal (8) on each air inlet elbow (5) .
Illustration 8 g00653997
Tooling (B) (not shown) must be modified in order to be used as guide bolts. Position Tooling (B) in a suitable vise (not shown). Remove the heads of the bolts. Install Tooling (B) into the four holes for the bolts that hold the air manifold to the engine.
Attach Tooling (A) to air manifold (4). Position a suitable lifting device on Tooling (A). Secure the lifting device to a suitable hoist. Lift air manifold (4) into position on the engine, as shown. Use Tooling (B) (not shown) in order to correctly align the air manifold. The weight of the air manifold is 68 kg (150 lb).
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Remove Tooling (B) (not shown). Install four bolts (7) that hold air manifold (4) to the engine.
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Install twelve bolts (6) and the washers that hold six air inlet elbows (5) to air manifold (4) .
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Connect flange (3) and air inlet elbow (1) to each end of air manifold (4). Install two bolts (2) and the washers to each end of air manifold (4) that hold air inlet elbow (1) and flange (3) in position.End By: Install the aftercooler. Refer to Disassembly and Assembly, "Aftercooler - Install".