PLATE 1905265 - Caterpillar

Removal Procedure
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.Dispose of all fluids according to local regulations and mandates.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: There are several possible configurations of the aftercooler. The following procedure illustrates a typical example.Note: The following procedure was performed on a 3408E engine. However, the process for the 3412E engine is very similar.
Drain the coolant from the aftercooler core and the water lines into a suitable container for storage or disposal.
Illustration 1 g00579401
Typical example
Remove bolt (5), the washer, and the spacer.
Remove bolt (2) and the washer from the clip.
Disconnect fuel line (1). Cap all male openings and plug all female openings immediately.
Remove bolts (3). Remove elbow (4).
Illustration 2 g00579403
Typical example
Disconnect fuel line (8). Cap all male openings and plug all female openings immediately.
Remove bolts (7). Remove relief valve housing (6).
Illustration 3 g00579404
Typical example
Remove bolts (9). Remove elbow (10) and the O-ring seals.
Remove bolts (13) and the washers.
Remove clips (12) and bracket (11).
Remove aftercooler cover (14) and the gasket.
Illustration 4 g00579407
Typical example
Remove bolts (15) and the washers.
Illustration 5 g00579409
Typical example
Remove bolts (20), elbow (19), and the O-ring seal.
Remove two adapters (16) and O-ring seal (17).
Remove two adapters (18) and the O-ring seal.
Illustration 6 g00579412
Typical example
Attach a suitable lifting device to the lifting brackets on aftercooler core (21).
Remove the aftercooler core from the housing. The weight of the aftercooler core is approximately 26 kg (57 lb).
Remove O-ring seals (22).
Illustration 7 g00579413
Typical example
If necessary, remove bolts (24) and the washers. Remove aftercooler housing (23).
Illustration 8 g00579418
Typical example
Remove gasket (25) for the aftercooler housing.