TUBE AS 4984527 - Caterpillar

Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g02176247
Ensure that turbocharger (8) is clean and free from damage. Inspect the turbocharger for wear. Refer to System Operation, Testing and Adjusting, "Turbocharger Inspect" for more information. If any part of the turbocharger is worn or damaged, the complete turbocharger must be replaced.
If necessary, follow Step 2.a through Step 2.b in order to install bracket (24) onto cylinder block (25).
If necessary, install studs (27) (not shown) to the cylinder block. Tighten the studs to a torque of 18 N m (159 lb in).
Position bracket (24) onto cylinder block (25). Install nuts (26) hand tight.
If necessary, install studs (23) to turbocharger (8). Tighten the studs to a torque of 18 N m (159 lb in).
Illustration 2 g02356216
Position turbocharger (8) onto bracket (24).
Loosely install nuts (28).
Move turbocharger (8) in the Direction (C) to ensure that studs (23) of turbocharger (8) is positioned most forward position in the holes in bracket (24).
Hand tighten nuts (28).
Illustration 3 g02352357
Illustration 4 g02352633
Use Tooling (B) in order to align the second stage turbocharger and the first stage turbocharger. Note: Ensure that the bracket for the turbocharger is correctly positioned onto the turbocharger and the cylinder block.
Tighten nuts (28) to a torque of 44 N m (32 lb ft). Tighten the nuts in the sequence that is shown in Illustration 4. Tighten nuts (26) to a torque of 44 N m (32 lb ft). Tighten the nuts in the sequence that is shown in Illustration 3.
Remove Tooling (B). Note: Ensure that the second stage turbocharger and the first stage turbocharger are correctly aligned.
Illustration 5 g02176246
Illustration 6 g02176278
Remove plugs and caps from tube assemblies. Ensure that tube assembly (14) and tube assembly (20) are clean and free from damage. Replace any damaged components.
Install a new gasket (21) (not shown) onto tube assembly (20).
Position a new gasket (19) (not shown) onto tube assembly (20).
Remove the plug from the drain port of the turbocharger. Remove the plug from the cylinder block.
Position tube assembly (20) into the cylinder block and install bolts (22) finger tight.
Position tube assembly (20) onto turbocharger (8) and install bolts (18) finger tight.
Tighten bolts (18) and bolt (22) to a torque of 22 N m (195 lb in).
Remove the plug from oil inlet port (29) for turbocharger (8). Lubricate the turbocharger bearings with clean engine oil through oil inlet port (29). Rotate the wheel of the compressor several times in order to lubricate the bearings.
Position a new gasket (15) (not shown) onto tube assembly (14) and install bolts (13). Note: Holes in the gasket have serration that hold the bolts captive.
Position tube assembly (14) onto turbocharger (8). Tighten bolts (13) finger tight.
Remove plug from cylinder block for the oil feed tube assembly. Install new sealing washers (16) (not shown) and banjo bolt (17) to tube assembly (14). Tighten banjo bolt (17) finger tight.
Tighten bolts (13) to a torque of 22 N m (195 lb in). Tighten banjo bolt (17) to a torque of 33 N m (292