SPIDER ASSEMBLY BLOWER FAN 1W0550 - Caterpillar

Removal Procedure
Start By:
Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".
Illustration 1 g01335788
Illustration 2 g01335790
Loosen bolts (2) and (5) in reverse numerical order. Refer to Illustration 2. Note: This will help prevent distortion of the exhaust manifold.
Remove center bolts (2) from exhaust manifold (3). Remove outer bolts (5) and spacers (4) from exhaust manifold (3). Note: Support the manifold as the bolts are removed.
Remove exhaust manifold (3).
Remove exhaust manifold gaskets (1).
If necessary, remove studs (6) from exhaust manifold (3). Installation Procedure (Side Mounted Exhaust Manifold)
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Guide Stud
(M10 by 100 mm) 4
B - Loctite 575 1
Illustration 3 g01335790
Illustration 4 g01335788
Ensure that the exhaust manifold is clean and free from damage. If necessary, replace the exhaust manifold. Clean the joint face of the cylinder head.
If necessary, install studs (6) to exhaust manifold (3). Tighten the studs to a torque of 18 N m (13 lb ft).
Install Tooling (A) to the cylinder head in positions (X). Refer to Illustration 3.
Position two new exhaust manifold gaskets (1) onto Tooling (A). Note: Ensure that the word TOP is outward and upward.
Align exhaust manifold (3) with Tooling (A). Install the exhaust manifold to the cylinder head.
If bolts (2) and (5) have been previously used, the bolts should be thoroughly cleaned. Tooling (B) should be applied to the first two threads of the bolts. Note: Do not apply Tooling (B) to new bolts.
Install bolts (2) finger tight. Install bolts (5) and spacers (4) finger tight.
Remove Tooling (A). Install remaining bolts (2) finger tight. Install remaining bolts (5) and spacers (4) finger tight.
Tighten bolts (2) and (5) to a torque of 44 N m (32 lb ft). Tighten the bolts in the sequence that is shown in Illustration 3. End By:
Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".