ENGINE AR-PRIMARY 5088151 - Caterpillar

Removal Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g03348141
Remove nuts (2) and bolts (8) from elbow (6).
Remove allen head bolts (6) from turbocharger (4).
Remove elbow (7) from turbocharger (4) and ARD (9) (not shown).
Remove gasket (3) (not shown) and gasket (5) (not shown).
If necessary, remove studs (1) (not shown) from ARD (9) (not shown). Installation Procedure
Ensure that the exhaust elbow is clean and free from wear or damage. Ensure that the gasket surfaces of the exhaust elbow, the turbocharger, and the ARD are clean and free from wear or damage. Replace any components that are worn or damaged.
Illustration 2 g03348141
If necessary, install studs (1) (not shown) from ARD (9) (not shown). Tighten the studs to a torque of 18 N m (159 lb in).
Position a new gasket (3) (not shown) onto studs (1).
Position elbow (7) onto turbocharger (4) and ARD (9) (not shown).
Install nuts (2) and bolts (8) to elbow (6) hand tight.
Position a new gasket (5) (not shown) between turbocharger (4) and elbow (6). Ensure that the gasket is correctly orientated.
Install allen head bolts (6) to turbocharger (4) hand tight.
Tighten nuts (2) and bolts (8) to a torque of 25 N m (221 lb in).
Tighten allen head bolts (6) to a torque of 25 N m (221 lb in).