VALVE GP-SOLENOID 3E3748 - Caterpillar

Remove Exhaust Elbow (Dry)
Start By:a. remove turbochargers (TW81, TW91) The later model turbochargers use a dry exhaust elbow as a replacement for the formerly used water cooled exhaust elbows. Couplings with metal ring seals are used as a replacement for the fiber seals and clamps. 1. Install tooling (A) on a hoist and on the exhaust elbow.2. Remove four bolts (2) and exhaust elbow (1) from the support bracket. The weight of the exhaust elbow is 57 kg (126 lb.).3. The 3508 and 3512 Engine use a different type of seal coupling than that of the 3516 Engine.
Turbocharger Elbow For (TW61, TW81, TW91)
Turbocharger Elbow For (W153)
3516 Engine Shown4. Remove coupling (3) from the exhaust elbow for 3508 and 3512 Engines. Remove coupling (6) from the exhaust elbow for 3516 Engines.5. From each coupling, remove four metal seals (5) and ring expander (4).Install Exhaust Elbow (Dry)
1. The procedure to install the seal rings is the same for the 3508, 3512 and 3516 Engines. 2. Install coupling (1) in the elbow so that the largest lug (2) is at the top part of the coupling. 3. Install expander ring (3) in the groove of the coupling. 4. Install four seal rings (4) with the gaps of each ring approximately 90° apart from each other. 5. Fasten tooling (A) and a hoist on exhaust elbow (5). Install exhaust elbow (5) on its support bracket.End By:a. install turbocharger (TW81, TW91)