Camshaft Cover and Turbocharger Installation

WARNING: This page is about a different variant/trim than selected.

Fig 1: Exploded View Of Camshaft Cover And Turbocharger Components With Tightening Sequence

Courtesy of GENERAL MOTORS COMPANY

NOTE: Callouts items in the following chart represent components shown in graphic above.

Camshaft Cover and Turbocharger Installation

Callout	Component Name
1	Turbocharger Oil Return Pipe Gasket NOTE: Use a NEW gasket.
2	Turbocharger Oil Return Pipe Gasket NOTE: Use a NEW gasket.
3	Turbocharger Oil Return Pipe
4	Turbocharger Oil Return Pipe Bolt [2x] CAUTION: Refer to Fastener Caution . Tighten 10 N.m (89 lb in)
5	Turbocharger Oil Feed Pipe Gasket NOTE: Use a NEW gasket.
6	Turbocharger Oil Feed Pipe Washer [2x] NOTE: Use NEW washers.
7	Turbocharger Oil Feed Pipe
8	Turbocharger Oil Feed Pipe Bolt Tighten 35 N.m (26 lb ft)
9	Camshaft Cover Gasket NOTE: Ensure all camshaft cover gaskets are replaced, including the inner gaskets. Procedure Assemble the camshaft cover and NEW gaskets. Ensure each gasket is located in the correct retaining groove in the camshaft cover.
10	Camshaft Cover & Positive Crankcase Ventilation Tube & Turbocharger NOTE: The tamper-proof positive crankcase ventilation system includes components that may be replaced if necessary. The system may include an outlet duct connected to the end of the Positive Crankcase Ventilation Tube. Procedure The assistance of a second technician may be necessary to support and move the assembly during installation. Ensure proper use of room temperature vulcanizing (RTV) sealant. Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant Add a 14 mm bead of sealant at the right and left T-joint where the front cover meets the cylinder head and at the rear of the camshaft cover at the right and left T-joint where the vacuum pump bolts on. Refer to Adhesives, Fluids, Lubricants, and Sealers . NOTE: Be careful when moving the assembled components with tamper-proof fittings to avoid stress on the connections. Install the camshaft cover and turbocharger in position.
11	Camshaft Cover Bolt [17x] Procedure Hand start the bolts. Tighten all camshaft cover bolts in sequence.
12	Camshaft Cover Bolt [4x] Procedure Tighten the camshaft cover bolts in sequence to 10 N.m (89 lb in).
13	Turbocharger Nut [4x] NOTE: Use NEW retaining nuts. CAUTION: Refer to Torque-to-Yield Fastener Caution . Procedure Tighten the NEW turbocharger nuts a first pass in sequence to 30 N.m (22 lb ft). Tighten the NEW turbocharger nuts a final pass in sequence to 90 degrees. Special Tools EN-45059 Angle Meter Equivalent regional tools: Special Tools .
14	Turbocharger Oil Return Pipe Bolt [2x] Tighten 10 N.m (89 lb in)
15	Turbocharger Oil Feed Pipe Bolt [2x] Tighten 10 N.m (89 lb in)