- Install the hydraulic
element lash adjusters into their bores in the cylinder head.
- Lubricate the hydraulic lash adjusters with GM P/N United
States 12345501, GM P/N Canada 992704.
- Lubricate the valve tips.
Important: Used roller followers must be returned to the original position on the
camshaft. If the camshaft is being replaced, the roller followers actuated
by the camshaft must also be replaced.
- Position the roller followers on the tip of the valve stem and on the
lash adjustor. Lubricate roller followers with GM P/N United
States 12345501, GM P/N Canada 992704.
- Set the intake camshaft
on top of the roller followers in the camshaft bearing journals. Lubricate
with GM P/N United States 12345501, GM P/N Canada 992704.
- Install the camshaft bearing caps and hand start the camshaft
cap bolts.
- The timing chain sprocket alignment notch should be oriented to the
eleven o'clock position.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Tighten the camshaft bearing cap bolts in increments of three
turns until they are seated.
Tighten
Tighten the camshaft bearing caps to 10 N·m (89 lb in).
- Apply anerobic sealer,
5 mm (0.197 in) bead, GM P/N United States 1052942,
GM P/N Canada 10953466 to rear intake camshaft bearing
cap.
- Install the rear intake camshaft bearing cap bolts.
Tighten
Tighten the bolts to 25 N·m (18 lb ft).
- Install the hydraulic
element lash adjusters into their bores in the cylinder head.
- Lubricate the hydraulic lash adjusters with engine oil supplement.
- Lubricate the valve tips
with engine oil supplement.
Important: Used roller followers must be returned to the original position on the
camshaft. If the camshaft is being replaced, the roller followers actuated
by the camshaft must also be replaced.
- Position the roller followers on the tip of the valve stem and on the
lash adjuster. Lubricate the roller followers with engine oil supplement.
- Set the intake camshaft
on top of the roller followers in the camshaft bearing journals and lobes.
Lubricate with engine oil supplement.
- Install the camshaft bearing caps and hand start the camshaft
cap bolts.
- The timing chain sprocket alignment notch should be oriented to the
eleven o'clock position.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Tighten the camshaft bearing cap bolts in increments of three
turns until they are seated.
Tighten
Tighten the camshaft bearing caps to 10 N·m (89 lb in).
- Apply Permatex® Anaerobic
Gasket Maker 51813, 3.5 mm (0.138 in) bead, to rear intake camshaft
bearing cap.
- Install the rear intake camshaft bearing cap bolts.
Tighten
Tighten the bolts to 25 N·m (18 lb ft).