Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2009HHR L4-2.4LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYSPECIFICATIONS
2009 Chevrolet HHR L4-2.4L
Cylinder Head Assembly: Specifications
2009 Chevrolet HHR L4-2.4LSECTION Specifications
CYLINDER HEAD BOLTS
Cylinder Head Bolt
First pass 30 Nm (22 lb ft)
Final pass 155 degrees
CYLINDER HEAD BOLT RE-USABILITY
Note: Do not use any sealing material. Always use NEW cylinder head bolts
CYLINDER HEAD SURFACE VARIATION
Surface flatness Block Deck
Longitude 0.050 mm (0.002 in)
Overall 0.1 mm (0.004 in)
Transverse 0.030 mm (0.0012 in)
CYLINDER BLOCK
Cylinder Head Deck Surface Flatness
Longitude 0.050 mm (0.002 in)
Overall 0.08 mm (0.0031 in)
Transverse 0.030 mm (0.0012 in)
INTAKE MANIFOLD
Tighten the bolts and nuts to 10 Nm (89 lb in)
CAMSHAFT BEARING CAP
Cam Cover to Cylinder Head Bolt 10 Nm (89 lb in)
EXHAUST MANIFOLD
Exhaust Manifold to Cylinder Head Nut - 2 passes 14 Nm (124 lb in)
CAMSHAFT GEAR/SPROCKET
Balance Shaft Drive Sprocket Bolts 15 Nm (11 lb ft)
Cylinder Head Bolt
First pass 30 Nm (22 lb ft)
Final pass 155 degrees
CYLINDER HEAD BOLT RE-USABILITY
Note: Do not use any sealing material. Always use NEW cylinder head bolts
CYLINDER HEAD SURFACE VARIATION
Surface flatness Block Deck
Longitude 0.050 mm (0.002 in)
Overall 0.1 mm (0.004 in)
Transverse 0.030 mm (0.0012 in)
CYLINDER BLOCK
Cylinder Head Deck Surface Flatness
Longitude 0.050 mm (0.002 in)
Overall 0.08 mm (0.0031 in)
Transverse 0.030 mm (0.0012 in)
INTAKE MANIFOLD
Tighten the bolts and nuts to 10 Nm (89 lb in)
CAMSHAFT BEARING CAP
Cam Cover to Cylinder Head Bolt 10 Nm (89 lb in)
EXHAUST MANIFOLD
Exhaust Manifold to Cylinder Head Nut - 2 passes 14 Nm (124 lb in)
CAMSHAFT GEAR/SPROCKET
Balance Shaft Drive Sprocket Bolts 15 Nm (11 lb ft)
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.