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.
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HOMESERVICE MANUALSCHEVROLET2006HHR L4-2.4LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINETIMING COMPONENTSTIMING COMPONENT ALIGNMENT MARKSLOCATIONS
2006 Chevrolet HHR L4-2.4L
Timing Component Alignment Marks: Locations
2006 Chevrolet HHR L4-2.4LSECTION Locations
^ If replacing the balance shaft timing chain, perform the following steps, if not proceed to step 10.
^ Install the balance shaft drive sprocket.
^ Important: If the balance shafts are not properly timed to the engine, the engine may vibrate or make noise.
Install the balance shaft drive chain (1) with the colored link lined up with the marks on the balance shaft sprockets and the balance shaft drive sprocket. There are three colored links on the chain. Two are chrome and one is copper. Use the following steps in order to line up the links with the sprockets.
^ Place the copper link (5) so that it lines up with the timing mark (2) on the intake side balance shaft sprocket.
^ Working clockwise around the chain, place the chrome link (4) in line with the timing mark (3) on the balance shaft drive sprocket. (approximately 6 o'clock position on the sprocket)
^ Place the chain (7) on the water pump drive sprocket. The alignment is not critical.
^ Align the last chrome link (6) with the timing mark (1) on the exhaust side balance shaft drive sprocket.
10. Install the timing chain crankshaft sprocket to the crankshaft with the timing mark in the 5 o'clock position.
^ Important:
^ There are 3 colored links on the timing chain. Two links are pink in color and one link is blue in color. Use the following procedure to line up the links with the sprockets. Orient the chain so that the colored links are visible.
^ Always use NEW actuator bolts.
Assemble the intake camshaft actuator to the timing chain with the timing mark lined up with the blue colored link (1). Install and hand tighten a NEW intake camshaft actuator bolt.
^ Lower the timing chain through the opening in the cylinder head. Use care to ensure that the chain goes around both sides of the cylinder block bosses (1, 2).
^ Route the timing chain around the crankshaft sprocket and line up the first pink link with the timing mark on the crankshaft sprocket, in approximately the 5 o'clock position.
14. Install the adjustable timing chain guide through the opening in the cylinder head. Install the adjustable timing chain bolt.
Tighten the bolt to 10 Nm (89 inch lbs.).
^ Align the timing mark on the actuator with the last pink colored link. Tighten the bolt finger tight.
^ Notice: Do not rotate either camshaft more than half turn in either direction with crankshaft at top dead center (TDC). To do so may cause valve to piston contact resulting in a damaged valve and/or a damaged piston.
If the camshaft is 180 degrees out of time, use the following procedure to re-align the camshaft. Using a 24-mm wrench, first turn the intake camshaft until the alignment feature on the back of the camshaft actuator seats in the notch in the front of the intake camshaft.
1 Turn the crankshaft 45 degrees in either direction.
2 Turn the intake cam to the appropriate location.
3 Turn the crankshaft back to TDC.
RENDER: 1.0x
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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.