Chemical Test Method: Overview Jeep Liberty II

Combustion leaks into the cooling system can also be checked by using Bloc-Chek Kit C-3685-A or equivalent. Perform test following the procedures supplied with the tool kit.

Scheme 65

Scheme 66

Scheme 67

1. Disconnect battery negative cable.
2. Raise the vehicle on a hoist.
3. Disconnect the exhaust pipe at the right side exhaust manifold.
4. Drain the engine coolant. Refer to «Cooling - Standard Procedure»(ref-350049-S21995734202009121400000)
5. Lower the vehicle.
6. Remove the intake manifold. See «Engine/Manifolds/MANIFOLD, Intake - Removal»(ref-350033-S05468955922009121400000) .
7. Remove the cylinder head cover. See «Engine/Cylinder Head/COVER(S), Cylinder Head - Removal»(ref-350033-S30312565002009121400000) .
8. Remove the fan shroud. Refer to «Cooling/Engine/FAN, Cooling - Removal»(ref-350049-S33089968402009121400000) .
9. Remove oil fill housing from cylinder head.
10. Remove accessory drive belt. Refer to «Cooling/Accessory Drive/BELT, Serpentine - Removal»(ref-350049-S42585242162009121400000) .
11. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark. (2).
12. Verify the V6 mark on the camshaft sprocket is at the 12 o'clock position . Rotate the crankshaft one turn if necessary.
13. Remove the crankshaft damper. See «Engine/Engine Block/DAMPER, Vibration - Removal»(ref-350033-S16286550892009121400000) .
14. Remove the timing chain cover. See «Engine/Valve Timing/COVER(S), Engine Timing - Removal»(ref-350033-S09176476182009121400000) . 1 - SPECIAL TOOL 8429 2 - CAMSHAFT CHAIN 3 - CRANKSHAFT TIMING GEAR
15. Lock the secondary timing chains to the idler sprocket using the Secondary Camshaft Chain Holder 8429 (1). NOTE: Mark the secondary timing chain prior to removal to aid in installation.
16. Mark the secondary timing chain, one link on each side of the V6 mark on the camshaft drive gear.
17. Remove the right side secondary chain tensioner. See «Engine/Valve Timing/CHAIN and SPROCKETS, Timing - Removal»(ref-350033-S07833440102009121400000) . 1 - RIGHT CYLINDER HEAD ACCESS PLUG 2 - LEFT CYLINDER HEAD ACCESS PLUG
18. Remove the cylinder head access plug (1,2).
19. Remove the right side secondary chain guide. See «Engine/Valve Timing/CHAIN and SPROCKETS, Timing - Removal»(ref-350033-S07833440102009121400000) . CAUTION: The nut on the right side camshaft sprocket should not be removed for any reason, as the sprocket and camshaft sensor target wheel is serviced as an assembly. If the nut was removed, tighten nut to 5 N.m (44 in. lbs.).
20. Remove the retaining bolt and the camshaft drive gear. CAUTION: Do not allow the engine to rotate. severe damage to the valve train can occur. CAUTION: Do not overlook the four smaller bolts at the front of the cylinder head. Do not attempt to remove the cylinder head without removing these four bolts. CAUTION: Do not hold or pry on the camshaft target wheel for any reason. A damaged target wheel can result in a vehicle no start condition. * - INDICATES SEALANT ON THREADS NOTE: The cylinder head is attached to the cylinder block with twelve bolts.
21. Remove the cylinder head retaining bolts .
22. Remove the cylinder head and gasket. Discard the gasket. CAUTION: Do not lay the cylinder head on its gasket sealing surface, do to the design of the cylinder head gasket any distortion to the cylinder head sealing surface may prevent the gasket from properly sealing resulting in leaks.