Hyundai Tucson Quiz
Engine Mechanical System

CYLINDER HEAD COVER

In this manual: Engine Mechanical System
General Information — 17Engine Mechanical System — 51Engine Electrical System — 26Emission Control System — 23Engine/Fuel Control System — 44Clutch System — 12MANUAL TRANSMISSION SYSTEM — 12AUTOMATIC TRANSMISSION SYSTEM — 42Four-Wheel Drive (4WD) System — 14Drive Shaft and Axle — 22Suspension System — 30Steering System — 16Restraint — 21Braking System — 47Body Work (Interior and Exterior) — 145Body Electrical System — 162Heating, Ventilation and Air Conditioning — 39
43steps
~278min
5/5difficulty
4special tools
0102030405011.89N·mlb·ft
Tightening torque found on this page
Done 0 of 43

Components and Component Location

COMPONENTS

1. Camshaft Holder
2. Cylinder Head
3. Cylinder Head Gasket
4. Retainer Lock
5. Retainer		 6. Valve Spring
7. Valve Stem Seal
8. Valve
9. Rocker Arm
10. Hydraulic Lash Adjuster (HLA)

Repair Procedures

DEPOSIT

It is not necessary to remove the engine during this procedure.
  1. Remove the battery. (Refer to Engine Electrical System - "Battery".)
  2. Remove the air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleaner")
  3. Remove the battery tray. (Refer to Engine Electrical System - "Battery")
  4. Remove the engine undercover. (Refer to Engine and Transaxle Assembly - "Engine Undercover")
  5. Remove the vacuum hose (A).

    Tightening torque: 9.8–11.8 N·m

  6. Remove the condenser (A).

    Tightening torque: 9.8–11.8 N·m

  7. Remove the high pressure fuel pump. (Refer to Engine Control and Fuel System - "High Pressure Fuel Pump")
  8. Remove the cylinder head cover. (Refer to Cylinder Head - "Cylinder Head Cover")
  9. Remove the timing chain. (Refer to Valve Timing System - Timing Chain)
  10. Remove the exhaust manifold. (Refer to Intake and Exhaust System - "Exhaust Manifold")
  11. Remove the intake manifold. (Refer to Exhaust and Intake System - "Intake Manifold")
  12. Remove the fuel feed pipe. (Refer to Engine Control/Fuel System - "Fuel Hose")
  13. Remove the water temperature control unit. (Refer to Cooling System - "Water Temperature Control")
  14. Remove the intake (A) and exhaust (B) CVVTs.
  15. Remove the camshaft.
    1. Remove the camshaft bearing cap (A) by loosening the bolts in the indicated sequence.
    2. Remove the camshaft (A).
  16. Remove the camshaft holder (A).
  17. Remove the HLA (hydraulic lash adjuster) (A) and rocker arm (B).
  18. Remove the oil control adapter (A) with the gasket (B).
  19. Remove the intake OCV (oil control valve) (A).
  20. Remove the exhaust OCV (oil control valve) (A).
  21. Remove the rear engine mount (A).
  22. Remove the spark plugs. (Refer to Engine Electrical System - Spark Plug.)
  23. Remove the cylinder head.
    1. Using a 12-point socket, loosen and remove the cylinder head bolts evenly in several steps, in the order shown.
    2. Lift the cylinder head (A) off the guide pins on the cylinder block and place it on wooden blocks and a workbench.
    3. Remove the cylinder head gasket (B).

DISASSEMBLY

  1. Remove the valves.
    1. Using SST (09222-3K000, 09222-3K100), compress the valve spring and retainer lock (A).
    2. Remove the spring seat (B).
    3. Remove the valve spring (C).
    4. Remove the valve (D).
    5. Using needle-nose pliers, remove the valve stem oil seal (E).

Inspection

CYLINDER HEAD COVER
  1. Inspect the cylinder head for flatness.
    Using a straightedge and feeler gauge, measure the mating surfaces of the cylinder block and manifolds to check for distortion. Cylinder head gasket surface flatness: Overall less than 0.05 mm (0.0020 in.). Less than 0.02 mm (0.0008 in.) for a 100 mm (3.9370 in.) x 100 mm (3.9370 in.) section.

    Manifold mounting surface flatness: Less than 0.10 mm (0.0039 in.)

  2. Inspect for cracks. Check the combustion chambers, intake and exhaust ports and the cylinder block surface for cracks. If cracked, replace the cylinder head.
  3. Inspect the valve stems and valve guides.
    1. Using a caliper gauge, measure the inside diameter of the valve guide. Valve guide inside diameter: Intake: 5.500 - 5.512 mm (0.21654 - 0.21701 in.) Exhaust: 5.500 - 5.512 mm (0.21654 - 0.21701 in.)
    2. Using a micrometer, measure the diameter of the valve stem. Valve stem outside diameter: Intake: 5.465 - 5.480 mm (0.21516 - 0.21575 in.) Exhaust: 5.458 - 5.470 mm (0.21488 - 0.21535 in.)
    3. Subtract the valve stem diameter from the valve guide inside diameter. If the clearance exceeds the specification, replace the valve or cylinder head. VALVE STEM TO GUIDE CLEARANCE [STANDARD] Intake: 0.020 - 0.047 mm (0.00079 - 0.00185 in.) Exhaust: 0.030 - 0.054 mm (0.00118 - 0.00213 in.)
  4. Inspect the valves.
    1. Inspect the valve face angle.
    2. Make sure the valve face is not damaged. If the valve face is worn, replace the valve.
    3. Inspect the valve head margin thickness. If the margin thickness is less than specification, replace the valve.

      MARGIN THICKNESS [STANDARD] Intake: 1.30 mm (0.0512 in.) Exhaust: 1.26 mm (0.0496 in.)

    4. Inspect the valve length. VALVE LENGTH [STANDARD] Intake: 102.22 mm (4.0244 in.) Exhaust: 104.04 mm (4.0961 in.) [LIMIT] Intake: 101.97 mm (4.0146 in.) Exhaust: 103.79 mm (4.0862 in.)
    5. Check the valve stem end surface for damage. If the valve stem end is worn, replace the valve.
  5. Inspect the valve seats and valve guides.
    1. Check the valve seat for overheating or contact with the valve face. If the valve seat is worn, replace the cylinder head.
    2. Inspect the valve guide for wear. If the valve guide is worn, replace the cylinder head.
  6. Inspect the valve springs.
    1. Using a steel square, measure the valve spring squareness.
    2. Using a caliper, measure the free length of the valve spring. If the free length is not within specification, replace the valve spring. VALVE SPRING [STANDARD] Free height: 45.93 mm (1.8083 in.) Out-of-square: Less than 1.5°
VALVE AND VALVE SPRING HLA (Hydraulic Lash Adjuster) After filling the hydraulic lash adjuster with engine oil, hold A and press B by hand. If B moves, replace the hydraulic lash adjuster.
Problem Possible Cause Patch
1. Temporary noise when starting a cold engine Normal This noise will disappear when the engine oil pressure reaches the normal value.
2. Continuous noise when starting the engine after it has been parked for more than 48 hours Oil leaks out of the high-pressure chamber of the HLA, causing air to appear to enter. The noise will disappear within 15 minutes with the engine running at 2000-3000 rpm.
If it does not disappear, refer to item 7 below.
3. Continuous noise when starting the engine for the first time after assembling the cylinder head Insufficient oil in the oil passage of the cylinder head gasket.
4. Continuous noise when starting the engine after excessive cranking with the starter
  • Oil leaks out of the high-pressure chamber into the hydraulic lash adjuster, allowing air to enter.
  • Insufficient oil in the hydraulic lash adjuster
5. Continuous noise with the engine running after replacing the hydraulic lash adjuster
6. Continuous noise at idle after running the engine at high speed Engine oil level is too high or too low
  • Check the oil level.
  • Drain or add oil as necessary.
Excessive air in the oil at high engine speed. Inspect the oil supply system.
Deteriorated oil. Check the oil quality.
If it is contaminated, replace it with the specified type.
7. Noise lasts more than 15 minutes. Low oil pressure. Check the oil pressure and oil supply system for each engine part.
Defective HLA Remove the cylinder head cover and press the hydraulic lash adjuster by hand.
If it moves, replace the hydraulic lash adjuster.

Installation

  1. Install the valves.
    1. Using the special service tool (09222-2E000), install a new rod seal (A).
    2. Install the valve, valve spring and spring retainer.
    3. Using the special service tools (09222-3K000, 09222-3K100), compress the spring and install the retainer locks. Before releasing the valve spring compression, make sure the retainer locks are installed correctly. Then press and release the compressor handle 2 to 3 times.

REMEDY

  1. Install the cylinder head gasket (B) on the cylinder block.
    1. Remove hardened sealant, oil, dust, moisture and foreign material from the cylinder block and cylinder head.
    2. Apply liquid gasket to the edge of the cylinder block.
    3. Install the cylinder head gasket using the dowel pins on the cylinder block.
    4. Apply liquid gasket to the edge of the cylinder head gasket.

      Sealant: Threebond 1217H or equivalent

  2. Carefully install the cylinder head (A) so as not to damage the gasket. Be careful not to drop the cylinder head during installation.
  3. Install the cylinder head bolts with washers. Using the special service tool (09221-4A000), install and tighten the 10 cylinder head bolts several times in the specified sequence. Tightening torque: Step 1: 32.4 to 36 N·m Step 2: 90 to 95° Step 3: 90 to 95°
  4. Install the rear engine mount (A).

    Tightening torque: 34.3 to 39 N·m

  5. Install the OCV (oil control valve exhaust side) (A).

    Tightening torque: 9.8–11.8 N·m

  6. Install the OCV (oil control valve intake side) (A).

    Tightening torque: 9.8–11.8 N·m

  7. Install the oil supply control adapter (A) with a new gasket (B).

    Tightening torque: 9.8–11.8 N·m

  8. Install the water temperature control unit. (Refer to Cooling System - Water Temperature Control.)
  9. Install the HLA (hydraulic lash adjuster) (A) and rocker arm (B).
    1. When installing the HLA, hold it upright so that engine oil inside the HLA does not run out, and make sure dust does not adhere to the HLA.
    2. Insert the HLA carefully at cylinder head level so that engine oil does not splash.
  10. Install the camshaft carrier.
    1. Use a scraper to remove the old sealant from the sealing surfaces.
    2. The sealant contact areas on the camshaft carrier and cylinder head must be free of foreign material, harmful substances, oil, dust and moisture. Spray cleaner onto the surface and wipe with a clean cloth.
    3. After applying liquid sealant to the bottom surface of the camshaft carrier, install the camshaft carrier. Apply the sealant continuously to prevent oil leaks. Bead width: 2.5 to 3.5 mm (0.10 to 0.14 in). Sealant: Threebond 1217H or equivalent.
    4. Place the camshaft carrier (A) on the cylinder head. Use the dowel pin positions on the camshaft carrier and the holes in the cylinder head as references to install the camshaft carrier in the correct position.
    5. Tighten the camshaft carrier bolts.

      Tightening Torque: 18.6 ~ 23 N·m

  11. Install the camshafts.
    1. Place the intake and exhaust camshafts (A) on the camshaft carrier.
    2. Install the camshaft bearing cap (A).
      Tighten the bolts several times in the sequence shown. Tightening torque: M6 bolts: 11.8 to 13.7 N·m M8 bolts: 18.6 to 23 N·m
  12. Install the intake (A) and exhaust (B) CVVTs.

    Tightening torque: 64.7 ~ 76 N·m

  13. Install the remaining parts in the reverse order of removal.
  14. Add all necessary fluids and check for leaks. Connect GDS. Check codes, record and erase them. Check again.

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