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Valve Spring

Engine, Cooling and Exhaust › Engine
Unified entry — merged from multiple cross-listed pages in the original manual.

Parts

PartIntake
ManufacturerCHY
OEM part #53021887AA
Price$1.95
PartExhaust
ManufacturerCHY
OEM part #53021873AA
Price$6.50

Labor

Replace — All Cylinders8.4 hr
Warranty 0.0 hrSkill B
Procedures
Valve Springs - Installation — Left Cylinder Head10 steps
ℹ NOTE
All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
ℹ NOTE
The valve stem seals are common between intake and exhaust.
ℹ NOTE
The valve springs are NOT common between intake and exhaust.
ℹ NOTE
the valve spring is under tension use care when releasing the valve spring compressor.
Fig. 1
Fig. 1
  1. Apply shop air to the cylinder to hold the valves in place while the spring is installed.
  2. Install the valve stem seal.
  3. Install the spring retainer, and the spring.
  4. Using the Valve Spring Compressor , compress the valve spring.
  5. Install the two spring retainer lock halves.
  6. Remove the valve spring compressor.
  7. Disconnect the shop air to the cylinder.
  8. Install the spark plug for the cylinder the valve spring and seal was installed on.
  9. Using Valve Spring Remover/Installer , install the rocker arms and the hydraulic lash adjusters.
  10. Install the cylinder head coverCylinder Head Cover(s) - Installation.
Valve Springs - Installation — Right Cylinder Head10 steps
ℹ NOTE
All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
ℹ NOTE
The valve stem seals are common between intake and exhaust.
ℹ NOTE
The valve springs are NOT common between intake and exhaust.
ℹ NOTE
the valve spring is under tension use care when releasing the valve spring compressor.
Fig. 1
Fig. 1
  1. Apply shop air to the cylinder to hold the valves in place while the spring is installed.
  2. Install the valve stem seal.
  3. Install the spring retainer, and the spring.
  4. Using Valve Spring Compressor , compress the valve spring.
  5. Install the two spring retainer lock halves.
  6. Remove the valve spring compressor.
  7. Disconnect the shop air to the cylinder.
  8. Install the spark plug for the cylinder the valve spring and seal was installed on.
  9. Using the Valve Spring Remover/Installer Special Tool , install the rocker arms and the hydraulic lash adjusters.
  10. Install the cylinder head coverCylinder Head Cover(s) - Installation.
Valve Springs - Removal — Left Cylinder Head9 steps
ℹ NOTE
All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
ℹ NOTE
It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.
ℹ NOTE
the valve spring is under tension use care when releasing the valve spring compressor.
ℹ NOTE
The valve springs are NOT common between intake and exhaust.
ℹ NOTE
The valve stem seals are common between intake and exhaust.
Fig. 1
Fig. 1
  1. Remove the cylinder head coverCylinder Head Cover(s) - Removal.
  2. Using the Valve Spring Remover/Installer , remove the rocker arms and the hydraulic lash adjusters.
  3. Remove the spark plug for the cylinder the valve spring and seal are to be removed from.
  4. Apply shop air to the cylinder to hold the valves in place when the spring is removed.
  5. Using the Valve Spring Compressor , compress the valve spring.
  6. Remove the two spring retainer lock halves.
  7. Remove the valve spring compressor.
  8. Remove the spring retainer, and the spring.
  9. Remove the valve stem seal.
Valve Springs - Removal — Right Cylinder Head9 steps
ℹ NOTE
All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
ℹ NOTE
It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.
ℹ NOTE
the valve spring is under tension use care when releasing the valve spring compressor.
ℹ NOTE
The valve springs are NOT common between intake and exhaust.
ℹ NOTE
The valve stem seals are common between intake and exhaust.
Fig. 1
Fig. 1
  1. Remove the cylinder head coverCylinder Head Cover(s) - Removal.
  2. Using the Valve Spring Remover/Installer , remove the rocker arms and the hydraulic lash adjusters.
  3. Remove the spark plug for the cylinder the valve spring and seal are to be removed from.
  4. Apply shop air to the cylinder to hold the valves in place when the spring is removed.
  5. Using the Valve Spring Compressor , compress the valve spring.
  6. Remove the two spring retainer lock halves.
  7. Remove the valve spring compressor.
  8. Remove the spring retainer, and the spring.
  9. Remove the valve stem seal.
Factory service manual
From the 2008 KK factory manual — descriptions, specs, torque & procedures for this part.
VALVES AND VALVE SPRINGS📷 1
1 - CAMSHAFT 2 - VALVE SPRING COMPRESSOR 10102
NOTE: The cylinder heads must be removed in order to perform this procedure.
1. Remove rocker arms and lash adjusters. See REMOVAL. 2. Remove the camshaft bearing caps and the camshaft.
NOTE: All valve springs and valves are removed in the same manner; this procedure only covers one valve and valve spring.
3. Using Valve Spring Compressor C-3422-B or C-3422-C and Adapter 8519, compress the valve spring.
NOTE: It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.
4. Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
5. Remove the valve spring compressor. 6. Remove the spring retainer, and the spring.
NOTE: Check for sharp edges on the keeper grooves. Remove any burrs from the valve stem before removing the valve from the cylinder head.
7. Remove the valve from the cylinder head.
NOTE: The valve stem seals are common between intake and exhaust.
8. Remove the valve stem seal. Mark the valve for proper installation.
figure
TESTING VALVE SPRINGS📷 1
1 - SPECIAL TOOL C-647
NOTE: Whenever the valves are removed from the cylinder head it is recommended that the valve springs be inspected and tested for reuse.
Inspect the valve springs for physical signs of wear or damage. Turn table of tool C-647 (1) until surface is in line with the 40.12 mm (1.579 in.) mark on the threaded stud and the zero mark on the front. Place spring over the stud on the table and lift compressing lever to set tone device. Pull on torque wrench until a Ping is heard. Take reading on torque wrench at this instant. Multiply this reading by two. This will give the spring load at test length. Fractional measurements are indicated on the table for finer adjustments. Refer to SPECIFICATIONS to obtain specified height and allowable tensions. Replace any springs that do not meet specifications.
figure
VALVES AND VALVE SPRINGS📷 2
1 - VALVE LOCKS (3-BEAD) 2 - RETAINER 3 - VALVE STEM OIL SEAL
4 - INTAKE VALVE 5 - EXHAUST VALVE 6 - VALVE SPRING
1. coat the valve stem with clean engine oil and insert it into the cylinder head. 2. Install the valve stem seal. make sure the seal is fully seated and that the garter spring at the top of the seal is intact. 3. Install the spring and the spring retainer. 4. Using the valve spring compressor, compress the spring and install the two valve spring retainer halves. 5. Release the valve spring compressor and make sure the two spring retainer halves and the spring retainer are fully seated. See Fig. 65.
6. Lubricate the camshaft journal with clean engine oil then Position the camshaft (with the sprocket dowel on the left camshaft at 11 o'clock and the right camshaft at 12 o'clock), then position the camshaft bearing
caps. 7. Install the camshaft bearing cap retaining bolts. Tighten the bolts 9-13 N.m (100 in. lbs.) in 1/2 turn increments in the sequence shown in illustration. See Fig. 66. 8. Position the hydraulic lash adjusters and rocker arms. See INSTALLATION.
ARM-VALVE ROCKER
figure
figure
VALVE SPRINGS
The valve springs are made from high strength chrome silicon steel. The springs are NOT common for intake and exhaust applications. The exhaust spring has an external damper. The valve spring seat is integral with the valve stem seal, which is a positive type seal to control lubrication.
VALVE SPRINGS
1. Remove the cylinder head cover. See REMOVAL. 2. Using the Valve Spring Remover/Installer 8516A, remove the rocker arms and the hydraulic lash adjusters. 3. Remove the spark plug for the cylinder the valve spring and seal are to be removed from. 4. Apply shop air to the cylinder to hold the valves in place when the spring is removed.
NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
5. Using the Valve Spring Compressor 8387, compress the valve spring.
NOTE: It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.
6. Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
7. Remove the valve spring compressor.
NOTE: The valve springs are NOT common between intake and exhaust.
8. Remove the spring retainer, and the spring. 9. Remove the valve stem seal.
NOTE: The valve stem seals are common between intake and exhaust.
VALVE SPRINGS
NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
1. Apply shop air to the cylinder to hold the valves in place while the spring is installed.
NOTE: The valve stem seals are common between intake and exhaust.
2. Install the valve stem seal.
NOTE: The valve springs are NOT common between intake and exhaust.
3. Install the spring retainer, and the spring. 4. Using the Valve Spring Compressor 8387, compress the valve spring. 5. Install the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
  6.   Remove the valve spring compressor.
  7.   Disconnect the shop air to the cylinder.
  8.   Install the spark plug for the cylinder the valve spring and seal was installed on.
  9.   Using Valve Spring Remover/Installer 8516, install the rocker arms and the hydraulic lash adjusters.
 10.   Install the cylinder head cover. See INSTALLATION.
CYLINDER HEAD - RIGHT
VALVES AND VALVE SPRINGS📷 1
1 - CAMSHAFT 2 - VALVE SPRING COMPRESSOR 10102
NOTE: The cylinder heads must be removed in order to perform this procedure.
1. Remove rocker arms and lash adjusters. See REMOVAL. 2. Remove the camshaft bearing caps and the camshaft.
NOTE: All valve springs and valves are removed in the same manner; this procedure only covers one valve and valve spring.
3. Using Valve Spring Compressor C-3422-B or C-3422-C and Adapter 8519, compress the valve spring.
NOTE: It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.
4. Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
5. Remove the valve spring compressor. 6. Remove the spring retainer, and the spring.
NOTE: Check for sharp edges on the keeper grooves. Remove any burrs from the valve stem before removing the valve from the cylinder head.
7. Remove the valve from the cylinder head.
NOTE: The valve stem seals are common between intake and exhaust.
8. Remove the valve stem seal. Mark the valve for proper installation.
figure
TESTING VALVE SPRINGS📷 1
1 - SPECIAL TOOL C-647
NOTE: Whenever the valves are removed from the cylinder head it is recommended that the valve springs be inspected and tested for reuse.
Inspect the valve springs for physical signs of wear or damage. Turn table of tool C-647 (1) until surface is in line with the 40.12 mm (1.579 in.) mark on the threaded stud and the zero mark on the front. Place spring over the stud on the table and lift compressing lever to set tone device. Pull on torque wrench until a Ping is heard. Take reading on torque wrench at this instant. Multiply this reading by two. This will give the spring load at test length. Fractional measurements are indicated on the table for finer adjustments. Refer to SPECIFICATIONS to obtain specified height and allowable tensions. Replace any springs that do not meet specifications.
figure
VALVES AND VALVE SPRINGS📷 2
1 - VALVE LOCKS (3-BEAD) 2 - RETAINER 3 - VALVE STEM OIL SEAL
4 - INTAKE VALVE 5 - EXHAUST VALVE 6 - VALVE SPRING
1. coat the valve stem with clean engine oil and insert it into the cylinder head. 2. Install the valve stem seal. make sure the seal is fully seated and that the garter spring at the top of the seal is intact. 3. Install the spring and the spring retainer. 4. Using the valve spring compressor, compress the spring and install the two valve spring retainer halves. 5. Release the valve spring compressor and make sure the two spring retainer halves and the spring retainer are fully seated. See Fig. 65.
6. Lubricate the camshaft journal with clean engine oil then Position the camshaft (with the sprocket dowel on the left camshaft at 11 o'clock and the right camshaft at 12 o'clock), then position the camshaft bearing
caps. 7. Install the camshaft bearing cap retaining bolts. Tighten the bolts 9-13 N.m (100 in. lbs.) in 1/2 turn increments in the sequence shown in illustration. See Fig. 66. 8. Position the hydraulic lash adjusters and rocker arms. See INSTALLATION.
ROCKER ARM - VALVE
figure
figure
VALVE SPRINGS
The valve springs are made from high strength chrome silicon steel. There are different springs for intake and exhaust applications. The exhaust spring has an external damper. The valve spring seat is integral with the valve stem seal, which is a positive type seal to control lubrication.
VALVE SPRINGS
1. Remove the cylinder head cover. See REMOVAL. 2. Using the Valve Spring Remover/Installer 8516A, remove the rocker arms and the hydraulic lash
adjusters. 3. Remove the spark plug for the cylinder the valve spring and seal are to be removed from. 4. Apply shop air to the cylinder to hold the valves in place when the spring is removed.
NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
5. Using the Valve Spring Compressor 8387, compress the valve spring.
NOTE: It may be necessary to tap the top of the valve spring to loosen the spring retainers locks enough to be removed.
6. Remove the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
7. Remove the valve spring compressor.
NOTE: The valve springs are NOT common between intake and exhaust.
8. Remove the spring retainer, and the spring. 9. Remove the valve stem seal.
NOTE: The valve stem seals are common between intake and exhaust.
VALVE SPRINGS
NOTE: All six valve springs and seals are removed in the same manner; this procedure only covers one valve seal and valve spring.
1. Apply shop air to the cylinder to hold the valves in place while the spring is installed.
NOTE: The valve stem seals are common between intake and exhaust.
2. Install the valve stem seal.
NOTE: The valve springs are NOT common between intake and exhaust.
3. Install the spring retainer, and the spring. 4. Using Valve Spring Compressor 8387, compress the valve spring.
5. Install the two spring retainer lock halves.
NOTE: the valve spring is under tension use care when releasing the valve spring compressor.
6. Remove the valve spring compressor. 7. Disconnect the shop air to the cylinder. 8. Install the spark plug for the cylinder the valve spring and seal was installed on. 9. Using the Valve Spring Remover/Installer Special Tool 8516A, install the rocker arms and the hydraulic lash adjusters. 10. Install the cylinder head cover. See INSTALLATION.
ENGINE BLOCK