Centinel System – Repair Manual – 002-016   Valve Guide Seal, Cylinder Head

Two different valve guides and valve guide seals are used on Signature™, ISX, and QSX15 engines.

Engines built prior to engine serial number 14010274 use non-grooved valve guides and small valve guide seals. These engines require the valve stem seal installer, Part Number 3163294, to be used when installing the valve guide seals.

Engine serial number (ESN) 14010274 and all engines built after, use a larger valve guide seal. These seals are designed to be installed by hand without the seal driver. The new seals snap into a groove machined on the valve guide. The seals introduced into engines built after ESN 14010274 with the grooved valve guides are
not compatible with engines built with the non-grooved valve guides and vice versa.

NOTE: The seals that mate with the grooved valve guides had two iterations.

1. Engines built from May 15, 2000 to the end of February, 2002 had separate intake and exhaust valve guide seals which were color coded. Intake valve guide seals had a brass-colored garter spring and three raised dots molded into the rubber; the exhaust valve guide seals had a silver-colored garter spring and
   no raised dots.
2. Engines built after March, 2002 had only one valve guide seal for both intake and exhaust valve guides. These seals can be used on any engines built after ESN 14010274.

WARNING  Do not remove the pressure cap from a hot engine. Wait until the coolant temperature is below 50°C [120°F] before removing the pressure cap. Heated coolant spray or steam can cause personal injury.

WARNING  Coolant is toxic. Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.

• Drain the coolant to below the cylinder head level.
  Refer to Procedure 008-018 in Section 8.
• Remove the rocker lever cover.
  Refer to Procedure 003-011 in Section 3.
• Disconnect the engine brake solenoid wiring harness.
  Refer to Procedure 020-015 in Section 20.
• Remove the injector for the cylinder to be repaired.
  Refer to Procedure 006-026 in Section 6.

Bar the engine over so the cylinder you are working on is at top-dead-center (TDC).
Refer to Procedure 003-004 in Section 3.

Repeat this step as needed for each cylinder.

WARNING  This component or assembly weighs greater than 23 kg [50 lb]. To reduce the possibility of serious personal injury, be sure to have assistance or use appropriate lifting equipment to lift this component or assembly.

• Remove the cylinder head and set it on a bench or table.
  Refer to Procedure 002-004 in Section 2.

WARNING  Valve springs are under tension and can act as projectiles if improperly released. To reduce the possibility of eye injury, wear safety glasses with side shields. Before releasing the valve spring tension, check that the collets are properly seated.

CAUTION  Do not use an impact tool for any part of this procedure. Doing so can damage the tool and/or the engine.

NOTE: This step can be preformed either on or off-engine.

Use valve spring compressor, Part Number 4919358, to compress the valve springs.

Remove the spring retainer collets.

Position the replacer screw (1) in the injector hole with the threaded end pointing up.

Secure the replacer screw (1) in the injector hole with the injector clamp and capscrew.

Tighten the capscrew.

CAUTION  The side of the retainer plate with the larger diameter chamfers faces down to accommodate the valve springs. Failure to position the retainer plate properly can result in damage to the engine and/or tool.

Position the compressor plate (2) over the replacer screw (1) and onto the valve springs.

Install the washer (4) and forcing nut (3) on the replacer screw (1).

Tighten finger tight.

WARNING  Eye protection should be worn during this procedure. Springs are under tension and can act as a projectile if released, causing serious injury.

Turn the forcing nut (3)
clockwise until the valve springs start to compress.

CAUTION  Do not overtighten the forcing nut. Doing so can damage the tool and/or springs.

Continue turning the forcing nut (3)
clockwise until the valve collets can be removed with a magnetic tool.

Discard the valve collets.

WARNING  Wear eye protection during this procedure. Springs are under tension and can act as a projectile if released, causing serious injury.

Carefully turn the forcing nut (3)
counterclockwise until the tension is released from the valve springs.

Remove the forcing nut (3) and compressor plate (2) from the replacer screw (1).

Remove the replacer screw (1) by removing he injector hold down bolt and injector hold down clamp.

Remove the valve spring retainer.

Remove the valve spring.

Remove the valve spring guide.

Repeat the above steps for each cylinder as needed.

NOTE: It is
not necessary to remove the valve spring guides on cylinder heads that have the grooved style valve guides. Valve guides that do
not have the groove
must have the valve spring guides removed for use of the installation tool.

Use the valve guide seal remover, Part Number 3163293, to remove the valve guide seals.

Grooved Valve Guide Seals:

NOTE: The seals that mate with the grooved valve guides had two iterations.

1. Engines built from May 15, 2000 to the end of February, 2002 had separate intake and exhaust valve guide seals which were color coded. Intake valve guide seals had a brass-colored garter spring and three raised dots molded into the rubber; the exhaust valve guide seals had a silver-colored garter spring and
   no raised dots.
2. Engines built after March, 2002 had only one valve guide seal for both intake and exhaust valve guides. These seals can be used on any engines built after ESN 14010274.

Install the intake and exhaust valve guide seals by snapping the seal by hand into the groove on the valve guide.

Non-Grooved Valve Guide Seals:

NOTE: Make certain the valve spring guides are removed before installing the non-grooved valve guide seals.

Use an unmodified valve seal installer, Part Number 3163294, to install the valve guide seals. The seal installer
must make contact with the cylinder head when installed. This correctly locates the valve guide seal.

Install the valve spring retainer.

Install the valve spring.

Install the valve spring guide.

Repeat the above steps for each cylinder as needed.

WARNING  Valve springs are under tension and can act as projectiles if improperly released. To reduce the possibility of eye injury, wear safety glasses with side shields. Before releasing the valve spring tension, check that the collets are properly seated.

CAUTION  Do not use an impact tool for any part of this procedure. Doing so can damage the tool and/or the engine.

Use the four valve spring compressor, Part Number 4919358, to compress the valve springs.

Position the replacer screw (1) in the injector hole with the threaded end pointing up.

Secure the replacer screw (1) in the injector hole with the injector clamp and capscrew.

Tighten the capscrew.

CAUTION  The side of the retainer plate with the larger diameter chamfers faces down to accommodate the valve springs. Failure to position the retainer plate properly can result in damage to the engine and/or tool.

Position the compressor plate (2) over the replacer screw (1) and onto the valve springs.

Install the washer (4) and forcing nut (3) on the replacer screw (1).

Tighten the nut finger tight.

WARNING  Eye protection should be worn during this procedure. Springs are under tension and can act as a projectile if released, causing serious injury.

Turn the forcing nut (3)
clockwise until the valve springs start to compress.

CAUTION  Do not overtighten the forcing nut. Doing so can damage the tool and/or springs.

Continue turning the forcing nut (3)
clockwise until the valve collets can be installed.

Always use new collets when rebuilding the cylinder head.

Install the new valve spring retainer collets.

Inspect the collets for proper seating and installation.

WARNING  Eye protection should be worn during this procedure. Springs are under tension and can act as a projectile if released, causing serious injury.

Carefully turn the forcing nut (3)
counterclockwise until the tension is released from the valve springs.

Remove the forcing nut (3) and compressor plate (2) from the replacer screw (1).

Remove the replacer screw (1) by removing the injector hold down bolt and injector hold down clamp.

Repeat the above steps for each cylinder as needed.

WARNING  Coolant is toxic. Keep away from children and pets. If not reused, dispose of in accordance with local environmental regulations.

• Install the injectors.
  Refer to Procedure 006-026 in Section 6.
• Connect the engine brake solenoid wiring harness.
  Refer to Procedure 020-015 in Section 20.
• Install the rocker lever cover.
  Refer to Procedure 003-011 in Section 3.
• Fill the cooling system.
  Refer to Procedure 008-018 in Section 8.
• If failure resulted in coolant, oil, excessive fuel or excessive black smoke entering the exhaust system, the aftertreatment system
  must be inspected.
  Refer to Procedure 014-013 in Section 14.
• Operate the engine and check for leaks and proper operation.

WARNING  This component or assembly weighs greater than 23 kg [50 lb]. To reduce the possibility of serious personal injury, be sure to have assistance or use appropriate lifting equipment to lift this component or assembly.

• Install the cylinder head.
  Refer to Procedure 002-004 in Section 2.
• If failure resulted in coolant, oil, excessive fuel or excessive black smoke entering the exhaust system, the aftertreatment system
  must be inspected.
  Refer to Procedure 014-013 in Section 14.
• Operate the engine and check for leaks and proper operation.