Centinel System – Repair Manual – 002-026   Overhead Camshaft Bushings, Valve

Remove the valve camshaft. Refer to Procedure 002-024.

Inspect the amount of copper exposure on the camshaft bushing. If it extends more than 180 degrees around the bushing, the bushing must
be replaced.

Use service tool, Part Number 3164088, for valve camshaft bushing removal.

The hydraulic camshaft bushing tool kit, Part Number 3823621, consists of:

NOTE: 

• For inner camshaft bushing removal, follow Steps 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10.
• For rear camshaft bushing removal, follow Steps 1, 2, 3, 4, 5, 6,
  11, 12, and 13.
• For front camshaft bushing removal, follow Steps 1, 2, 3, 4, 5, 6, 14, 15, and 16.

Step 1

CAUTION  Make sure to select the proper-size centering guides. This kit contains different-size centering guides for journals both with and without bushings installed. Selection of incorrect centering guides can result in damage to the journal and/or guides.

Install the centering guides in two of the camshaft bore ends.

NOTE: The centering guide can be installed in any of the holes, but keeping the wider distance is preferred.

Step 2

Install the puller shaft through both of the installed centering guides.

Step 3

Position the receiver spacer on the puller shaft with the open end facing the cylinder head.

NOTE: A receiver spacer has not been included in the valve camshaft bushing replacer kit, Part Number 3164088. Use receiver spacer, Part Number 3824864, or an appropriate-size spacer from another kit.

Step 4

Slide the center hole ram onto the puller shaft until it touches the receiver spacer.

Step 5

Install the stop collar in the groove of the puller shaft closest to the center hole ram.

Step 6

CAUTION  Make sure to install the proper-size bushing driver. Selection of incorrect bushing driver can result in damage to the camshaft bushing, journal cylinder head bore, and tool equipment.

Position the bushing driver on the puller shaft next to the bushing that is being removed.

Slide the bushing driver into the camshaft bushing until it stops against the flange of the bushing driver.

Step 7 (for inner bushings only)

Install the stop collar into the groove on the puller shaft closest to the end of the bushing driver.

Step 8 (for inner bushings only)

WARNING  Keep hands clear of the journal area when operating the pedal of the air/hydraulic pump. Serious injury can result if hands are caught between journal and bushing area when operating the air/hydraulic pump pedal.

Push down on the PRESS side of the air/hydraulic pump pedal and hold until the cam bushing is out of the bore.

Step 9 (for inner bushings only)

Remove the camshaft bushing from the bushing driver.

Remove the bushing driver and stop collar from the puller shaft.

Step 10 (for inner bushings only)

Push down on the RELEASE side of the air/hydraulic pump pedal. This will release the pressure.

Push the puller shaft forward until the stop collar is touching against the center hole ram.

Remove the service tool from the engine.

Step 11 (for rear bushing only)

Install the bushing driver onto the puller shaft behind the outer camshaft bushing.

Install the stop collar into the groove on the puller shaft closest to the end of the bushing driver.

Step 12 (for rear bushing only)

WARNING  Keep hands clear of the journal area when operating the pedal of the air/hydraulic pump. Serious injury can result if hands are caught between journal and bushing area when operating the air/hydraulic pump pedal.

Push down on the PRESS side of the air/hydraulic pump pedal and hold until the rear camshaft bushing and centering guide are out of the bore.

Step 13 (for rear bushing only)

Push down on the RELEASE side of the air/hydraulic pump pedal. This will release the pressure.

Push the puller shaft forward until the stop collar is touching against the center hole ram.

Remove the service tool from the engine.

Step 14 (for front bushing only)

Install the bushing driver on the puller shaft so that the larger end of the bushing driver is facing the front camshaft bushing.

Install the stop collar into the groove on the puller shaft closest to the end of the bushing driver.

Step 15 (for front bushing only)

WARNING  Keep hands clear of the journal area when operating the pedal of the air/hydraulic pump. Serious injury can result if hands are caught between journal and bushing area when operating the air/hydraulic pump pedal.

Push down on the PRESS side of the air/hydraulic pump pedal and hold until the camshaft bushing and centering guide are out of the bore.

Step 16 (for front bushing only)

Push down on the RELEASE side of the air/hydraulic pump pedal. This will release the pressure.

Push the puller shaft forward until the stop collar is touching against the center hole ram.

Remove the service tool from the engine.

Clean and inspect the camshaft bores in the cylinder head for reuse. Use an emery cloth to remove any burrs and sharp edges from the bore.

Use service tool, Part Number 3164088, for valve camshaft bushing removal.

The hydraulic camshaft bushing tool Kit, Part Number 3823621, consists of:

NOTE: 

• For inner camshaft bushing installation, follow Steps 1, 2, 5, 6, 7, 8, 9, 10, and 11.
• For rear camshaft bushing installation, follow Steps 1, 3, 5, 6, 7, 12, 13, 14, and 15.
• For front camshaft bushing installation, follow Steps 1, 4, 5, 6, 7, 16, 17, 18, and 19.

Step 1

CAUTION  Make sure to select the proper-size centering guides. This kit contains different-size centering guides for journals both with and without bushings installed. Selection of incorrect centering guides can result in damage to the journal and/or guides.

Install the centering guides into both camshaft bore ends.

Step 2 (for inner bushing only)

Slide the puller shaft through the centering guide and into the number 2 journal. Place a camshaft bushing, if desired, over the end of the puller shaft.

Move the puller shaft through the number 3 journal and do the same as above.

Continue through each inner journal until the puller shaft is completely through the opposite-end centering guide.

Step 3 (for rear bushing only)

Install the puller shaft through the two installed centering guides.

Step 4 (for front bushing only)

Slide the puller shaft through the centering guide and into the number 1 journal.

Place a camshaft bushing over the end of the puller shaft.

Continue to slide the puller shaft through the block and opposite-end centering guide.

Step 5

Position the receiver spacer on the puller shaft with the open end facing the cylinder head.

Step 6

Slide the center hole ram onto the puller shaft until it touches the receiver spacer.

Step 7

Install the stop collar in the groove of the puller shaft closest to the center hole ram.

Step 8 (for inner bushings only)

CAUTION  Make sure to install the proper-size bushing driver. Selection of incorrect bushing driver can result in damage to the camshaft bushing, journal, and tool equipment.

Position the proper bushing driver on the puller shaft next to the bushing being installed.

Slide the camshaft bushing over the bushing driver.

Step 9 (for inner bushings only)

CAUTION  It is very important that the oil ports on the camshaft bushings being installed be aligned with the oil ports in the journal. Misalignment of cam bushing oil port to journal oil port can result in damage to the engine.

Push the bushing driver over until the cam bushing just touches the cylinder head.

Install the stop collar into the groove on the puller shaft closest to the end of the bushing driver.

Rotate the camshaft bushing until the oil port is aligned with the oil port of the bore.

Step 10 (for inner bushings only)

WARNING  Keep hands clear of the journal area when operating the pedal of the air/hydraulic pump. Serious injury can result if hands are caught between journal and bushing area when operating the air/hydraulic pump pedal.

Push down on the PRESS side of the air/hydraulic pump pedal to pull the cam bushing into the cylinder head. As the camshaft bushing oil port comes close to the bore oil port, let up on the pedal.

Lightly tapping the PRESS side of the air/hydraulic pump pedal will provide control to stop the camshaft bushing in the desired position.

Step 11 (for inner bushings only)

Push down on the RELEASE side of the air/hydraulic pump pedal. This will release the pressure.

Push the puller shaft forward until the stop collar is touching against the center hole ram.

Remove the service tool from the engine.

Step 12 (for rear bushings only)

CAUTION  Make sure to install the proper-size bushing driver. Selection of incorrect bushing driver can result in damage to the cam bushing, journal, and tool equipment.

Place the camshaft bushing over the end of the puller shaft.

Position the bushing driver on the puller shaft and slide the camshaft bushing onto the bushing driver.

Step 13 (for rear bushings only)

CAUTION  It is very important that the oil ports on the camshaft bushings being installed be aligned with the oil ports in the journal. Misalignment of camshaft bushing oil port to journal oil port can result in damage to the engine.

Push the bushing driver over until the camshaft bushing just touches the cylinder head.

Install the stop collar into the groove on the puller shaft closest to the end of the bushing driver.

Rotate the camshaft bushing until the oil port is aligned with the oil port of the bore.

Step 14 (for rear bushings only)

WARNING  Keep hands clear of the journal area when operating the pedal of the air/hydraulic pump. Serious injury can result if hands are caught between journal and bushing area when operating the air/hydraulic pump pedal.

For front and rear bushing installation, move the centering guides to journals 2 and 6.

Push down on the PRESS side of the air/hydraulic pump pedal to pull the camshaft bushing into the cylinder head. As the camshaft bushing oil port comes close to the bore oil port, let up on the pedal.

Lightly tapping the PRESS side of the air/hydraulic pump pedal will provide control to stop the camshaft bushing in the desired position.

Step 15 (for rear bushings only)

Push down on the RELEASE side of the air/hydraulic pump pedal. This will release the pressure.

Push the puller shaft forward until the stop collar is touching against the center hole ram.

Remove the service tool from the engine.

Step 16 (for front bushings only)

CAUTION  Make sure to install the proper-size bushing driver. Selection of incorrect bushing driver can result in damage to the camshaft bushing, journal, and tool equipment.

Position the proper bushing driver on the puller shaft.

Slide the camshaft bushing over the bushing driver.

Step 17 (for front bushings only)

CAUTION  It is very important that the oil ports on the camshaft bushings being installed be aligned with the oil ports in the journal. Misalignment of camshaft bushing oil port to journal oil port can result in damage to the engine.

Push the bushing driver over until the camshaft bushing just touches the cylinder head.

Install the stop collar into the groove on the puller shaft closest to the end of the bushing driver.

Rotate the camshaft bushing until the oil port is aligned with the oil port of the bore.

Step 18 (for front bushings only)

WARNING  Keep hands clear of the journal area when operating the pedal of the air/hydraulic pump. Serious injury can result if hands are caught between journal and bushing area when operating the air/hydraulic pump pedal.

NOTE: The centering guide will be forced into the receiver spacer when the bushing and driver are pulled into the bore.

Push down on the PRESS side of the air/hydraulic pump pedal to pull the camshaft bushing into the cylinder head. As the camshaft bushing oil port comes close to the bore oil port, let up on the pedal.

Lightly tapping the PRESS side of the air/hydraulic pump pedal will provide control to stop the camshaft bushing in the desired position.

Step 19 (for front bushings only)

Push down on the RELEASE side of the air/hydraulic pump pedal. This will release the pressure.

Push the puller shaft forward until the stop collar is touching against the center hole ram.

Remove the service tool from the engine.

Install the valve camshaft. Refer to Procedure 002-024.

Operate the engine to normal operating temperature and check for leaks.