N14 Base Engine Troubleshooting and Repair Manual – 001-010   Camshaft Bushings

Remove the accessory drive pulley. Refer to Procedure 009-004.

Remove the vibration damper. Refer to Procedure 001-052.

Remove the crankshaft pulley. Refer to Procedure 001-022.

Remove the gear cover. Refer to Procedure 001-031.

Remove the cam followers. Refer to Procedure 004-001.

Remove the camshaft. Refer to Procedure 001-008.

Use the camshaft bushing driver set, Part Number ST-1228, and driver, Part Number 3375861, to remove bushings number one through number six.

Use the camshaft bushing driver set, Part Number ST-1228, and puller, Part Number 3822782, to remove the number seven bushing.

Remove the number one bushing first and then the remaining six bushings in order from front to rear.

To remove bushings number one through number six insert the tool assembly through the camshaft bore until the driver is against the bushing.

Hit the slide hammer against the shaft assembly until the bushing is driven from the bore.

To remove the number seven bushing, insert the tool assembly through the bore until the pins of the puller assembly are engaged behind the bushing.

Hit the slide hammer against the T-handle until the bushing is removed from the bore.

Use a fine emery cloth to remove burrs, and clean the bushing bores.

Measure the cylinder block camshaft bore inside diameter.

Camshaft bores not meeting specifications can be repaired with sleeves. Refer to the Alternative Repair Manual, Bulletin 3379035. This is an out of chassis repair.

Install the camshaft bushings in the following order: numbers seven, six, five, four, three, two, and one.

Refer to the procedure outlined below.

CAUTION  The locating notch in the number seven bushing must be toward the rear of the engine and be located at the 6:00 o’clock position.

Install the tool assembly through the camshaft bore until the driver, Part Number 3375861, is in the cavity between the number six and the number seven bores.

Install the camshaft bushing guide, Part Number ST-1228-6, into the number five and the number six bores.

Install the bushing marked number seven onto the driver with the location notch to the rear of the engine and at the 6:00 o’clock position.

Push the bushing into the bore until the oil holes in the bushing are aligned with the drillings in the bore.

Use a 2.39 mm [0.094-inch] diameter rod to check the position and the location of the oil hole in the bushing and the cylinder block.

The rod must pass through the oil holes in the bushing and into the oil supply drillings in the cylinder block.

Install the number six through the number two bushings in the same manner as number seven was installed.

Use the bushing driver, Part Number 3375861, (1) to install bushing numbers one, two, four, and six.

Use the bushing driver, Part Number 3376412, (2) to install bushing numbers three and five.

Install the tool assembly through the camshaft bore until the driver is in the cavity between the bores where the bushing is to be installed.

Install the bushing guide into the camshaft bore next to the bore where the bushing is to be installed.

Install the bushing marked for that location onto the driver with the locating notch to the rear of the engine and at the 9:00 o’clock position.

Push the bushing into the bore until the oil holes in the bushing are aligned with the drillings in the bore.

Use a 2.39 mm [0.094-inch] diameter rod to check the position and the location of the oil hole in the bushing and the cylinder block.

The rod must pass through the oil holes in the bushing and into the oil supply drillings in the cylinder block.

NOTE: Camshaft bushing guide, Part Number ST-1228-6, is not used to install the number 1 bushing.

Install a new bushing onto the driver, Part Number 3375861, with the notch to the rear of the engine and at the 9:00 o’clock position when looking at it from the front of the engine.

Push the bushing into the bore until the oil holes in the bushing are aligned with the drillings in the bore.

Use a 2.39 mm [0.094-inch] diameter rod to check the position and the location of the oil holes in the bushing and the cylinder block.

The rod must pass through the oil holes in the bushing and into the oil supply drillings in the cylinder block.

Measure the camshaft bushings inside diameter (installed).

If the camshaft bushing installed diameter is not within specifications, remove the bushings and refer to the Alternative Repair Manual, Bulletin 3379035, for repair options.

Install the camshaft. Refer to Procedure 001-008.

Install the cam followers. Refer to Procedure 004-001.

Install the gear cover. Refer to Procedure 001-031.

Install the crankshaft pulley. Refer to Procedure 001-022.

Install the vibration damper. Refer to Procedure 001-052.

Install the accessory drive pulley. Refer to Procedure 009-004.

Operate the engine until it reaches a temperature of 82°C [180°F], and check for coolant or lubricating oil leaks.