Centinel System – Repair Manual – 001-017   Crankshaft Adapter

CAUTION  To reduce the possibility of engine damage, the removal of the lubrication oil pan is required to prevent debris collection in the oil pan.

• Remove the radiator, charge air cooler, and the hood if applicable. Refer to the OEM service manual.
• Remove the crankshaft pulley and vibration damper. Refer to Procedure 001-022 in Section 1.
• Remove the lubrication oil pan. Refer to Procedure 007-025 in Section 7.

NOTE: If the threaded hole adjacent to the dowel pin is selected, the dowel pin must be removed prior to drilling.

In most instances, this procedure is easiest to perform when staring with a threaded hole near the 12 o’clock position.

Use a 12.7-mm [1/2-in] drill bit, Part Number 4918535 or equivalent, to ream out the threaded hole so the 6.35-mm [1/4-in] bushing, Part Number 4918538 or equivalent, will insert easily.

Install the stop collar, Part Number 4918541 or equivalent, onto a 6.35-mm [1/4-in] drill bit, Part Number 4918533 or equivalent, at a depth of 60.3 mm [2.375 in].

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not drill holes completely through the crankshaft adapter or gear. Damage to the engine, crankshaft, and or tools can occur.

The use of a generous amount of cutting fluid will increase tool life and ease the drilling operation.

A maximum drill speed of 850 rpm is recommended.

Insert a 6.35-mm [1/4-in] drill bushing, Part Number 4918538 or equivalent, into the reamed hole.

Drill a 6.35-mm [1/4-in] hole to the preset depth.

Clean out the debris using low pressure air and a shop towel to cover the hole as necessary.

Install the stop collar, Part Number 4918542 or equivalent onto a 12.7-mm [1/2-in] drill bit, Part Number 4918535 or equivalent, at a depth of 54 mm [2.125 in].

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not drill holes completely through the crankshaft adapter or gear. Damage to the engine, crankshaft, and or tools can occur.

The use of a generous amount of cutting fluid will increase tool life and ease the drilling operation.

A maximum drill speed of 850 rpm is recommended.

Remove the 6.35-mm [1/4-in] drill bushing, Part Number 4918538 or equivalent. Using the previously drilled 6.35-mm [1/4-in] hole as a pilot, drill a 12.7-mm [1/2-in] hole to the preset depth.

Clean out the debris using low pressure air and a shop towel to cover the hole as necessary.

Install the drill guide adapter, Part Number 4918276, onto the crankshaft nose so the drill guide bushing labeled “A” is aligned with the previously drilled 21.7-mm [1/2-in] hole.

Install and tighten 2 existing damper capscrews through the drill guide adapter.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not drill holes completely through the crankshaft adapter or gear. Damage to the engine, crankshaft, and or tools can occur.

The use of a generous amount of cutting fluid will increase tool life and ease the drilling operation.

A maximum drill speed of 850 rpm is recommended.

Install the 19.05-mm [3/4-in] drill bushing, Part Number 4918540 or equivalent, into the drill guide bushing “A”.

Drill a 19.05-mm [3/4-in] hole using drill bit, Part Number 4918536 or equivalent, to a depth of the previous 21.7-mm [1/2-in] hole.

Remove the 19.05-mm [3/4-in] drill bit.

Clean out the debris. Use low pressure air and a shop towel to cover the hole as necessary.

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not drill holes completely through the crankshaft adapter or gear. Damage to the engine, crankshaft, and or tools can occur.

The use of a generous amount of cutting fluid will increase tool life and ease the drilling operation.

A right angle, clutched, 1/2-inch drive drill at a maximum drill speed of 300 rpm is recommended.

Drill a 25.4-mm [1-in] hole using drill bit, Part Number 4918537 or equivalent, to a depth of the previous 19.05-mm [3/4-in] hole.

Remove the 25.4-mm [1-in] drill bit.

Clean out the debris using low pressure air and a shop towel to cover the hole as necessary.

Remove the drill guide adapter from the crankshaft and rotate the drill guide adapter 180 degrees so the drill guide bushing labeled “B” is aligned with the previously drilled hole.

Install and tighten 2 existing damper capscrews through the drill guide adapter.

Install the stop collar, Part Number 4918543 or equivalent, onto a 19.05-mm [3/4-in] end mill, Part Number 4918532, at a depth of 111 mm [4.375-in].

WARNING  Wear appropriate eye and face protection when using compressed air. Flying debris and dirt can cause personal injury.

CAUTION  Do not drill holes completely through the crankshaft adapter or gear. Damage to the engine, crankshaft, and or tools can occur.

The use of a generous amount of cutting fluid will increase tool life and ease the drilling operation.

A right angle, clutched, 1/2-inch drive drill at a maximum drill speed of 300 rpm is recommended.

Bore a 19.05-mm [3/4-in] hole to the preset depth.

Remove the 19.05-mm [3/4-in] end mill, the 2 damper capscrews, and the drill guide adapter.

Clean out the debris using low pressure air and a shop towel to cover the hole as necessary.

Remove the front crankshaft seal. Refer to Procedure 001-024 in Section 1.

Remove the lower gear cover. Refer to Procedure 001-080 in Section 1.

Insert the wedge, Part Number 4918546, into the 19.05-mm [3/4-in] drilled hole.

Strike the wedge firmly with a hammer until the crankshaft adapter splits.

The crankshaft adapter will be easily removable by hand after splitting, however, a suitable puller can be used to facilitate the removal.

Inspect the crankshaft, tone wheel, and crankshaft gear for damage.

Inspect the machined surface for scratches or nicks.

Use a crocus cloth to remove the scratches or nicks. If scratches or nicks can be felt with a fingernail after the crankshaft has been polished with the crocus cloth, the crankshaft must be replaced.

Inspect the crankshaft gear and tone wheel for excessive wear or damage.

If any teeth on the crankshaft gear are missing, chipped, or pitted, the crankshaft gear must be replaced.

If any teeth on the tone wheel are missing, the tone wheel must be replaced.

WARNING  To reduce the possibility of personal injury, wear protective gloves when handling parts that have been heated.

NOTE: During the installation of the crankshaft adapter, the pin located on the backside of the crankshaft adapter must align with the slot on the front surface of the tone wheel.

Do not lubricate the crankshaft prior to installing the crankshaft adapter.

Heat the crankshaft adapter for 6 hours at 260°C [500°F] before attempting the installation.

NOTE: The crankshaft adapter must be installed within 15 seconds after being removed from the oven.

Install the crankshaft adapter. Use a twisting motion until the pin is aligned in the slot on the tone wheel.

Hold the crankshaft adapter against the tone wheel for approximately 30 seconds.

To check the installation, attempt to insert a 0.25-mm [0.010-in] feeler gauge between the crankshaft gear and the tone wheel at 4 locations approximately 90 degrees apart.

If the feeler gauge can be inserted, the tone wheel must be removed and replaced.

• Install the lubrication oil pan. Refer to Procedure 007-025 in Section 7.
• Install the lower gear cover. Refer to Procedure 001-080 in Section 1.
• Statically time the engine. Refer to Procedure 001-088 in Section 1.

NOTE: If the timing pin, Part Number 3163020, can not be inserted when the damper marking “Insert Pin” is aligned with the marking on the lower gear, the tone wheel or crankshaft adapter is not properly aligned with the crankshaft.

NOTE: It will be necessary to remove the lower gear cover, crankshaft seal, and vibration damper and check for missing dowel pins and or misalignment in the crankshaft adapter or tone wheel.

• Install the radiator, charge air cooler, and the hood, if applicable. Refer to the OEM service manual.