Question 1

How to service and repair the timing chain tensioner on Lincoln Town Car?

Accepted Answer

Before starting to service or repair the timing chain tensioner always position the vehicle in neutral on a hoist. First remove the engine front cover and proceed to detach the crankshaft sensor ring before disconnecting the 8 ignition coil electrical connectors. Then uninstall the bolts alongside the ignition coils. Clear away any well debris inside the 8 spark plugs by using compressed air during removal. Set the camshaft lobe to an upper position before inserting the valve spring compressor spacer as a protective shielding for valve stem seals. Start by marking each component for its original position to prevent engine harm before putting the valve spring compressor to work in removing the camshaft roller followers. Set the keyway of the crankshaft at 12 o'clock before removing all parts of the timing chain tensioning system including bolts, tensioners, tensioner arms alongside both timing chains and crankshaft sprocket. Uninstall the timing chain guides through the removal of their bolts and guides. Mount the camshaft position aligner while you detach the camshaft gear bolt. Workers should squeeze each timing chain tensioner plunger into a vise before they hold back the ratchet mechanism with a small screwdriver then lock it using a paper clip. The sealing bead of non-ratcheting tensioners should be checked for integrity before deciding on replacement. Place two hydraulic chain tensioner retaining clips onto the tensioner plungers before compression. The visible colored links should be marked for timing if they become invisible to the eye. You should install camshaft sprockets using new bolts which require a two-step tightening procedure starting at 40 Nm (30 lb-ft) and continuing with an additional 90 degrees rotation. Position the crankshaft using the crankshaft holding tool at top dead center (TDC) before you install the crankshaft sprocket whereas its flange faces forward. Tighten both timing chain guides to 10 Nm (89 lb-in) after proper positioning. Hold the RH camshaft sprocket at 11 o'clock marking as the position while positioning the LH sprocket at the 12 o'clock position. The colored links of the LH timing chain should point toward the timing mark at the crankshaft sprocket before installation of the chain followed by its tensioner arm and tensioner with 25 Nm (18 lb-ft) torque setting. The paper clip on the LH tensioner needs to be extracted. For the RH timing chain follow the same installation procedure with correct alignment before final tightening. Before inserting the valve spring compressor spacer check that the colored chain links match the sprocket dots then direct the camshaft to the up position before attachment. Apply clean engine oil to the camshaft roller followers before placing them correctly and installing the 8 spark plugs which you should tighten to 18 Nm (159 lb-in). Drill the 8 ignition coils into their positions by tightening all bolts to 6 Nm (53 lb-in). After that, reinstall ignition coil electrical connectors and place the crankshaft sensor ring on top of the engine front cover.

Question 2

How to service and repair the timing chain tensioner on Lincoln Navigator?

Accepted Answer

The service process for timing chain tensioner starts by taking off the engine front cover. Detach the crankshaft sensor ring from the crankshaft before positioning the keyway at the 12 o'clock mark while ensuring the No. 1 cylinder camshaft exhaust lobe is on the exhaust stroke. Begin by marking the parts in place to protect the engine before using a Valve Spring Compressor to remove the three camshaft roller followers from the right-hand cylinder head without letting the valve keepers drop. Execute this procedure on the left-hand cylinder head as well. The crankshaft needs rotation until it reaches the 6 o'clock position for examination of tensioner-sealing bead integrity before removing both left-hand and right-hand timing chain tensioners with their corresponding arms. First remove the right-hand timing chain together with the left-hand timing chain alongside the crankshaft sprocket before taking out the timing chain guides. A Cam Phaser Locking Tool allows for safe removal of right-hand and left-hand camshaft phaser and sprocket assemblies which need disposal of their bolts. Marshall the right-hand camshaft bearing cap and the successive bearing caps until their complete removal while paying close attention to clean and assess the oil metering groove along each component. All cylinder heads require removal of both camshafts together with all extra roller followers that remain on the camshafts. You should apply clean engine oil to the camshafts along with bearing caps before placing them in their normal positions and torquing the bolts to 10 Nm (89 lb-in) in a specific installation order. The installation requires positioning the camshaft phaser with sprockets while using new bolts initially being finger-tightened followed by two-stage tightening through use of the Cam Phaser Locking Tool. Install a retaining clip on the tensioner plunger while holding it in the vise compressed and position the crankshaft with its Crankshaft Holding Tool. The installation process requires marking needed timing links on chains before tightening the crankshaft sprocket and timing chain guides to 10 Nm (89 lb-in). Mount the timing chain on the sprocket marks before installing left-hand and right-hand tensioners and torquing them to 25 Nm (18 lb-ft). Verify timeout marks' alignment before reinstalling the crankshaft sensor ring and then use the Valve Spring Compressor to install each camshaft roller follower by first lubricating them. Last in line is the installation of the engine front cover.

OEM Lincoln Timing Chain Tensioner

45 Timing Chain Tensioners found

Lincoln Tensioner, Driver Side Part Number: F7LZ-6K254-BA

Lincoln Tensioner Guide Part Number: 6M8Z-6K255-A

Lincoln Tensioner Part Number: BL3Z-6L266-A

Lincoln Tensioner, Driver Side Part Number: XL1Z-6L266-AA

Lincoln Tensioner, Driver Side Part Number: F6AZ-6L266-CA

Lincoln Tensioner, Passenger Side Part Number: 7T4Z-6K254-AA

Lincoln Tensioner, Driver Side Part Number: 7T4Z-6K254-BA

Lincoln Tensioner, Passenger Side Part Number: F6AZ-6L266-DA

Lincoln Tensioner, Driver Side Part Number: FT4Z-6L266-A

Lincoln Tensioner, Driver Side Part Number: HL3Z-6L266-A

Lincoln Tensioner, Lower Part Number: 1L2Z-6L266-AA

Lincoln Tensioner, Driver Side Part Number: CJ5Z-6K254-A

Lincoln Tensioner Arm, Passenger Side Part Number: HL3Z-6K255-B

Lincoln Tensioner Guide Part Number: 1S7Z-6K255-AE

Lincoln Chain Guide Part Number: AT4Z-6B274-A

Lincoln Tensioner Arm Part Number: FT4Z-6K255-A

Lincoln Tensioner Arm Part Number: ML3Z-6K255-A

Lincoln Chain Tensioner Part Number: FT4Z-6K254-A

Lincoln Tensioner Part Number: YF1Z-6L266-BA

Lincoln Tensioner, Passenger Side Part Number: F7LZ-6K254-AA

Lincoln Timing Chain Tensioner

Lincoln Timing Chain Tensioner Parts and Q&A

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