Lifters/Tappets - All

Complete replacement of all hydraulic roller lifters on the 5.0L Coyote V8 engine, requiring removal of camshafts and valve train components from both cylinder heads.

Warnings

Tools required

Parts

• Hydraulic roller lifters (complete set) × 32 — Motorcraft or OEM equivalent, 32 required
• Valve cover gaskets (left and right) × 2 — Use OEM specification
• Intake manifold gaskets × 1 — Use OEM specification
• Camshaft position sensor O-rings × 4 — Use OEM specification
• Engine oil and filter × 1 — Motorcraft 0W-20 Full Synthetic
• Timing cover gasket (if disturbed) × 1 — Use OEM specification
• Assembly lube (camshaft and lifter) × 1 — Motorcraft Engine Assembly Lube
• RTV silicone sealant (gray) × 1 — Motorcraft TA-31

Fluids

• Motorcraft 0W-20 Full Synthetic — 7.5 qt

Preparation

1. Park vehicle on level surface, apply parking brake, and chock rear wheels
2. Disconnect negative battery cable and wait 10 minutes for airbag system to discharge
3. Remove engine cover and air intake system completely
4. Drain engine oil and remove oil filter into appropriate container
5. Drain coolant from radiator and engine block into appropriate container
6. Remove serpentine belt and note routing for reinstallation
7. Disconnect and label all electrical connectors to valve covers, intake manifold, and VVT solenoids
8. Remove throttle body and disconnect all vacuum lines from intake manifold
9. Support engine with hoist or engine support bar from above
10. Mark and photograph all timing chain alignment marks before disassembly
11. Organize workspace with labeled containers for bolts, keeping left and right bank components separate

Procedure

1. 1

   Remove intake manifold assembly
   Disconnect fuel lines using proper quick-disconnect tools. Relieve fuel system pressure by removing fuel pump fuse and cranking engine briefly. Remove all intake manifold bolts in reverse of tightening sequence (outside to inside pattern). Lift intake manifold assembly straight up and off the engine. Inspect and clean all mating surfaces.
   ⚠️Fuel system is under high pressure. Relieve pressure completely before disconnecting fuel lines to prevent fire hazard and fuel spray injury.
   Torque spec

   Intake Manifold Bolts25 Nm (18 lb-ft)
2. 2

   Remove valve covers from both banks
   Disconnect ignition coil connectors and remove all eight ignition coils from spark plug tubes. Remove valve cover bolts in reverse sequence (outside to inside). Carefully lift valve covers to avoid damaging gasket surfaces. Remove and discard old gaskets. Clean all gasket surfaces with plastic scraper and solvent.
   Torque spec

   Cover Bolts20 Nm (15 lb-ft)
3. 3

   Remove accessory drive components and timing cover
   Remove crankshaft pulley bolt (requires engine holding tool). Remove harmonic balancer using appropriate puller. Remove all timing cover bolts and carefully pry cover away from engine block. Verify TDC position on cylinder #1 by aligning timing marks on crankshaft and camshaft sprockets.
   ⚠Document timing chain position with photos from multiple angles before proceeding. These photos are critical for correct reassembly.
   Torque spec

   Cover Bolts20 Nm (15 lb-ft)
4. 4

   Remove camshaft position sensors and VVT solenoids
   Remove all four camshaft position sensors (one per camshaft) and set aside with O-rings. Remove variable valve timing (VVT) solenoids from front of each camshaft. Keep sensors organized by bank and position.
   Torque spec

   Camshaft Position Sensor10 Nm (7 lb-ft)

   Sensor Bolts14 Nm (10 lb-ft)
5. 5

   Lock timing chains and remove camshaft sprockets
   Install timing chain locking tools to prevent chain movement. Mark each camshaft sprocket orientation with paint marker. Remove camshaft sprocket bolts while holding camshafts with holding tool. Carefully remove sprockets without disturbing timing chain position. Zip-tie or wire timing chains to prevent dropping into engine.
   ⚠️Timing chains must be secured and not allowed to fall into timing cover area. Dropped chains require extensive disassembly to retrieve and can damage other components.
6. 6

   Remove rocker arms and camshaft bearing caps
   Loosen rocker arm bolts gradually in multiple passes, working from outside to center to prevent binding. Remove all rocker arms and set aside in order. Mark each camshaft bearing cap with position and orientation using paint marker (they are NOT interchangeable). Loosen camshaft bearing cap bolts in reverse sequence (outside to center) in multiple passes. Remove bearing caps and carefully lift camshafts straight up from cylinder heads. Keep all four camshafts labeled by position.
   ⚠Bearing caps are machined as matched sets with the cylinder head. Installing caps in wrong positions or backwards will cause immediate bearing failure and camshaft seizure.
   Torque spec

   Rocker Arm Bolts30 Nm (22 lb-ft)

   Camshaft Bearing Cap Bolts9 Nm (7 lb-ft)
7. 7

   Remove all hydraulic lifters
   Using magnetic lifter removal tool, carefully extract all 32 lifters from their bores. Keep lifters organized by cylinder number and position (intake vs exhaust) if inspection is needed. Inspect each lifter bore for scoring, wear, or debris. Clean bores thoroughly with lint-free cloth and compressed air. Inspect camshaft lobes for wear, scoring, or pitting - replace camshafts if damage is present.
   ℹ️Lifters operate in precisely machined bores. Any debris or damage in bores must be addressed before installing new lifters.
8. 8

   Prepare and install new lifters
   Remove new lifters from packaging. Submerge each new lifter in fresh engine oil and manually pump plunger 10-15 times to pre-prime internal mechanism. Coat exterior of each lifter with assembly lube. Install lifters into their respective bores, ensuring they move freely and seat completely. Rotate each lifter to verify smooth movement in bore.
   ⚠Lifters MUST be pre-primed with oil before installation. Dry lifters will cause valvetrain noise and potential damage during initial startup.
9. 9

   Reinstall camshafts with assembly lube
   Liberally coat all camshaft journals and lobes with assembly lube. Coat camshaft bearing surfaces in cylinder head with assembly lube. Carefully lower each camshaft into position, ensuring lobes do not contact lifters during installation. Verify camshaft end play specification (0.001-0.007 inches) using dial indicator before installing bearing caps.
   ℹ️Assembly lube prevents dry startup wear. Use generous amounts on all friction surfaces.
10. 10

    Install camshaft bearing caps in sequence
    Install bearing caps in their exact original positions, verifying orientation marks. Hand-thread all bearing cap bolts first. Tighten bolts in three passes using center-outward sequence: first pass to 5 Nm, second pass to 10 Nm, final pass to specification. Rotate camshafts by hand after each pass to ensure free movement without binding.
    ⚠If camshafts bind at any point during tightening, STOP immediately. Loosen caps, verify correct positioning, and restart sequence.
    Torque spec

    Camshaft Bearing Cap Bolts9 Nm (7 lb-ft)
11. 11

    Reinstall rocker arms
    Position each rocker arm onto its corresponding valve stem and lifter. Verify each cam lobe is pointing away from rocker arm (on base circle) before tightening. Apply small amount of assembly lube to rocker arm pivot points. Tighten rocker arm bolts to specification, ensuring smooth rotation without binding.
    ⚠Rocker arms must only be tightened when camshaft lobe is on base circle (pointing away). Tightening on lobe nose will bend valves or break components.
    Torque spec

    Rocker Arm Bolts30 Nm (22 lb-ft)
12. 12

    Reinstall timing components and verify alignment
    Reinstall camshaft sprockets with timing marks aligned to specifications. Install and torque sprocket bolts while holding camshafts. Remove timing chain locking tools. Manually rotate crankshaft two complete revolutions clockwise and verify all timing marks realign perfectly at TDC cylinder #1. Repeat verification three times to ensure correct timing.
    ⚠️Timing mark alignment must be PERFECT. Even one tooth off will cause engine damage. If marks do not align after rotation, disassemble and correct before proceeding.
13. 13

    Reinstall camshaft sensors and VVT solenoids
    Install new O-rings on camshaft position sensors and VVT solenoids (lubricate with clean oil). Install sensors and solenoids to their original positions. Tighten sensor bolts to specification.
    Torque spec

    Camshaft Position Sensor10 Nm (7 lb-ft)

    Sensor Bolts14 Nm (10 lb-ft)
14. 14

    Reinstall timing cover and accessory components
    Clean all timing cover mating surfaces. Apply thin bead of RTV sealant to block and front cover sealing surfaces as per factory specifications. Install new timing cover gasket. Install timing cover bolts and tighten to specification in crisscross pattern. Reinstall harmonic balancer and crankshaft pulley with new bolt to specification.
    Torque spec

    Cover Bolts20 Nm (15 lb-ft)
15. 15

    Reinstall valve covers and intake manifold
    Install new valve cover gaskets (do not use sealant unless specified). Install valve covers and tighten bolts in sequence (center outward) to specification. Install new intake manifold gaskets. Position intake manifold and tighten bolts in sequence (inside outward) to specification. Reinstall ignition coils and all electrical connections.
    Torque spec

    Cover Bolts20 Nm (15 lb-ft)

    Intake Manifold Bolts25 Nm (18 lb-ft)

Reassembly

1. Reconnect all vacuum lines, fuel lines, and electrical connectors using reference photos
2. Install new oil filter and refill engine with 7.5 quarts of Motorcraft 0W-20 synthetic oil
3. Refill cooling system with proper coolant mixture and bleed air from system
4. Reinstall serpentine belt following routing diagram
5. Reinstall air intake system and engine cover
6. Reconnect negative battery cable
7. Double-check all fasteners are tightened and no tools remain in engine bay

Verification

• Perform initial startup: Start engine and immediately verify oil pressure on gauge (should register within 2-3 seconds)
• Listen for abnormal valvetrain noise during first 30 seconds - some lifter tick is normal initially but should quiet within 1-2 minutes as lifters pump up
• Allow engine to idle for 10 minutes, monitoring for oil leaks, coolant leaks, or unusual noises
• Check for diagnostic trouble codes using OBD-II scanner - address any camshaft position sensor or VVT codes immediately
• Perform test drive after engine reaches operating temperature, monitoring for proper power delivery and smooth operation
• After 20 miles of driving, re-check oil level and inspect for any leaks around valve covers, timing cover, and intake manifold
• Monitor engine operation for first 500 miles - some lifter noise during cold starts is normal but should disappear when warm
• Perform oil and filter change at 500 miles to remove assembly lube and any break-in debris

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