This procedure involves removing the engine timing chain cover and related components to access and replace the oil pump on the 3.5L EcoBoost V6 engine.

Warnings

Tools required

Parts

• Oil pump assembly × 1 — Use OEM specification
• Oil pump pickup tube O-ring × 1 — Use OEM specification
• Timing cover gasket × 1 — Use OEM specification
• Oil pan gasket × 1 — Use OEM specification
• Harmonic balancer bolt × 1 — One-time use fastener
• Engine oil filter × 1 — FL-820S or equivalent
• Oil drain plug crush washer × 1 — Use OEM specification
• Timing chain tensioner gasket × 2 — Use OEM specification

Fluids

• Motorcraft 5W-20 Synthetic Blend engine oil — 6 qt
• Motorcraft Orange Coolant — 2 qt

Preparation

1. Ensure engine is completely cool
2. Disconnect negative battery cable
3. Raise and secure vehicle on jack stands
4. Remove engine cover and intake tubing
5. Install engine support fixture to support engine weight
6. Place drain pans under vehicle for oil and coolant
7. Remove front wheels and inner fender splash shields for access

Procedure

1. 1

   Drain fluids and remove accessories
   Drain engine oil and coolant. Remove the radiator hoses connected to timing cover, power steering pump (support aside without disconnecting lines), A/C compressor (support aside), and serpentine belt tensioner. Remove the coolant bypass tube from timing cover.
   Torque spec

   Oil Drain Plug35 Nm (26 lb-ft)
2. 2

   Remove front engine mount
   Support engine with fixture. Remove the passenger side engine mount and bracket to allow engine to be lowered for timing cover access. This provides necessary clearance between engine and firewall.
   Torque spec

   Mounting Bolts31 Nm (23 lb-ft)
3. 3

   Remove harmonic balancer
   Remove the single center bolt from harmonic balancer (discard bolt as it is one-time use). Use harmonic balancer puller to remove balancer from crankshaft. Do not use impact tools or pry against balancer as this will damage it.
4. 4

   Remove timing cover
   Remove all timing cover bolts in reverse of tightening sequence. There are multiple bolt lengths - mark locations for reassembly. Carefully separate timing cover from engine block using plastic pry tool. Do not damage mating surfaces.
   ⚠Note bolt locations as different length bolts are used in specific positions.
   Torque spec

   Cover Bolts19 Nm (14 lb-ft)
5. 5

   Mark and verify timing alignment
   Before removing any timing components, verify and photograph timing marks on crankshaft and both camshaft sprockets. All timing marks must be aligned with their respective indicators. Mark the timing chain direction of rotation with paint marker.
   ⚠️Failure to properly document timing alignment will result in engine damage upon startup.
6. 6

   Remove timing chain tensioners and guides
   Remove both primary timing chain tensioners by compressing and locking them, then removing mounting bolts. Remove timing chain guides. Keep all components organized for proper reassembly.
   Torque spec

   Gasket Bolts23 Nm (17 lb-ft)
7. 7

   Remove timing chains
   Remove the primary timing chain from crankshaft and camshaft sprockets. Do not rotate crankshaft or camshafts once chains are removed. Use timing alignment tools to lock camshafts and crankshaft in position.
   ⚠️Install camshaft and crankshaft locking tools immediately to prevent rotation and valve-to-piston contact.
8. 8

   Remove oil pan
   Remove all oil pan mounting bolts. Carefully separate oil pan from engine block using plastic pry tool at designated pry points. Clean all old gasket material from both oil pan and engine block mating surfaces with brake cleaner.
   Torque spec

   Oil Pan Bolts12 Nm (9 lb-ft)
9. 9

   Remove oil pump pickup tube
   Remove the two bolts securing oil pump pickup tube to oil pump and the support bracket bolt to main bearing cap. Remove pickup tube and discard O-ring seal.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
10. 10

    Remove and replace oil pump
    Remove the oil pump mounting bolts from front of engine block. Remove oil pump assembly by pulling straight out from engine block. Clean mounting surface thoroughly. Install new oil pump with new pickup tube O-ring, ensuring pump is fully seated against block before installing bolts. Torque oil pump bolts in crisscross pattern.
    ⚠Ensure oil pump drive chain is properly engaged with crankshaft before tightening bolts.
    Torque spec

    Oil Pump Bolts12 Nm (9 lb-ft)
11. 11

    Install oil pump pickup tube
    Install new O-ring on pickup tube. Install pickup tube to oil pump and support bracket. Torque bolts to specification in sequence: pump bolts first, then support bracket bolt.
    Torque spec

    Oil Pump Pickup Tube12 Nm (9 lb-ft)
12. 12

    Install oil pan
    Apply thin continuous bead of RTV silicone to oil pan mating surface (3mm bead). Install new oil pan gasket. Install oil pan within 10 minutes of RTV application. Install all oil pan bolts and torque in sequence from center outward.
    ℹ️Allow RTV to cure for at least 30 minutes before adding oil.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
13. 13

    Reinstall timing chains and components
    With camshafts and crankshaft still locked in timing position, install primary timing chain over crankshaft sprocket and both camshaft sprockets, ensuring all timing marks align exactly as photographed. Install timing chain guides and new tensioner gaskets. Install and release timing chain tensioners.
    Torque spec

    Gasket Bolts23 Nm (17 lb-ft)
14. 14

    Install timing cover
    Clean all old gasket material and RTV from timing cover and engine block mating surfaces. Apply 2.5mm bead of RTV silicone to engine block mating surface at split lines between oil pan and block. Install new timing cover gasket. Install timing cover and all bolts hand-tight first. Torque 8mm timing cover bolts to specification in proper sequence starting from center and working outward.
    ⚠Install timing cover within 10 minutes of RTV application to ensure proper seal.
    Torque spec

    Cover Bolts19 Nm (14 lb-ft)
15. 15

    Reinstall remaining components
    Install harmonic balancer onto crankshaft using new center bolt. Install engine mount and bracket. Reinstall all accessories including A/C compressor, power steering pump, belt tensioner, and serpentine belt. Reconnect coolant hoses and bypass tube. Install splash shields and wheels. Remove engine support fixture.
    Torque spec

    Mounting Bolts31 Nm (23 lb-ft)

Reassembly

1. Install new oil filter and refill engine with 6 quarts of Motorcraft 5W-20 synthetic blend oil
2. Refill cooling system with Motorcraft Orange coolant to proper level
3. Reconnect negative battery cable
4. Before starting engine, manually rotate crankshaft two complete revolutions and verify timing marks realign properly
5. Prime oil pump by cranking engine with fuel pump fuse removed until oil pressure gauge shows pressure

Verification

• Start engine and verify no oil leaks from oil pan, timing cover, or oil pump areas
• Verify oil pressure builds immediately on startup and maintains normal pressure at idle (40-70 psi)
• Listen for abnormal engine noises that could indicate timing or oil pump issues
• Allow engine to reach operating temperature and verify no coolant leaks from timing cover
• Check oil level after engine reaches operating temperature and adjust if necessary
• Test drive vehicle and verify normal engine operation under load

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