This procedure covers the removal and replacement of the oil pump on a 2021-2024 Ford F-150 with the 3.5L EcoBoost V6 engine, requiring front engine accessory removal and timing cover access.

Warnings

Tools required

Parts

• Oil pump assembly × 1 — Use OEM specification
• Timing cover gasket × 1 — Use OEM specification
• Oil pan gasket × 1 — Use OEM specification
• Oil pump pickup tube O-ring × 1 — Use OEM specification
• Oil filter × 1 — Motorcraft FL-500S or equivalent
• Oil drain plug crush washer × 1 — Use OEM specification
• Crankshaft front seal × 1 — Use OEM specification
• RTV silicone sealant × 1 — Motorcraft TA-357 or equivalent

Fluids

• Motorcraft 0W-20 Full Synthetic — 6 qt
• Motorcraft Orange Coolant — 2 qt

Preparation

1. Ensure engine is completely cool to the touch
2. Disconnect negative battery cable and wait 10 minutes
3. Raise vehicle on lift or secure on jack stands at all four corners
4. Remove engine splash shield and underbody panels
5. Drain engine oil completely and remove oil filter
6. Drain coolant from radiator and engine block
7. Install engine support fixture or hoist to support engine weight
8. Remove front wheels if additional access is needed
9. Document all electrical connector positions with photos before disconnecting

Procedure

1. 1

   Remove engine accessories and front covers
   Remove the serpentine belt, alternator, A/C compressor (do not disconnect refrigerant lines, support aside), power steering pump, and engine mount brackets. Label all electrical connectors during removal. Remove the crankshaft pulley using a holding tool to prevent rotation.
   Torque spec

   Mounting Bolts31 Nm (23 lb-ft)

   Electrical Connector Bolts8 Nm (6 lb-ft)
2. 2

   Support engine and remove front engine mount
   With engine support fixture in place and taking the weight, remove the passenger side engine mount completely. This provides necessary access to the timing cover. Verify engine is stable and properly supported before proceeding.
3. 3

   Remove timing cover
   Remove all timing cover bolts in reverse of tightening sequence. The 3.5L EcoBoost has multiple bolt lengths and types - keep organized. Carefully separate timing cover from engine block using plastic pry tools only. Do not damage aluminum mating surfaces.
   ⚠Aluminum timing cover is easily damaged. Never use metal pry bars on mating surfaces.
   Torque spec

   Cover Bolts19 Nm (14 lb-ft)
4. 4

   Verify and mark timing chain alignment
   Rotate crankshaft to Top Dead Center (TDC) cylinder #1. Verify all timing marks on camshaft sprockets and crankshaft sprocket align with their corresponding marks. Use paint pen to mark chain-to-sprocket relationship on both camshaft sprockets and crankshaft sprocket. Take multiple reference photos.
   ⚠️Failure to properly mark and maintain timing alignment will result in valve-to-piston contact and complete engine failure.
5. 5

   Remove oil pan
   Remove all oil pan bolts in a crisscross pattern starting from the outside and working inward. Carefully break the seal using a plastic gasket scraper and remove oil pan. Clean all old gasket material from pan and engine block mating surfaces with plastic scraper and brake cleaner.
   ⚠Do not pry on oil pan between mating surfaces. Damage to sealing surface will cause oil leaks.
   Torque spec

   Oil Pan Bolts12 Nm (9 lb-ft)
6. 6

   Remove oil pump pickup tube
   Remove the oil pump pickup tube mounting bolts and carefully extract the pickup tube from the oil pump housing. Inspect pickup tube screen for debris or damage. Discard O-ring seal.
   Torque spec

   Oil Pump Pickup Tube12 Nm (9 lb-ft)
7. 7

   Remove oil pump assembly
   Remove all oil pump mounting bolts. The oil pump is driven by the crankshaft and will slide forward off the crankshaft snout. Carefully work the pump free, ensuring the inner rotor comes out with the pump assembly. Inspect crankshaft surface for scoring or damage.
   ℹ️The oil pump inner rotor is keyed to the crankshaft. Note orientation before removal.
   Torque spec

   Oil Pump Bolts12 Nm (9 lb-ft)
8. 8

   Clean all mating surfaces
   Thoroughly clean all gasket mating surfaces on the engine block, timing cover mounting surface, and oil pan rail using plastic scrapers and brake cleaner. Ensure no gasket material, RTV, or debris remains. Wipe surfaces clean with lint-free shop towels and allow to dry completely.
   ℹ️Any debris left on sealing surfaces will compromise gasket seal and cause leaks.
   Torque spec

   Gasket Surface Bolts23 Nm (17 lb-ft)
9. 9

   Install new oil pump
   Verify new oil pump rotates freely by hand. Lubricate the oil pump inner rotor and crankshaft snout with clean engine oil. Align the inner rotor with the crankshaft keyway and carefully slide the oil pump onto the crankshaft, ensuring proper engagement. Install oil pump bolts and torque in a crisscross pattern.
   ⚠Do not force oil pump onto crankshaft. Inner rotor must align with keyway smoothly.
   Torque spec

   Oil Pump Bolts12 Nm (9 lb-ft)
10. 10

    Install oil pump pickup tube
    Install new O-ring on oil pump pickup tube, lubricated with clean engine oil. Insert pickup tube into oil pump housing and install mounting bolts. Torque bolts to specification. Verify pickup tube is properly seated and positioned correctly in relation to eventual oil pan installation.
    Torque spec

    Oil Pump Pickup Tube12 Nm (9 lb-ft)
11. 11

    Install oil pan with new gasket
    Position new oil pan gasket on engine block. Apply small dabs of RTV sealant at front cover-to-block and rear main seal-to-block junctions. Position oil pan and install all bolts hand-tight. Torque oil pan bolts in a crisscross pattern from center outward to specification.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)

    Gasket Bolts23 Nm (17 lb-ft)
12. 12

    Verify timing alignment and install timing cover
    Re-verify all timing marks are still properly aligned with reference marks made earlier. Install new crankshaft front seal in timing cover. Apply thin bead of RTV to timing cover where specified in service manual. Position timing cover carefully over crankshaft and against engine block. Install timing cover bolts in proper sequence starting with 8mm bolts and torque to specification.
    ⚠Verify timing marks one final time before installing cover. This is your last opportunity to prevent timing-related engine damage.
    Torque spec

    Cover Bolts19 Nm (14 lb-ft)
13. 13

    Reinstall front engine components
    Reinstall crankshaft pulley and torque to specification. Reinstall engine mount, power steering pump, A/C compressor, alternator, and all brackets in reverse order of removal. Reconnect all electrical connectors per documentation photos. Install new serpentine belt and verify proper routing.
    Torque spec

    Mounting Bolts31 Nm (23 lb-ft)

    Electrical Connector Bolts8 Nm (6 lb-ft)
14. 14

    Refill fluids and perform final checks
    Install new oil drain plug with new crush washer and torque to specification. Install new oil filter. Refill engine with 6 quarts of Motorcraft 0W-20 full synthetic oil. Refill coolant system with Motorcraft Orange Coolant to proper level. Reinstall all underbody panels and splash shields. Reconnect negative battery cable.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)

Reassembly

1. Double-check that all electrical connectors are properly seated and locked
2. Verify serpentine belt routing is correct and belt is properly tensioned
3. Ensure all drain plugs and fill caps are properly installed and tightened
4. Verify no tools or shop towels were left in engine compartment
5. Check that engine support fixture has been removed before starting

Verification

• Start engine and verify oil pressure builds within 5 seconds on instrument cluster
• Listen for any unusual noises from front of engine during startup
• Allow engine to reach operating temperature and inspect for oil leaks at pan, timing cover, and pump areas
• Verify no coolant leaks at timing cover
• Check oil level on dipstick and adjust if necessary after engine reaches operating temperature
• Test drive vehicle and monitor oil pressure gauge under various loads and RPM ranges
• Perform final inspection after test drive for any new leaks or concerns

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