This procedure covers removal and replacement of the oil pump on a 2014-2019 Toyota Corolla 1.8L I4, requiring removal of the timing chain cover and oil pan.

Warnings

Tools required

Parts

• Oil pump assembly × 1 — 15100-37020 or equivalent OEM
• Oil pump O-ring × 1 — Use OEM specification
• Timing chain cover gasket × 1 — Use OEM specification
• Oil pan gasket × 1 — Use OEM specification
• Oil drain plug crush washer × 1 — 90430-12031
• Engine oil filter × 1 — 04152-YZZA6 or equivalent
• RTV silicone sealant (Toyota FIPG) × 1 — 08826-00080
• Crankshaft front oil seal × 1 — Use OEM specification
• Timing chain tensioner gasket × 1 — Use OEM specification

Fluids

• Toyota Genuine 0W-20 engine oil — 4.5 qt
• Toyota Super Long Life Coolant (Pink) — 2 qt

Preparation

1. Disconnect negative battery cable and wait 90 seconds for airbag system to discharge
2. Raise vehicle and secure on jack stands rated for vehicle weight
3. Remove engine under covers and splash shields
4. Drain engine oil completely and remove oil filter
5. Drain coolant from radiator and engine block into appropriate containers
6. Remove right front wheel for access to crankshaft pulley
7. Install engine support fixture across engine bay or attach hoist to engine lifting points
8. Remove accessory drive belt
9. Document timing chain alignment with photographs before disassembly

Procedure

1. 1

   Remove right engine mount
   Support engine weight with fixture or hoist. Remove right engine mount bracket bolts and the engine mount assembly. This provides clearance to remove timing cover.
   Torque spec

   Mounting Bolts26 Nm (19 lb-ft)
2. 2

   Remove crankshaft pulley
   Using crankshaft pulley holder tool to prevent rotation, remove crankshaft pulley center bolt (requires significant force). Remove pulley from crankshaft. Mark rotational position of crankshaft before removal.
3. 3

   Remove timing chain cover
   Remove all timing chain cover bolts in reverse of tightening sequence (outside to inside pattern). Note location of different length bolts. Carefully separate timing cover from engine block using plastic pry points. Do not damage mating surfaces.
   Torque spec

   Cover Bolts15 Nm (11 lb-ft)
4. 4

   Secure timing chain and verify alignment
   Verify engine is at TDC cylinder #1 compression stroke. Camshaft timing marks should align with cylinder head surface. Install timing chain holding tool to prevent chain from moving. Do not rotate crankshaft or camshafts from this point.
   ⚠If timing chain moves or jumps position during pump replacement, complete timing chain alignment procedure must be performed before starting engine.
5. 5

   Remove oil pan
   Remove all oil pan bolts in crisscross pattern from outside to center. Carefully separate oil pan from engine block. May require gentle tapping with rubber mallet. Clean all RTV residue from mating surfaces on both pan and block using plastic scraper.
   Torque spec

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

   Remove oil pump pickup tube
   Remove bolts securing oil pump pickup tube to oil pump body and engine block. Remove pickup tube and O-ring. Inspect pickup screen for debris or damage.
   Torque spec

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

   Remove oil pump assembly
   Remove oil pump mounting bolts. There are typically three bolts securing the pump to the engine block. Carefully pull oil pump straight out from engine block to avoid damaging crankshaft. Remove oil pump O-ring from pump or block groove.
   Torque spec

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

   Inspect and prepare mounting surfaces
   Thoroughly clean oil pump mounting surface on engine block. Remove all old gasket material and RTV sealant. Inspect crankshaft oil seal surface for grooves or damage. Clean timing chain cover mating surfaces completely. Surfaces must be clean, dry, and oil-free for proper sealing.
9. 9

   Install new oil pump
   Install new O-ring on oil pump, lightly lubricate with clean engine oil. Align oil pump with crankshaft and slide pump straight onto engine block. Ensure pump seats fully flush against block. Install and hand-tighten oil pump mounting bolts, then torque in crisscross pattern.
   Torque spec

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

    Install oil pump pickup tube
    Install new O-ring on pickup tube, lightly lubricate with clean engine oil. Position pickup tube into oil pump and install mounting bolts. Torque bolts to specification. Verify pickup tube is properly seated and aligned.
    Torque spec

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

    Install oil pan with new gasket
    Apply thin continuous bead of Toyota FIPG sealant to oil pan mating surface (or install new gasket per manufacturer instructions). Position oil pan carefully and install bolts hand-tight. Torque bolts in crisscross pattern from center outward. Allow RTV to cure per manufacturer instructions before filling with oil.
    ℹ️If using RTV sealant, do not start engine for minimum 2 hours to allow proper curing.
    Torque spec

    Oil Pan Bolts12 Nm (9 lb-ft)
12. 12

    Install timing chain cover
    Install new timing cover gasket or apply RTV per manufacturer specifications. Carefully position timing cover ensuring it does not disturb timing chain position. Install new crankshaft front oil seal if needed. Install all timing cover bolts hand-tight, then torque in proper sequence (typically center to outside) using 8mm bolt specification.
    Torque spec

    Cover Bolts15 Nm (11 lb-ft)
13. 13

    Reinstall crankshaft pulley
    Clean crankshaft nose and pulley bore. Install crankshaft pulley and new center bolt. Using holding tool, torque crankshaft pulley bolt to specification (refer to service manual for multi-step torque procedure typical on this component).
14. 14

    Reinstall engine mount and accessories
    Reinstall right engine mount assembly and bracket. Torque mounting bolts to specification. Remove engine support fixture. Reinstall accessory drive belt with proper routing and tension. Reinstall engine under covers and wheel.
    Torque spec

    Mounting Bolts26 Nm (19 lb-ft)
15. 15

    Refill fluids and perform initial start
    Install new oil filter. Install oil drain plug with new crush washer and torque to specification. Fill engine with 4.5 quarts Toyota 0W-20 oil. Refill coolant system. Reconnect battery. Before starting, manually rotate crankshaft two complete revolutions by hand to verify no interference. Start engine and immediately verify oil pressure warning light extinguishes. Check for leaks at oil pan, timing cover, and oil pump areas.
    ⚠️If oil pressure warning light does not extinguish within 3 seconds of starting, immediately shut off engine and investigate. Running engine without oil pressure will cause catastrophic damage.
    Torque spec

    Oil Drain Plug35 Nm (26 lb-ft)

Reassembly

1. Torque all fasteners in proper sequence and to exact specifications
2. Double-check timing chain alignment before final assembly
3. Use only specified Toyota FIPG sealant where required
4. Replace all one-time use gaskets and seals
5. Allow adequate cure time for RTV sealant before starting engine

Verification

• Start engine and verify oil pressure light extinguishes immediately
• Check for oil leaks at oil pan gasket, timing cover, and oil pump while engine idles
• Verify no abnormal engine noises indicating timing or pump issues
• Allow engine to reach operating temperature and recheck for leaks
• Check oil level after initial run and top off if necessary
• Test drive vehicle and monitor oil pressure gauge (if equipped) for normal readings
• Recheck all fluid levels after test drive and inspect for leaks with vehicle on lift

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