Replace the water pump on a 2016-2024 Hyundai Tucson 2.5L I4 AWD engine, including coolant drain, timing cover access, and system refill.

Warnings

Tools required

Parts

• Water pump assembly × 1 — 25100-2S650 or equivalent OEM
• Water pump gasket/O-ring kit × 1 — Included with pump or separate
• Timing cover gasket × 1 — Use OEM specification if reusing cover
• Engine coolant × 10 — Hyundai/Kia Long Life Coolant (Green)
• Drive belt (if worn or contaminated) × 1 — 25212-2S000 or equivalent

Fluids

• Hyundai/Kia Long Life Coolant (Green) — 10 qt

Preparation

1. Ensure engine is completely cold (minimum 2 hours after last operation)
2. Disconnect negative battery terminal and wait 3 minutes
3. Raise vehicle on lift or jack stands and secure properly
4. Remove engine splash shields and undertray
5. Place large drain pan under radiator drain plug
6. Position engine support fixture or floor jack with wood block under oil pan to support engine weight

Procedure

1. 1

   Drain cooling system
   Open radiator drain plug at bottom of radiator and drain coolant into pan. Remove radiator cap to speed drainage. Once drained, remove lower radiator hose from radiator by loosening clamp and pulling hose off. Drain any remaining coolant from hoses.
2. 2

   Remove accessory drive belt
   Locate drive belt tensioner on right side of engine. Use socket on tensioner bolt to rotate tensioner counterclockwise and relieve belt tension. Slip belt off pulleys and remove. Inspect belt for coolant contamination or damage and replace if necessary.
3. 3

   Remove right engine mount
   Support engine with support fixture or floor jack under oil pan. Remove right engine mount upper bracket bolts (3 bolts to engine block). Remove mount lower through-bolt. Remove engine mount and bracket assembly to provide access to timing cover area.
4. 4

   Remove timing cover components
   Remove crankshaft pulley bolt using appropriate socket (24mm). Use harmonic balancer puller if pulley is tight. Remove timing cover bolts in sequence from outside to inside. Gently pry timing cover away from engine block. Note the location of all different length bolts for reassembly.
   ⚠Do not force timing cover removal. Gasket may be adhered; use plastic scraper to separate if needed.
5. 5

   Lock timing chain position
   Rotate crankshaft to Top Dead Center (TDC) for cylinder #1 by aligning timing marks on crankshaft and camshaft sprockets. Install timing pin tools into camshaft sprockets and crankshaft to lock timing position. Verify timing marks are perfectly aligned before proceeding.
   ⚠️Failure to lock timing properly will result in timing chain movement and potential valve-to-piston contact causing catastrophic engine damage.
6. 6

   Disconnect water pump hoses
   Locate coolant hoses attached to water pump housing. Loosen hose clamps and carefully disconnect hoses from pump inlet and outlet. Have rags ready to catch residual coolant. Label hoses if necessary for proper reassembly routing.
   Torque spec

   Hose Clamps3 Nm (2 lb-ft)
7. 7

   Remove water pump assembly
   Remove water pump mounting bolts (typically 6-8 bolts) securing pump to engine block. Note bolt locations and lengths. Carefully pull water pump away from engine block. If pump is stuck, gently tap pump housing with rubber mallet or use pry points if provided. Do not pry against sealing surfaces.
8. 8

   Clean mating surfaces
   Use plastic gasket scraper to carefully remove all old gasket material from engine block water pump mounting surface. Clean surface thoroughly with brake cleaner or degreaser and lint-free cloth. Inspect surface for damage, scoring, or warping. Surface must be completely clean and dry.
9. 9

   Install new water pump
   Install new gasket or O-ring on water pump (do not use additional sealant unless specified by manufacturer). Position water pump onto engine block, aligning bolt holes. Start all water pump bolts by hand to ensure proper alignment. Tighten water pump bolts to specification using criss-cross pattern starting from center bolts and working outward.
   ⚠Follow criss-cross tightening pattern strictly. Uneven tightening can warp pump housing and cause leaks.
   Torque spec

   Water Pump Bolts25 Nm (18 lb-ft)
10. 10

    Reconnect coolant hoses
    Reconnect coolant hoses to water pump inlet and outlet ports. Ensure hoses are fully seated onto pump fittings. Install hose clamps and tighten to specification. Position clamps away from potential contact points.
    Torque spec

    Hose Clamps3 Nm (2 lb-ft)
11. 11

    Reinstall timing cover
    Install new timing cover gasket if required. Position timing cover onto engine block, ensuring dowel pins are properly aligned. Install timing cover bolts finger-tight, then torque in sequence from inside to outside pattern. Verify timing pins are still in place and timing has not shifted.
12. 12

    Remove timing pins and reinstall components
    Carefully remove all timing pins from camshaft and crankshaft positions. Rotate crankshaft by hand two full revolutions and verify timing marks realign at TDC. Reinstall crankshaft pulley and torque pulley bolt to specification. Reinstall right engine mount and bracket assembly, torquing all bolts to specification.
13. 13

    Reinstall drive belt and lower components
    Route accessory drive belt around all pulleys according to belt routing diagram (typically on radiator support or under hood). Use tensioner to load belt onto final pulley. Reconnect lower radiator hose to radiator and secure with clamp. Reinstall engine splash shields and undertray.
14. 14

    Refill cooling system
    Close radiator drain plug. Fill cooling system with Hyundai/Kia Long Life Coolant (Green) mixed 50/50 with distilled water through radiator opening or overflow tank. Fill to proper level (approximately 10 quarts total system capacity). Use vacuum fill tool if available to eliminate air pockets.
15. 15

    Bleed cooling system and test
    With radiator cap off, start engine and allow to idle. Turn heater to maximum heat. As engine warms, coolant level will drop; continue adding coolant as needed. Once thermostat opens and coolant circulates, maintain proper level. Run engine until cooling fan cycles on. Check for leaks around water pump and all connections. Shut off engine, allow to cool, and top off coolant to proper level. Install radiator cap. Reconnect negative battery terminal.
    ⚠Monitor engine temperature closely during initial run. If temperature rises abnormally, shut down immediately and check for issues.

Reassembly

1. Torque all fasteners to specifications in the order listed
2. Ensure timing alignment is verified before final assembly
3. Double-check all coolant hose connections for proper seating and clamp tightness
4. Verify drive belt is properly routed and tensioned

Verification

• Check coolant level in overflow tank when engine is cold; should be between MIN and MAX marks
• Inspect water pump area and all hose connections for coolant leaks with engine running
• Verify engine reaches normal operating temperature and cooling fan cycles properly
• Test heater output to confirm proper coolant circulation
• After first drive cycle, recheck coolant level and inspect for leaks when cool

More procedures for this vehicle