2004 Pilot timing belt DYI (for the 105,000 mile timing belt service)

This Guide will step you through the process of replacing the timing belt. Also recommended is replacing the water pump, auto tensioner and Front oil seals.


-Remove tire and place the Pilot on a jack stand.

-Remove the clips holding the fender liner and lower splash shield in place (x7) and fold them out of the way.

-Make sure the #1 piston is on top dead center using the marks on the crank pulley and lower timing belt cover (19mm in the crank pulley).

-Remove the Alternator-Compressor belt (14mm boxend) & Power Steering belt. (2-12mm and 1-12mm tensioner bolt)

-Loosen the crank pulley. If you have an impact wrench or a long breaker bar it makes it easier to remove the bolt. You will also need a special tool crankshaft pulley holder (50mm) (19mm and special tool).

-Remove the side engine mount bracket (5-14mm bolts).

-Remove the crankshaft pulley.

-Remove the oil dipstick & tube (10mm).

-Remove the front & rear 'upper covers' of the timing belt housing, moving the wire harness out of the way first (5-10mm bolts for each cover).

-Remove the lower cover (7-10mm bolts).

-Remove the engine mount bracket that is bolted to the block (3-14mm bolts).

-Remove the hydraulic tensioner (2-10mm bolts).

-Remove the tensioner pulley (you will reuse the inner sleave) (14mm bolt).

-Remove the idler pulley bolt (14mm bolt with thread locker on it) (I used Loctite 242 during the reinstall because I had it on the shelf).

-Remove the timing belt.

-Before installing a new timing belt, make sure the pulleys, belt guide plate, upper & lower covers are clean and check to see if the crank and cams have rotated (mine did not move).

-The install is the reverse order of removal (make sure you torque everything correctly!)

-The removal of the lock pin in the hydraulic tensioner gave me a little trouble so I used pliers.

-Once the crank pulley is back on, check the lower timing mark (and the cam marks) before the top covers are installed.

  1. Looking from above showing the accessory belts removed along with the motor mount.
    • Looking from above showing the accessory belts removed along with the motor mount.

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  2. Side view showing same including the lower cover
    • Side view showing same including the lower cover

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    • Crank pulley bolt removal (loosen the bolt before removing the motor mount!)

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    • Lower cover showing crank end and lower part of the dipstick tube (hydraulic tensioner can be seen behind VTEC solenoid) (crank timing mark can also be seen)

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    • Upper and lower covers removed (12mm power steering adjuster nut shown)

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    • Lower cover removed (rubber plug in the dipstick opening to prevent trash from falling in)

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    • Different angle to show both 14mm pulley bolts

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    • Top view showing timing belt, tensioner, and pulleys off

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    • Top view showing water pump. Also showing the belt, pulleys, and tensioner removed

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    • Bottom view showing the belt, pulleys, and tensioner removed

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    • Bolt (silver one closer to the front of the block) with thread lock

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    • Old parts and removed parts

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    • Old parts, lower cover, motor mount

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    • Covers, mount, dipstick (and new o-ring)

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    • Various tools used (bag shows the part number for the trim clips)

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This job is a great example where parts are cheap and labor is expensive. If you are able to do this yourself you can easily save 80% of your bill.

One other person completed this guide.

Collin Smith

Member since: 05/24/2012

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