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1995-2002 Toyota 4Runner 3.4L Timing Belt/ Water Pump Replacement

As a rule of thumb, it is best practice to...

iFixit Library 1995-2002 Toyota 4Runner Difficult 2 - 5 hours Guide 77580

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Guide overview

Before you begin

As a rule of thumb, it is best practice to replace the timing belt and water pump together every 60k miles. Part 1 is only needed if you are looking to replace only the water pump. Since the timing cover is off and there is easy access, consider replacing both idlers, tensioner, accessory belts, thermostat and hose.Part 1 Part 2

Step 1

Repair step

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Begin by removing the fan cover which has four 10mm bolts .

Step 2

Repair step

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Remove the four 12mm nuts on the fan using a wrench .

Step 3

Repair step

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After removing the bolts on the fan and fan cover, take out the fan cover and fan .

Step 4

Repair step

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Remove the pulleys with the four 8mm bolts .

Step 5

Repair step

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Loosen up the idler pulley by getting underneath the car and removing the 12mm bolt at the bottom of the idler pulley .

Step 6

Repair step

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On the bottom of the idler pulley, loosen the 12mm bolt .

Step 7

Repair step

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Remove the 12mm bolt with a washer from the idler pulley .

Step 8

Repair step

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Remove the idler pulley .

Step 9

Repair step

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Take off the belt .

Step 10

Repair step

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Remove the nut that holds the pulley in place, which should be torqued down to 250 lbs .

Step 11

Repair step

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Using a 19mm wrench and a pipe, remove the nut and then remove the pulley .

Step 12

Repair step

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Take off the spark plug wires .

Step 13

Repair step

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Remove the ten 10mm bolts on the timing cover .

Step 14

Repair step

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Take off the timing cover .

Step 15

Repair step

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Loosen the bolts holding the water pump and remove the water pump .

Step 16

Repair step

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Line up the notches on the camshafts to set the timing before removing the belt .

Step 17

Repair step

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Remove the bottom cover by taking off the two 10mm bolts .

Step 18

Repair step

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Line up the camshafts by rotating the big pulley until the notches line up .

Step 19

Repair step

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Remove the old timing belt .

Step 20

Repair step

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Remove the old water pump and thermostat housing .

Step 21

Repair step

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Scrape off the old gasket from the water pump housing and block .