Water pump replacement

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09-26-18, 12:02 PM

#16

bclexus

Lexus Test Driver

Join Date: Nov 2014

Location: Texas

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Quote:

Originally Posted by np20412

That's right. It's an INSPECTION only item at all 30k intervals. It is suggested for replacement at 100k per the service manual.

FACTORY RECOMMENDED Service for 100K Miles /120Months

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Check Installation Of Driver's Floor Mat
Reset Oil Maintenance Reminder, if Oil was Changed
Perform Road-Test on Vehicle
Rotate Tires
Inspect Visually, Brake Linings/Drums And Brake Pads/Discs

Inspect Wiper Blades
Inspect /Adjust All Fluid Levels
(Inspect sealed transmissions, transfer cases, and differentials for signs of leakage. If any leakage from a sealed component is suspected, it is recommended that you have the sealed component inspected by a Toyota dealer. Inspect power steering fluid (if equipped) and brake fluid level/condition. Inspect engine and inverter (if equipped) coolant level/condition/freezing point. Your dealer may recommend services (Dealer-Recommended Maintenance) based on inspection results.)
Replace Engine Oil And Oil Filter
(Reset "Maint Reqd" Light If Equipped after maintenance at every 5,000 miles.)
Replace Engine Coolant
Replace Cabin Air Filter (If Equipped)

Yes, I agree - Replace Engine Coolant at 100,000 miles, not at 60,000 miles. Initial replacement is at 120 months/100,000 miles. Replace every 60 months/50,000 miles thereafter.

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09-26-18, 12:50 PM

#17

Knucklebus

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Join Date: Jan 2018

Location: Kentucky

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Quote:

Originally Posted by er34

I don't disagree with your recommendations, but what you wrote may be confusing to some. There is a serpentine belt(accessory belt) and there is a timing belt(drive belt). There is no such thing as a serpentine timing belt.

The reason people do water pump at the same time as timing belt service is because you have to remove a ton of stuff to get to the timing belt - and water pump life is typically about the same as the timing belt and relatively cheap in parts cost. As you stated, the GS has a timing chain, so you can wait until signs of leak, and when it does, do yourself a favor and get the thermostat and tensioner done at the same time while you have the coolant out.

You might not call it a serpentine timing belt but any V motor with overhead cams, sometimes two per head, is most certainly a serpentine belt by design if not by name.

My 2003 Tundra 4.7 had a very serpentine timing belt.