Question about 2004 Lexus GX 470
When does the timing belt need changed
Posted by Anonymous on
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Posted on Jan 02, 2017
Perform steps 1-3 first to inspect whether you have the access doors or not before ordering filters!!!
Did this little project this evening. Figured I'd write it up.
5 Easy steps:
1. Remove glove box door by removing both screws at the bottom of the door.
2. First pop the the little flap with a fuse/relay out of the black plastic shield in the upper portion of the glove box opening. Next push it back behind the shield through the opening. Next remove the 3 screws holding the shield in place. Don't pull this shield out yet!! Read step 3 first.
3. Gently pull the shield out. Be careful because the glove box light is still plugged into this part. It is located on the right side of the shield. Once it is pulled out slightly, unplug the bulb from the harness and now you can fully remove the part.
4. Now you can see the vertical cover where the air filters reside. The cover is about 5 inches tall and about 1 inch wide. It has 2 tabs on the upper portion of the cover. Squeeze these tabs towards each other and pull the cover off.
5. The filters are now exposed. They are stacked on top of each other. Pull the first filter out then lift the next filter up and pull out. Put new filters back in and reverse the procedure.
2 Cabin air filters (Toyota PN 88568-60010 if you drop CDan a pm)
1 Phillips screw driver
No more than 15 minutes
STEP BY STEP PHOTO INSTRUCTIONS
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Posted on Mar 19, 2009
SOURCE: do I chanage water pump
Most Japanese designed engines have an internally mounted water pump, usually driven by the cambelt.
When we talk in terms of cam design, there are two types of engines: a) Interference and b) non-interference.
An interference egine means - if the cambelt were to break whilst engine is running, there will be major internal engine damage.
A non-interference engine means - if the cambelt were to break whilst engine is running, there will NOT be any serious internal damage to the engine.
Note: the GS300 engine (3.0L 6-cyl) is considered a Non-Interference engine.
So, one of the most critical compenents which MUST be changed, is the cambelt itself. Most manufacturers recommend changing this belt every 90,000 - 100,000km's (80,000 miles). If you have a non-interference engine, this period is not as critical, but should still be changed soon, to avoid the inconvenience of a breakdown whilst travelling.
The 2nd critical compenent is the Water Pump. The worst possible outcome of a failed waterpump, is your engine will suddenly drain of all coolant, resulting in serious overheating, causing serious internal damage to your engine.
Although there is no specified time to change the waterpump, a waterpump endures wear and tear like any component and lifespan can reduce rapidly beyond 100,000km's (80,000 mles). As the waterpump is situated next to the cambelt, it is a general rule to change out both cambelt and waterpump at the same time.
The majority of the cost to replace the cambelt, is in labor (ie opening the engine etc). If you choose to replace only one of these components, you will need to be prepared to pay for same procedure again in future, to replace the 2nd component.
Therefore, it can be more economical in the long term, to have both components changed together.
Hope this helps...
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Posted on May 30, 2011
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