Question about Toyota Previa

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I'm in the middle of removing the head cylinder on a 95 toyota previa and I'm having trouble trying to get the chain out from the cam gear!is there a way of getting it off without having to take off the accessary drive shaft and crank pully?And another thing, to loosen the crank pully bolt is like any other bolt correct( which is to the left)?I've used an impact on it and it ended up breaking the impact socket. whats your advice! thank you for your time

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Dont remove the cam gear until you remove the crank shaft bolt.If you turn the crank with out the cam gear in place you may bend some valves.And damage the head,or a piston as well.
You can use a bar, and a socket on the crank bolt, if it clears everthing and rests on the frame work,then engauge the starter,this will loosen the crank bolt,but dont start the engine.Just a few hits on the key.Stand clear of the bar,!You may have to heat the bolt head a bit,as well.The bolt may have had locktite installed on the threads.Have the battery fully charged.

Posted on Sep 14, 2010

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How can I remove gear-to-gear timing cam?


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Feb 03, 2016 | 1998 Chevrolet S-10 Pickup

2 Answers

The compression is the same for all cylinders(150), but when I turned motor over, water came out of #1 cylinder only. Any idea?


Sounds like a head gasket leaking water in from the cooling system. Does it run OK? Any water in the oil on the dipstick and a mayonnaise type film on the oil filler cap?

Jan 21, 2016 | 1992 Toyota Previa

1 Answer

I need a picture of the timing marks for Jeep 4.0


Timing the Cam to the Crank

There are several ways to time the cam to the crank. Be sure to check the manual before you install the timing chain or belt.

  • Some timing sprockets are properly timed when the marks face each other.
  • On others, there must be a certain number of chain links between the marks.
  • Sometimes chains have colored links that must be aligned with the marks on the sprockets.
  • Some overhead cams have a mark on the cam gear that lines up with a mark on the cylinder head when the timing mark on the damper is at the TDC mark.
Align the timing marks for the camshaft and crankshaft sprockets before removing the timing belt or chain.

If the old parts are available, carefully compare the new gears or sprockets with the old ones. Check the keyway and timing marks just in case there might have been an error made in manufacturing. Sprockets are sometimes stamped backward. Its much better to find the problem during assembly, rather than waiting until problems show up after reassembly and reinstallation.

Maintaining Valve Timing

During a valve job, it is essential to keep the timing chain or belt in place to maintain correct valve timing. Position the number one cylinder at TDC. Some overhead cam engines use a single long chain for a cam drive. The chain can be wedged against its guides with a tapered block of wood.
the chain tensioner on some ohc engines must be wedged to keep the chain in position during cylinder head removal. courtesy of nissan motors.

Some engines have a lower and upper chain. These engines do not require special attention to wedging the chain. Be sure to look for hidden head bolts and check the repair manual before removing the OHC head.

Dec 07, 2012 | 1989 Jeep Cherokee

1 Answer

I have a 91 toyota previa and im trying to remove the rear differential..its a 2wd. I have unbolted the drive axle and the differential casing but its my understanding you have to pull lose the rear...


Most differentials are set up like this. There is a steel bar that is i the middle of the gears, this is held in with a bolt. remove the bolt. pull the bar out. Then push the axles in the center. There is a c clip to remove from the axle. They will come out easily. Pull the axles out. Once the axles are out the hog head as they call it, will come out. Just watch as the inner gears will come out also. And will have to be placed in the same spot. Kinda of push in and see. let me know

Aug 16, 2011 | 1991 Toyota Previa

1 Answer

It turns over but sound like there is no compresion


If you have the sound of no compression you either have a timing chain that has jumped time, or valve seats that have dropped out of the cylinder head. Check the timing, and, it it is correct, the head has to come off. The cyl head removal is an incredibly difficult undertaking in a Previa. I drop the whole engine out of the vehicle to work on them.

Aug 16, 2009 | 1995 Toyota Previa

1 Answer

Timing Chain


no. have to remove cam sprocket and crank sproket.

Jul 08, 2009 | 1994 Toyota Previa

2 Answers

Water loss through engine


yes cams are at front with the timing belt. not like motorcycles in the middle. I havent had many problems with them where I am. But a water loss in the engine is serious. If your sure the loss is internal then you have to tear down.

May 25, 2009 | 1997 Toyota Previa

2 Answers

Need cam timing specs 22r toyota truck


there will be two highlighted or dotted chain links for the camshaft and one for the crankshaft gear, position cam dot/TDC indicator in the 12-O clock position, the two dotted links should be on ether side of cam dot, turn crank dot to the 6-O clock position and line up highlighted link with dot on crank gear, if timing cover is on, then make sure cylinder 1 is at TDC when the two links are at 12-O clock.

Apr 08, 2009 | 1983 Toyota Pickup

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