Question about 2004 Toyota RAV4

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Help the crank shaft pulley nut is very tight,dare not put on full force as it may be left or right threaded.

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To loosen go anti clockwise don't forget crank shaft nut or bolt is always extremely tight.

Posted on Sep 14, 2008


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660 has any body had problems with the sheaves nut keeps backing off I put red locker thread tight on it and it still backs off at a hundred and five and the torque wrenchand I have no cluethe cubic inch...

right hand nuts that keep undoing on a shaft that is rotating clockwise will always undo
There is a physics law that covers it
Trucks use left hand threads on the left hand side so that the wheels do not come loose
so how to overcome this problem
try using a nylock nut or a new spring washer with sharp edges that dig into the nut and the base
when tensioned drill a hole through the nut and tap in a roll pin
you can get roll pins less than 1/8 in diameter and that would prevent the nut from undoing
to remove the nut ,tap out the pin first
The real fix would be to get a shaft with a left hand thread made by an engineering shop, then the action would make the nut tighter

Nov 15, 2017 | Cars & Trucks

1 Answer

Rattling noise in lower Ginetta Ford V6 3700 engine block

check the condition of the harmonic balancer on the crank shaft. check the crank pulley nut is tight and the pulley is not moving on the crank shaft. Check for worn timing chains or out of adjustment chain tensioners.

Apr 20, 2014 | Cars & Trucks

1 Answer

Is the crank shaft pulley on a renault 1.5 megane left/ or right hand thread

They'd be right hand threads-regular threads-to loosen, turn counter clockwise. An air impact wrench is best for removing the crank bolt. Or a long breaker bar and socket on the bolt, if you can hold the crankshaft stable so it doesn't turn backward with pressure on the bolt. You can pull the starter off, and wedge a big screwdriver or prybar against the flywheel's ring gear teeth, then turn the bolt with the breaker bar.

Jul 13, 2012 | Renault Megane Cars & Trucks

2 Answers

Is the big nut holding the fan to the clutch right hand, (right to tighten,left to loosen)? 1993 navajo

You mean standard or reverse thread?
Usually crank nuts are reverse thread in relation to the direction of the pulley.

So if the pulley\engine spins clockwise then the nut is probably going to loosen by spinning it counterclockwise.

Afterall it would do no good to go down the road and have the rotation of the engine spin the nut off of the crank pulley eh?

Feb 03, 2012 | 1993 Mazda Navajo

2 Answers

How do you install the pully onto the power steering pump?

Find an all thread bolt that is about 3" long that will screw into the pump shaft. You will need a nut and a washer that fits the bolt. Put the nut and washer on the bolt,Set the pulley on the shaft and screw the bolt in the shaft as far as it will go hand tight, but at least 5 or 6 revolutions. you willneed two wrenches , one to hold the bolt and one to turn the nut. The pulley must be flush with the shaft when you are done

Nov 24, 2010 | 1996 Plymouth Voyager

2 Answers

I cant get the bolt loose to remove pulleys from the front of crank shaft.Ineed to replace crank shaft seal.

easy , you must learn to improvise ,use a nice knuckle bar ,preferably snap on then jam this in the suspension with the socket on the nut and turn starter motor .it will come undone with no problem.most important do not forget to put some locktite on thread when re fitting,also make sure you put some white paint marks on the pulleys to the bloc so you know where they time up do not paint teh belt because you WILL change it and paint teh milage on teh timing cover and date for anyone else to know when it was done last

Jan 18, 2010 | Plymouth Voyager Cars & Trucks

1 Answer

Crank shaft pulley

Should be a right hand thread . Only left hand threads I have come across are Honda's and some Mitsubishi's.
It will be very tight!
Hope this helps

Aug 01, 2009 | 1995 Isuzu Rodeo

1 Answer

Crank shaft bolt left or right hand thread on rav4

It's right hand thread, but very tight. One trick mechanics use, is to disable the igniton, and put a johnson bar on it, with it braced somewhere against a frame member, and crank the engine very briefly with the starter. The engine cranks clockwise so you must ready the bar against something in that direction. As you crank, the bolt resists in the counterclockwise direction and comes free. Sometimes makes a bit of noise, but it works like a charm.

Mar 11, 2009 | 1996 Toyota RAV4

1 Answer

Cant get the crankshaft pulley off

It's most likely right hand thread. You will have to use a large breaker bar to get enought leverage to remove this nut. Or you can use what ever you have and place a steel pipe on the end of it for extra leverage. If it doesn't budge, you may have to soak it in penetrating oil, and use an impact wrench. Make sure you remove the large washer under the nut "before" you remove pulley.

Nov 11, 2008 | 1997 Jeep Tj

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