I'm trying to check the cambelt timing marks are properly aligned on a 
Daewoo Lanos 1.4 (8valve).  I was hoping this would be a straightforward 
job but it looks like the crankshaft pulley also needs to be removed to 
gain access to the bottom half of the cambelt cover and alignment mark. 
I've removed the road wheel & plastic splash cover for easier access but 
how do I stop the crank pulley from rotating when trying to undo the 
pulley bolt?  I'm not sure if the power steering pump will also have to 
be removed!

In article , Mark says...

> I'm trying to check the cambelt timing marks are properly aligned on a 
> Daewoo Lanos 1.4 (8valve).  I was hoping this would be a straightforward 
> job but it looks like the crankshaft pulley also needs to be removed to 
> gain access to the bottom half of the cambelt cover and alignment mark. 
> I've removed the road wheel & plastic splash cover for easier access but 
> how do I stop the crank pulley from rotating when trying to undo the 
> pulley bolt?  I'm not sure if the power steering pump will also have to 
> be removed! 
> 

Firstly, if you've not removed the belt, make your own marks with 
paint/tippex...it's far easier.

Secondly, stick the car in a high gear and chock the wheels.

-- 
Conor

-You wanted an argument? Oh I'm sorry, but this is abuse. You want room 
K5, just along the corridor. Stupid git.

"Mark"  wrote in message 
news:3hgjm5Fgvnp0U1@individual.net...

> I'm trying to check the cambelt timing marks are properly aligned on a 
> Daewoo Lanos 1.4 (8valve).  I was hoping this would be a straightforward 
> job but it looks like the crankshaft pulley also needs to be removed to 
> gain access to the bottom half of the cambelt cover and alignment mark. 
> I've removed the road wheel & plastic splash cover for easier access but 
> how do I stop the crank pulley from rotating when trying to undo the 
> pulley bolt?  I'm not sure if the power steering pump will also have to be 
> removed!
>


Yes you have to take off the bottom pulley, the pas pump can be put to one 
side without disconnecting hoses.

To undo the bolt with home tools it may be easiest to expose the ring gear 
and jam it with a large screwdriver while undoing in the normal direction.

mrcheerful

"Conor"  wrote in message

>> how do I stop the crank pulley from rotating when trying to undo the
>> pulley bolt?  I'm not sure if the power steering pump will also have 
>> to
>> be removed!
>>
> Firstly, if you've not removed the belt, make your own marks with
> paint/tippex...it's far easier.
>
> Secondly, stick the car in a high gear and chock the wheels.


Good idea, will do. Cheers.

"mrcheerful ."  wrote in message

>> how do I stop the crank pulley from rotating when trying to undo the 
>> pulley bolt?  I'm not sure if the power steering pump will also have 
>> to be removed!
>>
>
> Yes you have to take off the bottom pulley, the pas pump can be put to 
> one side without disconnecting hoses.
>
> To undo the bolt with home tools it may be easiest to expose the ring 
> gear and jam it with a large screwdriver while undoing in the normal 
> direction.


I can see the toothed crankshaft sensor ring which I might be able to 
jam. Alternatively, following on from Conor's suggestion of putting it 
in gear and chock the wheels. At the moment the one side is on axle 
stand with the wheel removed for easier access.  Would it still work by 
putting it in gear and having someone press the footbrake?  And just to 
make sure, is it still anti-clockwise to undo the pulley bolt if the 
normal rotation of the pulley is clockwise?

"Mark"  wrote in message 
news:3hgqbbFgp8q8U2@individual.net...

> "mrcheerful ."  wrote in message
>>> how do I stop the crank pulley from rotating when trying to undo the 
>>> pulley bolt?  I'm not sure if the power steering pump will also have to 
>>> be removed!
>>>
>>
>> Yes you have to take off the bottom pulley, the pas pump can be put to 
>> one side without disconnecting hoses.
>>
>> To undo the bolt with home tools it may be easiest to expose the ring 
>> gear and jam it with a large screwdriver while undoing in the normal 
>> direction.
>
> I can see the toothed crankshaft sensor ring which I might be able to jam. 
> Alternatively, following on from Conor's suggestion of putting it in gear 
> and chock the wheels. At the moment the one side is on axle stand with the 
> wheel removed for easier access.  Would it still work by putting it in 
> gear and having someone press the footbrake?  And just to make sure, is it 
> still anti-clockwise to undo the pulley bolt if the normal rotation of the 
> pulley is clockwise?
>


The sensor ring may not be substantial enough, I would use the starter ring 
teeth (well actually I would use an air wrench)  In gear with a foot on the 
brake is ok, anticlockwise is the way to turn.  Marking the pulleys is only 
useful if correct at present, you said you wanted to check for correctness. 
I have been caught out by inaccurate home made marks before, so only use the 
real ones and double check them.

mrcheerful

On Fri, 17 Jun 2005 21:31:28 +0100, "Mark" 
wrote:


>"mrcheerful ."  wrote in message
>>> how do I stop the crank pulley from rotating when trying to undo the 
>>> pulley bolt?  I'm not sure if the power steering pump will also have 
>>> to be removed!
>>>
>>
>> Yes you have to take off the bottom pulley, the pas pump can be put to 
>> one side without disconnecting hoses.
>>
>> To undo the bolt with home tools it may be easiest to expose the ring 
>> gear and jam it with a large screwdriver while undoing in the normal 
>> direction.
>
>I can see the toothed crankshaft sensor ring which I might be able to 
>jam. Alternatively, following on from Conor's suggestion of putting it 
>in gear and chock the wheels. At the moment the one side is on axle 
>stand with the wheel removed for easier access.  Would it still work by 
>putting it in gear and having someone press the footbrake?  And just to 
>make sure, is it still anti-clockwise to undo the pulley bolt if the 
>normal rotation of the pulley is clockwise? 


How much does a toothed ring ring cost when you break a tooth off?
How much does a ring gear cost when it spins on the flywheel or snaps
in half? Most FWD cars you have to take the wheel off to get to the
bolt and then that axle just turns unless you have someone to stand on
the brake.  Take the plugs out, set timing so valves are closed on
number 1, turn motor about 1/2 turn in direction to do up bolt, stuff
cylinder with rope and undo the bolt.  The rope locks the piston.

"mrcheerful ."  wrote in message

>>> Yes you have to take off the bottom pulley, the pas pump can be put 
>>> to one side without disconnecting hoses.
>>>
>>> To undo the bolt with home tools it may be easiest to expose the 
>>> ring gear and jam it with a large screwdriver while undoing in the 
>>> normal direction.


Jobs done and the marks line up perfect (although not sure whether to be 
happy or not about that!)  Didn't need to remove the pas pump or bottom 
cam cover as cog & alignment marks were clearly visible once the pulley 
was removed.

"Mark"  wrote in message 
news:3hj30pFh59ohU1@individual.net...

> "mrcheerful ."  wrote in message
>>>> Yes you have to take off the bottom pulley, the pas pump can be put to 
>>>> one side without disconnecting hoses.
>>>>
>>>> To undo the bolt with home tools it may be easiest to expose the ring 
>>>> gear and jam it with a large screwdriver while undoing in the normal 
>>>> direction.
>
> Jobs done and the marks line up perfect (although not sure whether to be 
> happy or not about that!)  Didn't need to remove the pas pump or bottom 
> cam cover as cog & alignment marks were clearly visible once the pulley 
> was removed.
>


why did you suspect that the cam timing might be wrong?

mrcheerful

"mrcheerful ."  wrote in message
news:EP1te.52506$G8.45218@text.news.blueyonder.co.uk...

>
> "Mark"  wrote in message
>> Jobs done and the marks line up perfect (although not sure whether to
>> be happy or not about that!)  Didn't need to remove the pas pump or
>> bottom cam cover as cog & alignment marks were clearly visible once
>> the pulley was removed.
>>
>
> why did you suspect that the cam timing might be wrong?


It was suffering from lack of power, especially on steep roads I had to
use plenty of throttle to maintain speed.   I think I've finally found
the problem to be a faulty O2 Lambda.

After a couple of hours googling O2 Lambda sensors,  I followed the
suggestions and unplugged the thing and it's made a big difference in
performance.  I can now take corners in 3rd gear and still have plenty
of pull whereas before I had to knock it down to 2nd and use plenty of
throttle to pull away.  It looks like the 02 sensor was not responding
fast enough with the correct voltage, so when I needed more power the
engine was running too lean and not enriching the fuel to compensate.  I
can kick myself for not doing this simple test first instead of arsing 
about under the car disconnecting pulleys and cables - But hey,
we live and learn!

While I price up a new O2, does anyone know if it can do harm by running
with it disconnected?  Although if it's running much better with it
disconnected I would think it was doing more harm leaving it connected!

In article ,
   Mark  wrote:

> how do I stop the crank pulley from rotating when trying to undo the 
> pulley bolt?


If there's room, whack the spanner with a large hammer. The engine has a
fair old mass to start turning, so a sharp enough impact will usually
loosen it. Or an impact driver, if you have one and it'll fit.

-- 
*The hardness of the butter is proportional to the softness of the bread *

    Dave Plowman        dave@davenoise.co.uk           London SW
                  To e-mail, change noise into sound.