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Author Topic: cylinder head removal  (Read 1311 times)

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peter5a

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cylinder head removal
« on: 24 June 2011, 17:16:42 »

Is it possible to remove the cylinder head without removing the steering pump mounting bracket and dipstick tube. I have a omega with a x25xe engine from the year 2000 with a fully functional airco system.  Does anyone have done this before. Many thanks for your reply. 
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alank46

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Re: cylinder head removal
« Reply #1 on: 24 June 2011, 18:43:30 »

Which cyl head, and which side is the steering wheel.
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peter5a

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Re: cylinder head removal
« Reply #2 on: 24 June 2011, 21:24:27 »

Thank you for reply. Standing in front of the omega its the right cylinder head and the steering wheel also on the right  (I am dutch). For this job I am folowing the haynes service manual.To remove the exhaust system from the cylinder head it was neccessary to remove the power steering.  But seeing the cylinder head I think that it might be possibible to remove the cylinder head without removing the power steering mounting bracket (to remove the bracket its neccassary to remove the airco compressor and therefore the refrigarant circuit has to be discharged by a air conditioning specialist and I hope thats not neccessary). 
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Andy H

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Re: cylinder head removal
« Reply #3 on: 24 June 2011, 21:38:11 »

When I changed the cylinder head gaskets on my 2.5 many years ago I followed the Haynes advice and had the aircon professionally degassed.

I took the heads to a machine shop to have them skimmed and was told that they could do the job by removing pump mounting bolts and holding the pump to one side. I am more inclined to believe the machine shop than Haynes  >:(
« Last Edit: 24 June 2011, 21:38:52 by andyh »
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peter5a

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Re: cylinder head removal
« Reply #4 on: 24 June 2011, 22:23:19 »

In a few days I shall remove the head and I shall follow the advice of your machine shop. Many thanks for your helpfull reply!!
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peter5a

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Re: cylinder head removal
« Reply #5 on: 24 June 2011, 23:36:25 »

I did for the first time the oil cooler and timing belt. I took the oil out before changing the oil cooler for a new one and put fresh oil and a new oil filter in the engine and saw that the level on the oil dipstick was allright. I started two times less then a minute (the engine did not work during that time) but made a mistake with the timing belt and the valves are bended and so I have to remove the cylinder heads to bring them to a machine shop. I wonder if  skimming of the cylinder heads is necessary. In Haynes is written that you have to take off the oil filter and oil cooling pipes before removing the cylinder heads so I took the oil for the second time out of the engine. I was completely surprised when I took off the oil filter that it was completely dry with no oil at all. I am wondering about the reason. May be the oil pump was pumping oil when I started two times the engine but the oil did not have had the time to reach the oil filter yet (and when when the engine is working the oil reaches the engine). I hope so (or the oil cooler pipes are damaged on the backside of the engine -as far as I can see they are undamagad- or may be I placed the oil filter not right). I am in doubt what the reason could be for the dry oil filter.      
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albitz

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Re: cylinder head removal
« Reply #6 on: 24 June 2011, 23:59:24 »

If you skim the heads you may encounter serious problems getting everything to go back together - for example, the inlet manifold probably wont fit back on. ;)
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Tick Tock

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Re: cylinder head removal
« Reply #7 on: 25 June 2011, 01:06:47 »

I can't comment on your 'dry' oil system, or bent valves, but can comment on removal of cylinder heads.

On a UK (right hand drive) Miggy, it is possible to remove the cylinder heads without disturbing the air-con pipework, so it can remain connected and pressurised.

I disconnected and moved my power steering pump into the area in front of the engine, but the hoses still remained connected, after the reservoir was emptied and removed. Then the bracket can be taken off.

Hope this is of help.
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Tick Tock

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Re: cylinder head removal
« Reply #8 on: 25 June 2011, 01:14:26 »



Here you can see the removed pump at the bottom of the pic, and the uninterupted air-con pipework.
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Darth Loo-knee

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Re: cylinder head removal
« Reply #9 on: 25 June 2011, 08:48:18 »

Quote
Is it possible to remove the cylinder head without removing the steering pump mounting bracket and dipstick tube. I have a omega with a x25xe engine from the year 2000 with a fully functional airco system.  Does anyone have done this before. Many thanks for your reply. 


You don't need to remove either the Air Con or Power Steering Pump to get the heads off.
You will need to remove the Power Steering Pulley Wheel & Reservoir Bracket so you can get the "Bast**d" bolt which holds the transfer pipe, engine lifting bracket & dipstick.

Hope that helps :y
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Andy H

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Re: cylinder head removal
« Reply #10 on: 25 June 2011, 12:07:31 »

Bent valves should not be a cause for having the heads skimmed. If you get the heads off and find corrosion on the mating surface then it would be a good idea.

Officially there isn't enough spare metal to skim any off but I had mine skimmed and the engine was still running sweetly 100 000 km later.
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peter5a

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Re: cylinder head removal
« Reply #11 on: 25 June 2011, 12:18:10 »

Thanks you for your reply. So the power steering pump must be removed in order to get the bolt off which holds the pipe, lifting bracket & dipstick and for the removal of the exhaust system. To remove the exhaust system of the other cylinder head the long metal coolant pipe (and alternator although in the picture the alternator is still on the engine) must be removed and its fixed by two bolts on the backside of the engine.  Haynes says unscrewing of the oil cooler bolts is neccessary allthough there is room for unscrewing the two bolts when the other cylinder head is taken off and Haynes did not mention that you have firstly taken off the right or left handed cylinder head.  Perhaps I have started to short to get enough oil pressure to the oil filter (the oil pump pressures oil to the oil filter and from that to the oil cooler. Before I started I had renewed the oil filter and oil cooler so the oil filter and cooler and pipes where dry because of the renewal).
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Andy H

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Re: cylinder head removal
« Reply #12 on: 25 June 2011, 14:55:18 »

Quote
Quote
Is it possible to remove the cylinder head without removing the steering pump mounting bracket and dipstick tube. I have a omega with a x25xe engine from the year 2000 with a fully functional airco system.  Does anyone have done this before. Many thanks for your reply. 


You don't need to remove either the Air Con or Power Steering Pump to get the heads off.
You will need to remove the Power Steering Pulley Wheel & Reservoir Bracket so you can get the "Bast**d" bolt which holds the transfer pipe, engine lifting bracket & dipstick.

Hope that helps :y
Is that really true? I didn't take my power steering pulley wheel off when I took the B*bolt out last year to change the thermostat. :-/

If you are removing the cam belt to remove the heads then I suppose that requires removal of the pulley though.
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Darth Loo-knee

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Re: cylinder head removal
« Reply #13 on: 25 June 2011, 16:34:28 »

Quote
Thanks you for your reply. So the power steering pump must be removed in order to get the bolt off which holds the pipe, lifting bracket & dipstick and for the removal of the exhaust system. To remove the exhaust system of the other cylinder head the long metal coolant pipe (and alternator although in the picture the alternator is still on the engine) must be removed and its fixed by two bolts on the backside of the engine.  Haynes says unscrewing of the oil cooler bolts is neccessary allthough there is room for unscrewing the two bolts when the other cylinder head is taken off and Haynes did not mention that you have firstly taken off the right or left handed cylinder head.  Perhaps I have started to short to get enough oil pressure to the oil filter (the oil pump pressures oil to the oil filter and from that to the oil cooler. Before I started I had renewed the oil filter and oil cooler so the oil filter and cooler and pipes where dry because of the renewal).


No. The Power Steering Pump does not need to be removed at all. You will need to remove the cambelt etc to remove the heads. So the Power Steering Pulley Wheel along with the Crankshaft Pulley & Water Pump Pulley need to be removed. This then allows you to get to remove the Cambelt Cover.
The Power Steering Reservoir Bracket, just the half that comes away when you undo the 6mm bolt needs to be removed because this allows better access to undo the "Barstool Bolt" that holds the Transfer Pipe, Dipstick and Engine Lifting Bracket.

I hope this makes sense too you  :y
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Darth Loo-knee

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Re: cylinder head removal
« Reply #14 on: 25 June 2011, 16:40:10 »

Quote
Quote
Quote
Is it possible to remove the cylinder head without removing the steering pump mounting bracket and dipstick tube. I have a omega with a x25xe engine from the year 2000 with a fully functional airco system.  Does anyone have done this before. Many thanks for your reply. 


You don't need to remove either the Air Con or Power Steering Pump to get the heads off.
You will need to remove the Power Steering Pulley Wheel & Reservoir Bracket so you can get the "Bast**d" bolt which holds the transfer pipe, engine lifting bracket & dipstick.

Hope that helps :y
Is that really true? I didn't take my power steering pulley wheel off when I took the B*bolt out last year to change the thermostat. :-/

If you are removing the cam belt to remove the heads then I suppose that requires removal of the pulley though.

Not sure if I am not explaining myself properly or you have read it wrong :-?
I was answering the question of, do I need to remove the Power Steering Pump Bracket to remove the Heads? The answer is No. The only to parts to do with the power steeringthat needd removing are Power Steering Pulley Wheel & Reservoir Bracket. The only reason the Reservoir Bracket needs removing is too allow access to the "Barstool Bolt" .. The only reason you need to remove the Power Steering Pulley Wheel is so you can remove the Cambelt Cover as the cambelt needs to be removed before removing the heads..

Hope that clears that up :y
« Last Edit: 25 June 2011, 16:42:41 by Loo-knee »
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