Diesel Engines Timing belt - Revision history

HarryMann at 11:23, 23 July 2008

2008-07-23T11:23:14Z

← Older revision		Revision as of 11:23, 23 July 2008
Line 1:		Line 1:
	~~== How not to change a cambelt! ==~~

	~~'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....~~

	~~Thanks Jimmy, now we know to be careful!~~

	~~- [[Image:BrokenCamshaft_JX.jpg]] +~~
	~~- +~~
	'''Jimmyt:''' I used a straight piece of steel (all be it a piece of gauge plate that I ground on a surface grinder to be a precise fit in the camshaft slot ). I think the shape of the tool is important with the 'feet' that spread the load over a wider surface area which prevents the tool from lifting up and buggering up your camshaft. There was a lot of force going through my camshaft as the sprocket bolt was F tight so it needs to be securely locked. +
	~~- Lesson learnt, get the right tool for the job, and if your going to make the tool, make an exact copy of the tool as they are designed a certain way for a reason +~~
	~~- +~~
	~~'''Simon Baxter:''' I have the tools, and have done a shed load of belts without that problem! +~~
	~~- When people say they have the correct tools, then go on to say it's a bit of bar they had... I wince every time. +~~
	~~- Im sure theres loads of people out there that have done the same without problems but I'm a great believer in using the right tool for the job. +~~
	~~- Thing is, to do the job properly you have to shim the bar up with equal amounts of feeler guages either side of the setting bar to get the cam timing bob on. +~~
	~~- +~~
	'''Jimmyt:''' Well, its a lesson learnt for me, although in my defence I did post a question regarding this tool last week and the reply was to use a flat bit of steel. I used a decent lump of gauge plate (as opposed to mild steel) and did shim the tool with feeler gauges as per Bentley. As you say, this approach probably works most of the time but unfortunately didn't work for me, or I just messed up. +
	~~- +~~
	~~- +~~
	~~'''HarryMann:''' Sounds like it was really done up idiculously tight (or might it have been already cracked, hairline? +~~
	~~- +~~
	~~- JimmyT sent this link, which although for a TDi gives a good account of these tools and using them... '''great photo-article''', nothing missing, surely and a few what not to do's as well. +~~
	~~- [http://tdiclub.com/articles/A3-TimingBelt/ TDi timing belt change] +~~
	~~- +~~
	~~'''JimmyT's''' home-made camshaft sprocket holding tool... +~~
	~~- [[Image:Sprockettool.JPG]] +~~
	~~- [[Image:Sprockettool1.JPG]] +~~
	~~- +~~
	'''Diamond Hell:''' When you're fitting the new belt (and tensioner, right?) make sure that you've cracked the sprocket off the cam by belting it from behind with a punch, as directed (people miss this bit) - this means it will spin freely on the cam and make tensioning the belt a lot easier (Russel at Syncro-Nutz pointed that bit out to me - what a great tip). +
	~~- +~~
	- Of course the cheat's way of doing this is to cut the belt in half around it's run and lose the outer half. Once you've done that the new one can be slipped over and re-tensioned. Easy, cheating, but effective. +
	~~- +~~
	~~'''Louey:''' - can take just as long and you can risk damaging the new belt if you force it too much +~~
	~~- +~~
	'''andysimpson:''' - 9 times out of 10 with the all VW diesels the tensioner is the cause of breakage. It is supposed to be replaced when belt is which means the belt has to come off anyway, before tensioner can be replaced. +
	~~- +~~
	~~- +~~
	'''JimmyT:''' - Thats sound advice from Diamond Hell regarding doing stuff in the right order. The two manuals I've got tell you to lock the camshaft first with the plate then loosen camshaft sprocket bolt, I guess this works OK if the bolt is torqued up correctly, but its definitley worth cracking the nut loose before doing anything else.

HarryMann: /* How not to change a cambelt! */

2008-07-23T11:19:10Z

How not to change a cambelt!

← Older revision		Revision as of 11:19, 23 July 2008
Line 3:		Line 3:
	'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....		'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....

	Thanks Jimmy, now we know to be careful! +		Thanks Jimmy, now we know to be careful!
	+
	- [[Image:BrokenCamshaft_JX.jpg]] +		- [[Image:BrokenCamshaft_JX.jpg]] +
	- +		- +

HarryMann at 11:18, 23 July 2008

2008-07-23T11:18:39Z

← Older revision		Revision as of 11:18, 23 July 2008
Line 1:		Line 1:
	How not to change a cambelt!		== How not to change a cambelt! ==

	'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....		'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....

	- Thanks Jimmy, now we know to be careful! +		Thanks Jimmy, now we know to be careful! +
	- +		+
	- [[Image:BrokenCamshaft_JX.jpg]] +		- [[Image:BrokenCamshaft_JX.jpg]] +
	- +		- +

HarryMann at 11:17, 23 July 2008

2008-07-23T11:17:34Z

HarryMann at 11:16, 23 July 2008

2008-07-23T11:16:17Z

← Older revision	Revision as of 11:16, 23 July 2008
Line 1:	Line 1:
		How not to change a cambelt!

		- '''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....

		- Thanks Jimmy, now we know to be careful! +
		- +
		- [[Image:BrokenCamshaft_JX.jpg]] +
		- +
		- '''Jimmyt:''' I used a straight piece of steel (all be it a piece of gauge plate that I ground on a surface grinder to be a precise fit in the camshaft slot ). I think the shape of the tool is important with the 'feet' that spread the load over a wider surface area which prevents the tool from lifting up and buggering up your camshaft. There was a lot of force going through my camshaft as the sprocket bolt was F tight so it needs to be securely locked. +
		- Lesson learnt, get the right tool for the job, and if your going to make the tool, make an exact copy of the tool as they are designed a certain way for a reason +
		- +
		- '''Simon Baxter:''' I have the tools, and have done a shed load of belts without that problem! +
		- When people say they have the correct tools, then go on to say it's a bit of bar they had... I wince every time. +
		- Im sure theres loads of people out there that have done the same without problems but I'm a great believer in using the right tool for the job. +
		- Thing is, to do the job properly you have to shim the bar up with equal amounts of feeler guages either side of the setting bar to get the cam timing bob on. +
		- +
		- '''Jimmyt:''' Well, its a lesson learnt for me, although in my defence I did post a question regarding this tool last week and the reply was to use a flat bit of steel. I used a decent lump of gauge plate (as opposed to mild steel) and did shim the tool with feeler gauges as per Bentley. As you say, this approach probably works most of the time but unfortunately didn't work for me, or I just messed up. +
		- +
		- +
		- '''HarryMann:''' Sounds like it was really done up idiculously tight (or might it have been already cracked, hairline? +
		- +
		- JimmyT sent this link, which although for a TDi gives a good account of these tools and using them... '''great photo-article''', nothing missing, surely and a few what not to do's as well. +
		- [http://tdiclub.com/articles/A3-TimingBelt/ TDi timing belt change] +
		- +
		- '''JimmyT's''' home-made camshaft sprocket holding tool... +
		- [[Image:Sprockettool.JPG]] +
		- [[Image:Sprockettool1.JPG]] +
		- +
		- '''Diamond Hell:''' When you're fitting the new belt (and tensioner, right?) make sure that you've cracked the sprocket off the cam by belting it from behind with a punch, as directed (people miss this bit) - this means it will spin freely on the cam and make tensioning the belt a lot easier (Russel at Syncro-Nutz pointed that bit out to me - what a great tip). +
		- +
		- Of course the cheat's way of doing this is to cut the belt in half around it's run and lose the outer half. Once you've done that the new one can be slipped over and re-tensioned. Easy, cheating, but effective. +
		- +
		- '''Louey:''' - can take just as long and you can risk damaging the new belt if you force it too much +
		- +
		- '''andysimpson:''' - 9 times out of 10 with the all VW diesels the tensioner is the cause of breakage. It is supposed to be replaced when belt is which means the belt has to come off anyway, before tensioner can be replaced. +
		- +
		- +
		- '''JimmyT:''' - Thats sound advice from Diamond Hell regarding doing stuff in the right order. The two manuals I've got tell you to lock the camshaft first with the plate then loosen camshaft sprocket bolt, I guess this works OK if the bolt is torqued up correctly, but its definitley worth cracking the nut loose before doing anything else.

HarryMann at 11:15, 23 July 2008

2008-07-23T11:15:46Z

← Older revision		Revision as of 11:15, 23 July 2008
Line 1:		Line 1:
	~~How not to change a cambelt!~~

	~~- '''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....~~

	~~- Thanks Jimmy, now we know to be careful! +~~
	~~- +~~
	~~- [[Image:BrokenCamshaft_JX.jpg]] +~~
	~~- +~~
	- '''Jimmyt:''' I used a straight piece of steel (all be it a piece of gauge plate that I ground on a surface grinder to be a precise fit in the camshaft slot ). I think the shape of the tool is important with the 'feet' that spread the load over a wider surface area which prevents the tool from lifting up and buggering up your camshaft. There was a lot of force going through my camshaft as the sprocket bolt was F tight so it needs to be securely locked. +
	~~- Lesson learnt, get the right tool for the job, and if your going to make the tool, make an exact copy of the tool as they are designed a certain way for a reason +~~
	~~- +~~
	~~- '''Simon Baxter:''' I have the tools, and have done a shed load of belts without that problem! +~~
	~~- When people say they have the correct tools, then go on to say it's a bit of bar they had... I wince every time. +~~
	~~- Im sure theres loads of people out there that have done the same without problems but I'm a great believer in using the right tool for the job. +~~
	~~- Thing is, to do the job properly you have to shim the bar up with equal amounts of feeler guages either side of the setting bar to get the cam timing bob on. +~~
	~~- +~~
	- '''Jimmyt:''' Well, its a lesson learnt for me, although in my defence I did post a question regarding this tool last week and the reply was to use a flat bit of steel. I used a decent lump of gauge plate (as opposed to mild steel) and did shim the tool with feeler gauges as per Bentley. As you say, this approach probably works most of the time but unfortunately didn't work for me, or I just messed up. +
	~~- +~~
	~~- +~~
	~~- '''HarryMann:''' Sounds like it was really done up idiculously tight (or might it have been already cracked, hairline? +~~
	~~- +~~
	~~- JimmyT sent this link, which although for a TDi gives a good account of these tools and using them... '''great photo-article''', nothing missing, surely and a few what not to do's as well. +~~
	~~- [http://tdiclub.com/articles/A3-TimingBelt/ TDi timing belt change] +~~
	~~- +~~
	~~- '''JimmyT's''' home-made camshaft sprocket holding tool... +~~
	~~- [[Image:Sprockettool.JPG]] +~~
	~~- [[Image:Sprockettool1.JPG]] +~~
	~~- +~~
	- '''Diamond Hell:''' When you're fitting the new belt (and tensioner, right?) make sure that you've cracked the sprocket off the cam by belting it from behind with a punch, as directed (people miss this bit) - this means it will spin freely on the cam and make tensioning the belt a lot easier (Russel at Syncronutz pointed that bit out to me - what a great tip). +
	~~- +~~
	- Of course the cheat's way of doing this is to cut the belt in half around it's run and lose the outer half. Once you've done that the new one can be slipped over and re-tensioned. Easy, cheating, but effective. +
	~~- +~~
	~~- '''Louey:''' - can take just as long and you can risk damaging the new belt if you force it too much +~~
	~~- +~~
	- '''andysimpson:''' - 9 times out of 10 with the all VW diesels the tensioner is the cause of breakage. It is supposed to be replaced when belt is which means the belt has to come off anyway, before tensioner can be replaced. +
	~~- +~~
	~~- +~~
	- '''JimmyT:''' - Thats sound advice from Diamond Hell regarding doing stuff in the right order. The two manuals I've got tell you to lock the camshaft first with the plate then loosen camshaft sprocket bolt, I guess this works OK if the bolt is torqued up correctly, but its definitley worth cracking the nut loose before doing anything else.

HarryMann at 11:14, 23 July 2008

2008-07-23T11:14:24Z

← Older revision		Revision as of 11:14, 23 July 2008
Line 1:		Line 1:
	How not to change a cambelt!		How not to change a cambelt!

	- '''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....		- '''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....

Louey at 15:43, 24 May 2008

2008-05-24T15:43:22Z

@@ Line 1: / Line 1: @@
-  How to know if crankshaft is lined up correctly!
+  How not to change a cambelt!
-Before locking the crankshaft in place. Remove the plastic cap on the gearbox housing, its an inspection hole that allows you to view the  clutch plate and flywheel. The picture below shows you what it all looks like when the crankshaft is correctly aligned. You are looking to make sure the arrow on the gearbox housing (I've used a dab of paint to highlight mine in white) is lined up with a groove in the clutch plate.
+-	'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....
-[IMG]http://i44.photobucket.com/albums/f50/leonleelewis/tdcmark.jpg[/IMG]
+-	Thanks Jimmy, now we know to be careful!	+

Louey at 15:39, 24 May 2008

2008-05-24T15:39:32Z

New page

How to know if crankshaft is lined up correctly!

Before locking the crankshaft in place. Remove the plastic cap on the gearbox housing, its an inspection hole that allows you to view the clutch plate and flywheel. The picture below shows you what it all looks like when the crankshaft is correctly aligned. You are looking to make sure the arrow on the gearbox housing (I've used a dab of paint to highlight mine in white) is lined up with a groove in the clutch plate.

[IMG]http://i44.photobucket.com/albums/f50/leonleelewis/tdcmark.jpg[/IMG]

← Older revision		Revision as of 11:17, 23 July 2008
Line 1:		Line 1:
	How not to change a cambelt!		How not to change a cambelt!

	- '''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....		'''Jimmyt:''' I broke it!! .......fitting new cam belt and trying to undo the camshaft sprocket bolt, a big chunk broke off the end where my locking plate was fitted. Heres a pic of the damage....

	- Thanks Jimmy, now we know to be careful! +		- Thanks Jimmy, now we know to be careful! +
Line 7:		Line 7:
	- [[Image:BrokenCamshaft_JX.jpg]] +		- [[Image:BrokenCamshaft_JX.jpg]] +
	- +		- +
	- '''Jimmyt:''' I used a straight piece of steel (all be it a piece of gauge plate that I ground on a surface grinder to be a precise fit in the camshaft slot ). I think the shape of the tool is important with the 'feet' that spread the load over a wider surface area which prevents the tool from lifting up and buggering up your camshaft. There was a lot of force going through my camshaft as the sprocket bolt was F tight so it needs to be securely locked. +		'''Jimmyt:''' I used a straight piece of steel (all be it a piece of gauge plate that I ground on a surface grinder to be a precise fit in the camshaft slot ). I think the shape of the tool is important with the 'feet' that spread the load over a wider surface area which prevents the tool from lifting up and buggering up your camshaft. There was a lot of force going through my camshaft as the sprocket bolt was F tight so it needs to be securely locked. +
	- Lesson learnt, get the right tool for the job, and if your going to make the tool, make an exact copy of the tool as they are designed a certain way for a reason +		- Lesson learnt, get the right tool for the job, and if your going to make the tool, make an exact copy of the tool as they are designed a certain way for a reason +
	- +		- +
	- '''Simon Baxter:''' I have the tools, and have done a shed load of belts without that problem! +		'''Simon Baxter:''' I have the tools, and have done a shed load of belts without that problem! +
	- When people say they have the correct tools, then go on to say it's a bit of bar they had... I wince every time. +		- When people say they have the correct tools, then go on to say it's a bit of bar they had... I wince every time. +
	- Im sure theres loads of people out there that have done the same without problems but I'm a great believer in using the right tool for the job. +		- Im sure theres loads of people out there that have done the same without problems but I'm a great believer in using the right tool for the job. +
	- Thing is, to do the job properly you have to shim the bar up with equal amounts of feeler guages either side of the setting bar to get the cam timing bob on. +		- Thing is, to do the job properly you have to shim the bar up with equal amounts of feeler guages either side of the setting bar to get the cam timing bob on. +
	- +		- +
	- '''Jimmyt:''' Well, its a lesson learnt for me, although in my defence I did post a question regarding this tool last week and the reply was to use a flat bit of steel. I used a decent lump of gauge plate (as opposed to mild steel) and did shim the tool with feeler gauges as per Bentley. As you say, this approach probably works most of the time but unfortunately didn't work for me, or I just messed up. +		'''Jimmyt:''' Well, its a lesson learnt for me, although in my defence I did post a question regarding this tool last week and the reply was to use a flat bit of steel. I used a decent lump of gauge plate (as opposed to mild steel) and did shim the tool with feeler gauges as per Bentley. As you say, this approach probably works most of the time but unfortunately didn't work for me, or I just messed up. +
	- +		- +
	- +		- +
	- '''HarryMann:''' Sounds like it was really done up idiculously tight (or might it have been already cracked, hairline? +		'''HarryMann:''' Sounds like it was really done up idiculously tight (or might it have been already cracked, hairline? +
	- +		- +
	- JimmyT sent this link, which although for a TDi gives a good account of these tools and using them... '''great photo-article''', nothing missing, surely and a few what not to do's as well. +		- JimmyT sent this link, which although for a TDi gives a good account of these tools and using them... '''great photo-article''', nothing missing, surely and a few what not to do's as well. +
	- [http://tdiclub.com/articles/A3-TimingBelt/ TDi timing belt change] +		- [http://tdiclub.com/articles/A3-TimingBelt/ TDi timing belt change] +
	- +		- +
	- '''JimmyT's''' home-made camshaft sprocket holding tool... +		'''JimmyT's''' home-made camshaft sprocket holding tool... +
	- [[Image:Sprockettool.JPG]] +		- [[Image:Sprockettool.JPG]] +
	- [[Image:Sprockettool1.JPG]] +		- [[Image:Sprockettool1.JPG]] +
	- +		- +
	- '''Diamond Hell:''' When you're fitting the new belt (and tensioner, right?) make sure that you've cracked the sprocket off the cam by belting it from behind with a punch, as directed (people miss this bit) - this means it will spin freely on the cam and make tensioning the belt a lot easier (Russel at Syncro-Nutz pointed that bit out to me - what a great tip). +		'''Diamond Hell:''' When you're fitting the new belt (and tensioner, right?) make sure that you've cracked the sprocket off the cam by belting it from behind with a punch, as directed (people miss this bit) - this means it will spin freely on the cam and make tensioning the belt a lot easier (Russel at Syncro-Nutz pointed that bit out to me - what a great tip). +
	- +		- +
	- Of course the cheat's way of doing this is to cut the belt in half around it's run and lose the outer half. Once you've done that the new one can be slipped over and re-tensioned. Easy, cheating, but effective. +		- Of course the cheat's way of doing this is to cut the belt in half around it's run and lose the outer half. Once you've done that the new one can be slipped over and re-tensioned. Easy, cheating, but effective. +
	- +		- +
	- '''Louey:''' - can take just as long and you can risk damaging the new belt if you force it too much +		'''Louey:''' - can take just as long and you can risk damaging the new belt if you force it too much +
	- +		- +
	- '''andysimpson:''' - 9 times out of 10 with the all VW diesels the tensioner is the cause of breakage. It is supposed to be replaced when belt is which means the belt has to come off anyway, before tensioner can be replaced. +		'''andysimpson:''' - 9 times out of 10 with the all VW diesels the tensioner is the cause of breakage. It is supposed to be replaced when belt is which means the belt has to come off anyway, before tensioner can be replaced. +
	- +		- +
	- +		- +
	- '''JimmyT:''' - Thats sound advice from Diamond Hell regarding doing stuff in the right order. The two manuals I've got tell you to lock the camshaft first with the plate then loosen camshaft sprocket bolt, I guess this works OK if the bolt is torqued up correctly, but its definitley worth cracking the nut loose before doing anything else.		'''JimmyT:''' - Thats sound advice from Diamond Hell regarding doing stuff in the right order. The two manuals I've got tell you to lock the camshaft first with the plate then loosen camshaft sprocket bolt, I guess this works OK if the bolt is torqued up correctly, but its definitley worth cracking the nut loose before doing anything else.