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Oil Leak - front crank pulley


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Hi James, you should be able to replace this yourself. It's not a 5 minute job, as the rad has to come out, followed by the water pump housing and timing chest cover. The bolt in the end of the crank can be troublesome, it has a tab washer that will need to be disengaged from the bolt head, and it will be in tight. Also, the crank will be turning. Keep the spark plugs in. You may need lock it somehow - I'm sure someone will have a great idea for locking it - in the past I have put it in gear, and handbrake hard on, but I fear for the laygear. When you have the pulley out, examine the face carefully that spins within the seal - if it is worn you may need to replace it, or have it built up and re-machined. The seal is tapped out of the timing chest cover, and a new one tapped in. Don't tighten up the timing chest bolts until the pulley is back on the crank - that will help to centralise it. Let us know how you get on. Austin

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Hi James,

not sure how the TR6 engine goes together but as Austin says have a close look at the sleeve that the oil seal spins on - these do wear

Item #24 http://www.moss-europe.co.uk/shop-by-model/triumph/tr5-6/engine/engines-components/internal-engine-tr5-6.html

 

It may be cheaper to change this sleeve than to fit a speedi-sleeve - although they are very good.

 

Make sure you fit the seal the right way round

 

Roger

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You can swap the existing sleeve around to use an unworn part. I changedy seal a couple of months ago. Took about 3 hours. Remember to seal around the seal with some hymolar. It was not do this that cause my leak in the first place.

Tim

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In the Bentley instructions, they want you to slide the sleeve onto the crankshaft after the timing gear cover and seal is in place.

I think the idea is so that this technique will tilt the lips of the oil seal inward, rather than outward as they would be otherwise.

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I belive the sleeve can be fitted before or after the timing cover is in place, but the end is outwrads must be chosen accordingly.

One end has a chamfered edge, which must be out if on when the ciover is fitted

OR, at the back if fitted afterwards.

 

If done the other way, then the seal can be distorted - It happened to me!

John

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