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Old 20th April 2010, 07:33   #1
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Default MM550 chain timing Help!

Hi I wanted to know the chain timing mark sequence.

Mine is one dot on crankshaft matched with dot on timing chain,painted line on chain matched to line on camshaft sprocket,painted dot and line matched to line on chain.

All the timing marks align together.

The reason i ask is the exhaust valves of all cylinders are slightly touching the piston.

How can the timing be right but the valves touch the piston!

Please help Arka, Behram , james...anyone!

The head gasket is the number three gasket.
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Old 20th April 2010, 07:36   #2
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If you look at the pump sprocket, it has both punched line and painted dot to denote timing mark but the chain has only one painted dot.

The one dot on the timing chain should be matched to the crankshaft dot or the pump sprocket dot?
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Old 20th April 2010, 13:24   #3
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Default XD3P Service Manual

Jeep Thrills India XD3P Service Manual
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Old 20th April 2010, 13:41   #4
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Thanks arka i will download it, that is allowed right?

The valve timing in respect to the crankshaft was 2 notches off, i have rectified it , should be ok now.
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Old 20th April 2010, 16:37   #5
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For a XD3P usually the white dot mark is only seen near the crank sprocket, rest two (CAM and FIP) sprockets have a white line/marking on them, why isn't it the same here?

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Old 20th April 2010, 22:35   #6
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I finally got the jeep running and have re timed the FIP , she's purring like a kitten now!
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Old 21st April 2010, 12:57   #7
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So which one was the correct alignment mark?
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