MM550 chain timing Help!

motocamp · 20th April 2010, 07:33

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.

motocamp · 20th April 2010, 07:36

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?

ex670c · 20th April 2010, 13:24

Jeep Thrills India XD3P Service Manual

motocamp · 20th April 2010, 13:41

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.

SPIKE ARRESTOR · 20th April 2010, 16:37

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?

Spike

motocamp · 20th April 2010, 22:35

I finally got the jeep running and have re timed the FIP , she's purring like a kitten now!

Jaggu · 21st April 2010, 12:57

So which one was the correct alignment mark?

20th April 2010, 07:33	#1
motocamp BHPian Join Date: Jul 2008 Location: pune Posts: 452 Thanked: 102 Times	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. Attached Thumbnails
	() Thanks

20th April 2010, 07:36	#2
motocamp BHPian Join Date: Jul 2008 Location: pune Posts: 452 Thanked: 102 Times	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?
	() Thanks

20th April 2010, 13:24	#3
ex670c Senior - BHPian Join Date: Nov 2004 Location: Chennai Posts: 2,470 Thanked: 1,939 Times View My Garage	XD3P Service Manual Jeep Thrills India XD3P Service Manual
	() Thanks

20th April 2010, 13:41	#4
motocamp BHPian Join Date: Jul 2008 Location: pune Posts: 452 Thanked: 102 Times	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.
	() Thanks

20th April 2010, 16:37	#5
SPIKE ARRESTOR Senior - BHPian Join Date: Nov 2009 Location: Germany Posts: 2,854 Thanked: 1,532 Times	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? Spike
	() Thanks

20th April 2010, 22:35	#6
motocamp BHPian Join Date: Jul 2008 Location: pune Posts: 452 Thanked: 102 Times	I finally got the jeep running and have re timed the FIP , she's purring like a kitten now!
	() Thanks

21st April 2010, 12:57	#7
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	So which one was the correct alignment mark?
	() Thanks