Rhythmic tick from bottom of front cover
What is the right way to install the new front seal if I don't have the land rover special tool? Tap it in with what? and should I put it in the cover prior to install? Should I add grease or RTV? And while were talking about it what about the cover, pan and water pump gaskets? Follow rave or add additional gasket sealant?
Put the seal in before putting the timing cover on.
Tap it in with a piece of pvc pipe or block of wood, and use a small amount of clean oil or vaseline on the inner seal and crank snout, so the seal doesn't tear when you install it.
Pack the oil pump with vaseoline and/or assembly lube.
Put a thin bead of rtv silicone on both sides of the timing cover and waterpump gaskets.
A new o-ring on the oil pickup tube, lubed with oil or vaseoline.
3 bolts to replace the 3 studs on the bottom of the timing cover simplifies things.
Tap it in with a piece of pvc pipe or block of wood, and use a small amount of clean oil or vaseline on the inner seal and crank snout, so the seal doesn't tear when you install it.
Pack the oil pump with vaseoline and/or assembly lube.
Put a thin bead of rtv silicone on both sides of the timing cover and waterpump gaskets.
A new o-ring on the oil pickup tube, lubed with oil or vaseoline.
3 bolts to replace the 3 studs on the bottom of the timing cover simplifies things.
Do you only hear the tick near idle?
Before you do the work, see if the noise disappears above 1,000 RPM because low oil flow can cause an oil pump tick even with a new, working oil pump.
Thicker oil and/or higher idle RPM setting can "fix" such ticks without any real work, if so.
Before you do the work, see if the noise disappears above 1,000 RPM because low oil flow can cause an oil pump tick even with a new, working oil pump.
Thicker oil and/or higher idle RPM setting can "fix" such ticks without any real work, if so.
After fighting with the fan last weekend for 4 hours I bought a wrench set. Came off in 3 minutes. A few hours later I got the front cover off. Here is the oil pump gear and a video showing the play in the chain. I'm hopeful that this was the noise I was hearing. What else should I be looking at in here. I'm going to replace the pump gears and the chain.

https://www.instagram.com/p/B_cq7CSjq2m/

https://www.instagram.com/p/B_cq7CSjq2m/
I can't fathom any harm in an 800 rpm idle. To me, that's the same as driving slowly at 800 rpms. Heck, you are going to rev to 2,500 rpms for 30 straight minutes in Park just to break in a new camshaft, by design. Harm?!
My personal opinion is that 500 to 750 rpms for factory idle was too low for the oil pump and *that* was probably doing damage to Discos for decades.
I can't find any cracks or "odd" marks on the oil pump cover. I did clean it up with a little oil soaked 400 grit. What else should I inspect on the front cover. I'm surprised how much friction there is when turning the pump gears after lubing with engine builders lube and mounting in the housing (3 lb-ft on the screws with blue locktite)


The Rave shows how to put a feeler gage under the pump gears to measure clearance between them and the cover.
But wihout any scoring or grooves, it should be ok.
Hopefully you used a flat block to sand it, and didn't remove very much material, 400 grit removes aluminum easily.
But wihout any scoring or grooves, it should be ok.
Hopefully you used a flat block to sand it, and didn't remove very much material, 400 grit removes aluminum easily.
The Rave shows how to put a feeler gage under the pump gears to measure clearance between them and the cover.
But wihout any scoring or grooves, it should be ok.
Hopefully you used a flat block to sand it, and didn't remove very much material, 400 grit removes aluminum easily.
But wihout any scoring or grooves, it should be ok.
Hopefully you used a flat block to sand it, and didn't remove very much material, 400 grit removes aluminum easily.
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0304Disco
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Sep 13, 2012 10:22 AM



