SC300 Front Seal - Lower gear puller?
#1
SC300 Front Seal - Lower gear puller?
What is the best way to remove the lower timing belt gear from the front of the crankshaft so I can replace the front crankcase seal? Yes, I am replacing hoses, water pump, timing belt, etc. while I am in here. No, I wasn't planning on doing the cam shaft seals today.
Thanks in advance,
Wade
Thanks in advance,
Wade
#2
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Welcome to Club Lexus.
Usually, a tool such as this is used: http://www.sears.com/shc/s/p_10153_12605_00947626000P
You can "borrow" them for free by making a full purchase price, refundable deposit at any AutoZone (and maybe other chains). I suggest you read up here a bit. there are numerous threads regarding the ominous crank bolt which immediately precedes the pulley removal. Good luck.
Usually, a tool such as this is used: http://www.sears.com/shc/s/p_10153_12605_00947626000P
You can "borrow" them for free by making a full purchase price, refundable deposit at any AutoZone (and maybe other chains). I suggest you read up here a bit. there are numerous threads regarding the ominous crank bolt which immediately precedes the pulley removal. Good luck.
#3
Thank you. Do you have the bolt size and thread?
Thank you Good2Go! I own that tool and a couple of variations on it. Do you happen to know what bolts I need to pull the crankshaft gear? Other than the ~300 ft/lb of torque on the crankshaft nut that I will now have to reapply, I did not have any problem removing the harmonic balancer and outer pulley. The holes for the bolts on the lower timing belt gear look like they are a small diameter, 6mm or 6.5mm x 1mm thread. Do you happen to know? They do not match anything I have on hand.
Kind regards,
Wade
Kind regards,
Wade
#5
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Thank you Good2Go! I own that tool and a couple of variations on it. Do you happen to know what bolts I need to pull the crankshaft gear? Other than the ~300 ft/lb of torque on the crankshaft nut that I will now have to reapply, I did not have any problem removing the harmonic balancer and outer pulley. The holes for the bolts on the lower timing belt gear look like they are a small diameter, 6mm or 6.5mm x 1mm thread. Do you happen to know? They do not match anything I have on hand.
Kind regards,
Wade
Kind regards,
Wade
When you get to it, one trick for re-installing the harmonic pulley is to pop it into the oven at 175* for a half hour or so. Grab it with the oven mits and it slides right on with a distinct "clunk" sound when it bottoms. Also, I think the correct torque spec on the crank bolt is only 240 ft.lbs., not 300.
Also, why aren't you doing the cam seals too? Originally, I didn't do mine either when I did all the other stuff, but then had to go back to do it over about a year later when they started leaking. Cheap insurance.
#6
6mm x 1mm x >=50mm
The threads on the 1993 SC300 crankshaft sprocket are 6mm x 1mm. The longest 6mm x 1mm bolts I could find in my local market were 50mm long. They worked fine although I had to reverse the puller to finish the job. Replacing the seal was simple. Now, to put everything back together and see if I actually fixed the leak or just chased it to another location. I decided to replace the comparatively new pollution control valve just in case a clogged PCV was causing overpressurization.
Thanks for your help!
Thanks for your help!
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