push rod and lifter higher than others
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
I'm wondering if you could take a cloth tape measure and wrap it around the damper and note the circumference, then divide that number by three to get 120 degrees. Then paint a mark at the two 120 degree points on the damper.
Exactly.
Use the flange with the index mark on it to mark the 120 degree increments.
The flange with the index mark is 6.625" in diameter so; 6.625 X 3.14159 = 20.81" circumference, divided by 3 = 6.94" = 120 degrees. Using the cloth tape measure and make two marks on the flange every 6-15/16". This will put you in the ballpark.
If turning the damper 120 degrees will bring up #5 to TDC, what about the next cylinders in the firing order?
Exactly.
Use the flange with the index mark on it to mark the 120 degree increments.
The flange with the index mark is 6.625" in diameter so; 6.625 X 3.14159 = 20.81" circumference, divided by 3 = 6.94" = 120 degrees. Using the cloth tape measure and make two marks on the flange every 6-15/16". This will put you in the ballpark.
If turning the damper 120 degrees will bring up #5 to TDC, what about the next cylinders in the firing order?
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
I guess all i needed to do was rotate the crankshaft. That allowed that high push rod to go down and elevated others. I guess that's day one stuff.
Way to go mate.
The Haynes manual doesn't mention anything about putting each cylinder at TDC then torquing those rocker arm bolts. It just says to torque them all down zip zap. It also said to put RTV on the head gasket. After searching the forum common consensus was to leave head gasket dry. I might as well leave that manual on the shelf.
Way to go mate.
The Haynes manual doesn't mention anything about putting each cylinder at TDC then torquing those rocker arm bolts. It just says to torque them all down zip zap. It also said to put RTV on the head gasket. After searching the forum common consensus was to leave head gasket dry. I might as well leave that manual on the shelf.
The Factory Service Manual is about the only thing you'll need, other than guidance from experienced people here on the Forum. The FSM contains mistakes here and there that's why experience comes in handy.
As far as having the cylinder at TDC to torque down the rocker cap screws, the FSM doesn't say to do this but experience shows that when doing it you avoid twisting the rocker bridges and obtaining a proper torque on the cap screws. Of course, it's required when determining lifter preload.
I fired it up today. It didn't sound real good. Something taping from somewhere under the valve cover. I couldn't really locate it.
I torqued each exhaust and intake rocker 20lbs in order 153624 when the piston was at the top of the cylinder for each in the firing order. I determined this by removing the spark plugs and watching the cylinder move up and down. I had someone else watch the back cylinders why i turned the crank.
Where do i go next? I do have the gas and matches still handy.
I torqued each exhaust and intake rocker 20lbs in order 153624 when the piston was at the top of the cylinder for each in the firing order. I determined this by removing the spark plugs and watching the cylinder move up and down. I had someone else watch the back cylinders why i turned the crank.
Where do i go next? I do have the gas and matches still handy.
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
I fired it up today. It didn't sound real good. Something taping from somewhere under the valve cover. I couldn't really locate it.
I torqued each exhaust and intake rocker 20lbs in order 153624 when the piston was at the top of the cylinder for each in the firing order. I determined this by removing the spark plugs and watching the cylinder move up and down. I had someone else watch the back cylinders why i turned the crank.
Where do i go next? I do have the gas and matches still handy.
I torqued each exhaust and intake rocker 20lbs in order 153624 when the piston was at the top of the cylinder for each in the firing order. I determined this by removing the spark plugs and watching the cylinder move up and down. I had someone else watch the back cylinders why i turned the crank.
Where do i go next? I do have the gas and matches still handy.
Fram tough gaurd filter and cheap 10w 30 walmart oil. Before i did the head i had changed the oil and let it run for 30 seconds so there wouldnt be watery oil all over sitting because i didnt have a chance to jump right on fixing it.
That oil was still in there on start up. i had planned on running it for a few minutes to gather some of the watery oil that remained in the motor. Then change it with new oil. So the old filter is still on there and some walmart oil that a put in there a month ago and got ran for 30 seconds.
Before i started it after the new head i looked at the dip stick. It had clean oil on it. After this last start up with the new head the oil was all milky on the dipstick again. Could there be that much water residue still in the motor?
That oil was still in there on start up. i had planned on running it for a few minutes to gather some of the watery oil that remained in the motor. Then change it with new oil. So the old filter is still on there and some walmart oil that a put in there a month ago and got ran for 30 seconds.
Before i started it after the new head i looked at the dip stick. It had clean oil on it. After this last start up with the new head the oil was all milky on the dipstick again. Could there be that much water residue still in the motor?
After searching around i noticed that most people talked about putting assembly lube on the rockers,pivits, and push rods. I didnt do that. Just poured some 10-30 on top of the rockers before i put the valve cover on. Maybe thats a issue?
I guess the only thing to do is change oil and filter reassemble each rocker with assembly lube and torque them all again at TDC.
I guess the only thing to do is change oil and filter reassemble each rocker with assembly lube and torque them all again at TDC.
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
After searching around i noticed that most people talked about putting assembly lube on the rockers,pivits, and push rods. I didnt do that. Just poured some 10-30 on top of the rockers before i put the valve cover on. Maybe thats a issue?
I guess the only thing to do is change oil and filter reassemble each rocker with assembly lube and torque them all again at TDC.
I guess the only thing to do is change oil and filter reassemble each rocker with assembly lube and torque them all again at TDC.
No need to redo the rockers with assembly lube. The motor oil you used should be okay as is.
After searching around i noticed that most people talked about putting assembly lube on the rockers,pivits, and push rods. I didnt do that. Just poured some 10-30 on top of the rockers before i put the valve cover on. Maybe thats a issue?
I guess the only thing to do is change oil and filter reassemble each rocker with assembly lube and torque them all again at TDC.
I guess the only thing to do is change oil and filter reassemble each rocker with assembly lube and torque them all again at TDC.
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Well i finally figured out why i was getting a tapping from my rockers. The machine shop that had built my motor a year ago must have lost one of my rocker arm bolts. They replaced it with a bolt one inch longer than your standard bolt. So the bolt would bottom out and not hold that rocker arm tight when you torqued it. This also caused a broken rocker arm bridge which i discovered on the initial head removal.
I replaced the bolt with one the proper length and now shes quiet as could be. No tapping. That machine shop has gone out of business. Makes you wonder why they closed their doors.
I replaced the bolt with one the proper length and now shes quiet as could be. No tapping. That machine shop has gone out of business. Makes you wonder why they closed their doors.
CF Veteran
Joined: Aug 2010
Posts: 8,357
Likes: 103
From: Canton, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Well i finally figured out why i was getting a tapping from my rockers. The machine shop that had built my motor a year ago must have lost one of my rocker arm bolts. They replaced it with a bolt one inch longer than your standard bolt. So the bolt would bottom out and not hold that rocker arm tight when you torqued it. This also caused a broken rocker arm bridge which i discovered on the initial head removal.
I replaced the bolt with one the proper length and now shes quiet as could be. No tapping. That machine shop has gone out of business. Makes you wonder why they closed their doors.
I replaced the bolt with one the proper length and now shes quiet as could be. No tapping. That machine shop has gone out of business. Makes you wonder why they closed their doors.
Makes one wonder what will pop up next because of their butchery.
Senior Member
Joined: Apr 2012
Posts: 578
Likes: 4
From: Ocean, New Jersey
Year: 2000
Model: Cherokee
Engine: 4.0
Well i finally figured out why i was getting a tapping from my rockers. The machine shop that had built my motor a year ago must have lost one of my rocker arm bolts. They replaced it with a bolt one inch longer than your standard bolt. So the bolt would bottom out and not hold that rocker arm tight when you torqued it. This also caused a broken rocker arm bridge which i discovered on the initial head removal.
I replaced the bolt with one the proper length and now shes quiet as could be. No tapping. That machine shop has gone out of business. Makes you wonder why they closed their doors.
I replaced the bolt with one the proper length and now shes quiet as could be. No tapping. That machine shop has gone out of business. Makes you wonder why they closed their doors.
Thanks for letting us know. Just curious though you didn't notice the longer bolt when had the rockers off. That bolt should have stood out like a sore thumb.
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