Video will show how to compare new with old parts and installing timing chains, guilds , and tensioners. Also installing rockers and checking how to make sure you have timed your motor correctly. As for torque specs, most were between 21-22 flbs . idler sprocket bolt was 25 flbs. And cam sprocket bolts were 90 flbs. Now with the cam sprocket bolts, you must hold the sprocket in place while you torque the bolt to specs. If using new hydraulic chain tensioners, you can put them on whenever. If using same ones again and can't lock the the piston back then put the on last after chains and guilds are installed but dont rotate engine until you have torque the guilds down and tensioners installed with pistons pushing on the chain guilds . Torque the cam sprockes last after verify that timing is correct. I couldn't find a tool to buy or rent to aid me with this part of the job. So i had to improvise. But this is a last resort! Try to buy one if you can, i didnt want to wait for that tool to come in the mail plus i didnt want to buy a tool for 2 minutes worth of work. Heres what i did. I used a pipe wrench and put it on the cam between the lobes. It worked great and left only a line on cam. But it will not damage anything as i only grab between the lobes. DO NOT LOCK ON LOBES! Check timing before installing rockers to verify timing marks align. Spin motor 3-4 times. If not align redo the chains. If timing marks align, install rockers and spin motor again. If motor stops spining STOP and recheck your work because timing is not right. This 4.7 motor is an interference motor! If you can spin the motor with rockers on then you wont have any damage when you try to crank up the engine. And Most likely its timed correctly as well.
Tools needed-
10mm, 13mm, 15mm & 40 torex sockets with 3" extension and ratchet and torque ratchet, rocker arm removal/install tool, 10" or 12" pipe wrench , engine assembly lube, zip ties or rubberbans
11 сен 2024
