only if the idler arm will not hold the tension on the belt and the pulley needs replaced when the are warn sharp or warn flat
you need to pull the valve cover and oil pan and front cover and then you can replace the upper timing chain on the altima but if you are going to do this job i would recommend you replace the gear that hooks the lower and upper chain together this is called the idler gear and it is the one that causes the noise all the time.
which ones? upper or lower?
yes you do
To replace the upper and lower drive belts on an MTD 13AJ688H131, first, disconnect the spark plug for safety. Remove the mower deck and any necessary covers to access the belts. Take note of the belt routing, then remove the old belts by releasing the tension and sliding them off the pulleys. Install the new belts by following the same routing, ensuring they are properly seated, and reassemble the mower before reconnecting the spark plug.
If it is a 4cyl then no. It has an upper and lower timing chain. If it is a 6cyl then yes. It has a timing belt, an idler, and a belt tentioner that all should be replaced at the same time.
I have lost both my upper and lower dentures and i have no money to re[place them. Is ther any help for me anywhere?
Upper and lower ball joints (4). Inner and outer tie rod ends (4). Idler arm (2). Pitman arm (1).
How can I whiten my temporary upper and lower partials?
upper or lower.
opposite upper is lower Normandy.What do upper and lower refer to?
He lived some where in lower Egypt. But lower Egypt is upper Egypt because upper is lower and lower is upper.
Change lower ball joints on a 96 gmC 4 by 4