Ranger 4.0L SOHC Tensioner, T-stat housing, etc replacement (graphic intensive)

[john112deere]

Good pictures. How many miles you got on that thing?

Originally Posted by CowboyBilly9Mile

I pity anyone that has to/had to replace the right side rear cassette and timing chain on one of these engines and in part because of this concern, this is why me and others replace the tensioners, think of it as routine maintenance. To get to that back cassette and timing chain, you get to yank the engine or *maybe* drop the tranny and slide the engine forward or tilt the back down. Either way, it'll suck.

I've long figured (since before I bought it, in fact) replacement of a right timing chain cassette could be a repair that'll total my truck. Past 10 years or so years in road salt country, I don't think I'd bother with that much effort.

[CowboyBilly9Mile]

128K. Other than running a quality oil with regular changes, IMO and given how easy the job and cheap is, if the only PM I were to do in the name of timing chains matters it would be to replace the RH tensioner. Some people say that if you hear timing chain noise (can be be pronounced on startup), that you might fix that with new tensioners. I"m sure that fix has worked for some, but I bet by the time it gets to that point there is some accelerated wear on the cassettes that isn't in anyone better interests.

[CowboyBilly9Mile]

Next few pics show RH valve cover reinstalled along with vac hoses, wiring, cooling system hoses and coolant tube assembly.

















Next is installation of the upper and lower thermostat housing, hoses (pay attention to clamp locations) and associated parts along with alternatior wiring. It's worth noting that contrary to what the Ford FSM says regarding replacement of the two temperature sending units, removal of the intake is NOT required to gain access to replace these (each is held in by a clip, could be different if they are the threaded type).














***Pay attention to wire routing so as to not have future abrasion issues. Pics shown in this thread show OEM location and routing for all hoses, clamps and wiring, including spark plug wires.