Adjusting drive belt

K

kahlilj

Member
Car
2006 FX35 AWD
This seems simple enough, but I can't find a write up on adjusting the drivebelt or at least with pics or video. I'm a new owner of an FX35 (2006) and recently it started squealing. I'm pretty sure it's the drivebelt. So I'd like to tighten it, but am unsure of what parts I need to work on. I researched several threads on here & think i have an idea, but was surprised there was no "how to" thread. It seems there are a couple of pulleys that I need to loosen their lock nut then adjust the adjusting bolts?

I saw this thread but the links on it no longer work:
FX35 - belt

Any help with pics or video on exactly how to do this?
 
The large center pulley is the crankshaft pulley. Both belts are attached to it. The much smaller black pulleys, one on either side of the crankshaft pulley, are the belt tensioner pulleys. The bolt to make adjustments is at the bottom of the bracket that each of these two pulleys are attached to. It allows the pulley to travel up and down, tightening and loosening the tension on the belt. IIRC, I believe a 10mm socket is needed for both the adjustment bolt and the pulley.
Loosen the bolt in the center of the pulley.
Loosen or tighten the adjustment bolt at the bottom of the pulley bracket.
Tighten the bolt for the pulley back up once the belt is appropriately tightened.
I cannot remember torque specs for the pulley bolt. Snug.

engine front.JPG
 
onthemove said:
The large center pulley is the crankshaft pulley. Both belts are attached to it. The much smaller black pulleys, one on either side of the crankshaft pulley, are the belt tensioner pulleys. The bolt to make adjustments is at the bottom of the bracket that each of these two pulleys are attached to. It allows the pulley to travel up and down, tightening and loosening the tension on the belt. IIRC, I believe a 10mm socket is needed for both the adjustment bolt and the pulley.
Loosen the bolt in the center of the pulley.
Loosen or tighten the adjustment bolt at the bottom of the pulley bracket.
Tighten the bolt for the pulley back up once the belt is appropriately tightened.
I cannot remember torque specs for the pulley bolt. Snug.

View attachment 564401
Click to expand...

ThankS OTM! I found them. Here’s a pic from my rusty engine. IMG_0426.jpg
 
I'd spray the bolts with maybe wd40, pb blaster or an equivalent and let'em chill for awhile before wrenching on'em.
My engine didn't look much better before I whipped it into shape.
 
onthemove said:
I'd spray the bolts with maybe wd40, pb blaster or an equivalent and let'em chill for awhile before wrenching on'em.
My engine didn't look much better before I whipped it into shape.
Click to expand...

Oh for sure I had already done that before I sent the pic. lol. Not sure if it showed in the pic or not. But it was easier than it looked to loosen the pulley bolt and the adjusting bolt too. Pulley was 14 mm. Adjusting bolts were 12 mm. I adjusted both pulleys in less than 20 mins. Squeal is gone!
Thanks again for your help [emoji1474]

Now on to the next thing: Spark plug replacement. Are y’all using anything other than stock?

Forum search here I come [emoji846]
 
Platinum is stock. Not the best choice unless your looking for longevity. Coppers good and Iridium is best im not so ho.
 
"NGK gives them a life expectancy of 40-50k miles. But they have to temper their projections as driving conditions and motor modifications differ. Typically we have found you can expect 60,000 to 80,000 miles on an unaltered motor."
40-50k miles is a long time for me.
 
If after replacing the belts it continues to squeak, you will need to change the tensioner and idle pulleys
 
onthemove said:
"NGK gives them a life expectancy of 40-50k miles. But they have to temper their projections as driving conditions and motor modifications differ. Typically we have found you can expect 60,000 to 80,000 miles on an unaltered motor."
40-50k miles is a long time for me.
Click to expand...

I don’t have my owners manual with me, but saw this from NGK’s site. Is this the type you’re using?
IMG_0510.jpg

The LFR5AIX?
 
Will do. But I also noticed this Ruthenium plug? Never heard of that types before. Tried doing a search on the internet for comparison with Iridium plugs but not seeing much other than material comparisons. Ever heard of these before?
 
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