Is the crankshaft pulley bolt on a Kia Sorento broken?
UPDATE: A class action lawsuit brought against Kia Motors in regard to the breakage of the crankshaft pulley bolt on Kia Sorento models with the 3.5L V6 may provide relief to some customers who paid to have the repair performed at a Kia authorized repair facility. There are a few caveats, however:
How do you replace a crankshaft pulley bolt?
The bolt partially came out then seized in the crank shaft. Upon removal the bolt then snapped off. I then drilled out the center, put in an extractor and the extractor snapped off. I then tapped out the bolt with a smaller tap then went to the same size as the bolt thread tap. I replaced the bolt with a new bolt.
Why does a crankshaft bolt need to be replaced?
Yes, the bolt needs replaced but the reason the bolt breaks is because the crankshaft gear has one single pin that shears off over time and causes the bolt to break. If you dont replace the gear or put a stronger pin in, which we did, you will end up with the same results.
When do I need to repair my Kia Sorento engine?
There are a few caveats, however: Kia Sorento models from 2003-2006 Customer must have completed the repair before 100,000 miles Repair performed at Kia authorized repair location Must be the 3.5l V6 engine The owner must have made a claim by May 17th, 2017
UPDATE: A class action lawsuit brought against Kia Motors in regard to the breakage of the crankshaft pulley bolt on Kia Sorento models with the 3.5L V6 may provide relief to some customers who paid to have the repair performed at a Kia authorized repair facility. There are a few caveats, however:
Is there a problem with the Kia Sorento engine?
Problem Description In order to correct a problem with the Kia Sorento 3.5l V6 engine that results in difficulty starting, engine vibration, or a rattling soundfrom the engine compartment, Kia released an updated crankshaft pulley bolt.
Where is the harmonic balancer on a Kia Sorento?
The fact that the harmonic balancer almost sits flush on the end of the crank shaft with no woodruff key (just a roll pin) seems to be a bad design too (have not ever seen this done). This 2004 Sorrento now has 160K on it. Very strong engine, still has a drinking problem. I have had the crank shaft bolt break 2x and unscrew 2x.
What kind of lock washer does Kia Sorento use?
Put a star lock washer on it. Torqued to 130lb with lock tight RED. A year later it loosened and sheared the timing gear pin (this is much better then shearing off inside the crank shaft like before). Bought another harmonic balancer and crank timing gear.
Problem Description In order to correct a problem with the Kia Sorento 3.5l V6 engine that results in difficulty starting, engine vibration, or a rattling soundfrom the engine compartment, Kia released an updated crankshaft pulley bolt.
Put a star lock washer on it. Torqued to 130lb with lock tight RED. A year later it loosened and sheared the timing gear pin (this is much better then shearing off inside the crank shaft like before). Bought another harmonic balancer and crank timing gear.
The fact that the harmonic balancer almost sits flush on the end of the crank shaft with no woodruff key (just a roll pin) seems to be a bad design too (have not ever seen this done). This 2004 Sorrento now has 160K on it. Very strong engine, still has a drinking problem. I have had the crank shaft bolt break 2x and unscrew 2x.
Is there a problem with the Sorento crankshaft?
After doing some quick research, it appears that the crankshaft bolts are a serious problem. The Sorento in question (’05) did not qualify for the recall a few years back.
What causes a crankshaft pulley bolt to break?
There are 2 problems here. Yes, the bolt needs replaced but the reason the bolt breaks is because the crankshaft gear has one single pin that shears off over time and causes the bolt to break. If you dont replace the gear or put a stronger pin in, which we did, you will end up with the same results.
After doing some quick research, it appears that the crankshaft bolts are a serious problem. The Sorento in question (’05) did not qualify for the recall a few years back.
How to tighten or remove crank bolt without pulley holder?
Step-by-Step How To Tighten or Remove Crank Bolt Without a Pulley Holder Tool. Especially useful on automatic transmissions. If you Enjoy the Channel Consider helping Support it! If you have a manual trans just put it in 5th or highest gear, parking brake on, chock wheels, & have someone hold brakes & you’ll be able to torque it down.
How to remove the drive belt tensioner on a Kia Sorento?
1. Remove the drive belt. 2. Remove the drive belt auto tensioner (A). Tensioner pulley bolt is left-hands screw. 3. Remove the drive belt tensioner (A). 4. Install in the reverse order of removal. 1. Remove the drive belt. (Refer to Timing System – “Drive Belt”) 2. Remove the idler (A). Tightenin 1. Remove the drive belt.