Idler Pulley Torque question
01-07-2015, 10:37 PM
#1
Racer
Thread Starter
Idler Pulley Torque question
guys, sanity check here.
I removed what i would call the lower pulley during my water pump replacement. Green arrow in photo. question on torque spec. I will copy the sentences from Pelican below but my question is that it says lower pulley is tightened to 17 ft-lbs. The reason for my question is in the first sentence it says for bolts M10x145 (8.8) should be 34 ft-lbs. My lower pulley bolt is a M10x145 (8.8). So due to the location would it be less torque or is it 34 due to bolt size? thanks
quote -
"simply install the bolts and tighten to 34 ft-lb (46 Nm) for the upper bolt if it's an M10x145 (8.8) bolt or 48 ft-lb (65 Nm) if it's an M10x145 (10.9). The lower pulley is tightened to 17 ft-lb (23 Nm)."
I removed what i would call the lower pulley during my water pump replacement. Green arrow in photo. question on torque spec. I will copy the sentences from Pelican below but my question is that it says lower pulley is tightened to 17 ft-lbs. The reason for my question is in the first sentence it says for bolts M10x145 (8.8) should be 34 ft-lbs. My lower pulley bolt is a M10x145 (8.8). So due to the location would it be less torque or is it 34 due to bolt size? thanks
quote -
"simply install the bolts and tighten to 34 ft-lb (46 Nm) for the upper bolt if it's an M10x145 (8.8) bolt or 48 ft-lb (65 Nm) if it's an M10x145 (10.9). The lower pulley is tightened to 17 ft-lb (23 Nm)."
01-07-2015, 10:59 PM
#2
guys, sanity check here.
I removed what i would call the lower pulley during my water pump replacement. Green arrow in photo. question on torque spec. I will copy the sentences from Pelican below but my question is that it says lower pulley is tightened to 17 ft-lbs. The reason for my question is in the first sentence it says for bolts M10x145 (8.8) should be 34 ft-lbs. My lower pulley bolt is a M10x145 (8.8). So due to the location would it be less torque or is it 34 due to bolt size? thanks
quote -
"simply install the bolts and tighten to 34 ft-lb (46 Nm) for the upper bolt if it's an M10x145 (8.8) bolt or 48 ft-lb (65 Nm) if it's an M10x145 (10.9). The lower pulley is tightened to 17 ft-lb (23 Nm)."
I removed what i would call the lower pulley during my water pump replacement. Green arrow in photo. question on torque spec. I will copy the sentences from Pelican below but my question is that it says lower pulley is tightened to 17 ft-lbs. The reason for my question is in the first sentence it says for bolts M10x145 (8.8) should be 34 ft-lbs. My lower pulley bolt is a M10x145 (8.8). So due to the location would it be less torque or is it 34 due to bolt size? thanks
quote -
"simply install the bolts and tighten to 34 ft-lb (46 Nm) for the upper bolt if it's an M10x145 (8.8) bolt or 48 ft-lb (65 Nm) if it's an M10x145 (10.9). The lower pulley is tightened to 17 ft-lb (23 Nm)."
Yes, torque spec is a function of bolt size (shank size) and grade.
01-08-2015, 12:52 AM
#5
Racer
Thread Starter
Ahsai. Read your response again and by location I meant the location of the pulley in question being the lower one where pelican states 17 ft-lbs. That's where I was getting confused on bolt size and torque requirements.
So did you also torque your lower one to 34?
So did you also torque your lower one to 34?
Last edited by BTERRY1; 01-08-2015 at 01:16 AM.
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sierra73 (10-31-2023)
11-03-2023, 02:44 PM
#6
Did you ever find out on the lower pulley by any chance ?
11-11-2023, 09:40 AM
#7
guys, sanity check here.
I removed what i would call the lower pulley during my water pump replacement. Green arrow in photo. question on torque spec. I will copy the sentences from Pelican below but my question is that it says lower pulley is tightened to 17 ft-lbs. the first sentence suggests that bolts M10x145 (8.8) should be tightened to 34 ft-lbs. Since my lower pulley bolt is of the same specifications (M10x145, 8.8), I'm curious if the location might necessitate a lower torque or if the specified 34 ft-lbs is applicable universally due to the bolt size. It's akin to considering different torque settings for various components, much like how different haircuts require distinct styling techniques for the best results? thanks
quote -
"simply install the bolts and tighten to 34 ft-lb (46 Nm) for the upper bolt if it's an M10x145 (8.8) bolt or 48 ft-lb (65 Nm) if it's an M10x145 (10.9). The lower pulley is tightened to 17 ft-lb (23 Nm)."
I removed what i would call the lower pulley during my water pump replacement. Green arrow in photo. question on torque spec. I will copy the sentences from Pelican below but my question is that it says lower pulley is tightened to 17 ft-lbs. the first sentence suggests that bolts M10x145 (8.8) should be tightened to 34 ft-lbs. Since my lower pulley bolt is of the same specifications (M10x145, 8.8), I'm curious if the location might necessitate a lower torque or if the specified 34 ft-lbs is applicable universally due to the bolt size. It's akin to considering different torque settings for various components, much like how different haircuts require distinct styling techniques for the best results? thanks
quote -
"simply install the bolts and tighten to 34 ft-lb (46 Nm) for the upper bolt if it's an M10x145 (8.8) bolt or 48 ft-lb (65 Nm) if it's an M10x145 (10.9). The lower pulley is tightened to 17 ft-lb (23 Nm)."
Does anybody have it?
Last edited by irontmp; 11-11-2023 at 09:44 AM.
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11-11-2023, 05:49 PM
#8
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