Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [drive-belt]

Questions related to accessory belt drive system which drives alternator, coolant pump, AC compressor and other accessories using the power drawn from the crank shaft pulley in automotive engines.

Accessory belt drive system drives the alternator, coolant pump, AC compressor and other accessories if present in a standard automotive engine. Additionally a tensioner system can be present in the drive layout for its smooth, jerk free operation.

Tensioner systems can be manual or automatic. A manual tensioner system, requires manual intervention to apply tension to the drive belt. It is achieved by changing the tensioner pulley position manually to increase the drive tension.

An automatic belt tensioner maintains the required belt tension without any external input and is designed using springs, friction elements or other hydraulic dampers. It helps in eliminating the belt deflections during the start and stop of the engine.

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New alternator whining?

I have a concern about a new alternator I put on my 02 echo, again it too does not have a tensioner. Belt tension is created by pivoting the alternator away from the engine. This was the first time for me putting an alternator on without a tensioner…
Justin Brown
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Engine Squeaks when turned off after replacing the valve cover gasket

I recently changed the valve cover gasket on my 2006 Elantra because it was leaking. There was no noise coming from the engine whatsoever before I made the repair. I did extensive research and it seemed like the repair process went smoothly (no more…
Refat Ismail
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Where is the drive-belt tensioner, on a Renault Sandero K7M 1.6 8v?

Whilst replacing my drive-belt on a renault sandero 1.6 8v, I have tried to turn two of the pulleys/wheels to see if they will allow slack for replacing my drive-belt(using a hand-spanner) but neither of the 2 most likely candidates is budging. Is…
Jim
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How to remove the serpentine belt on a 2007 Chevy Malibu

I know where to get the tool I need but am in need of a diagram so I know where it fits. EDIT: It has the V6 in it.
Joni
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Selection of variable speed belt for CVT

I can't figure out how to select variable speed belt for our variable speed drive design with the following specifications of our BAJA vehicle: 1.) BHP= 10HP 2.) Max. Belt velocity = 35 m/sec 3.) Max. Engine RPM = 3700 We are designing this…
Vaibhav Dixit
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How to adjust or find the optimal drive belt tightness?

I need to change my Toyota Matrix 2012 alternator. The installation is not complicated, except I need to lose the drive belt and tighten it again. Is there any guideline on how to find the optimal tightness for the drive belt? Is the tightness can…
Allan Xu
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Found the cause of a metallic rattle/scrape from the rear - how urgent is this?

Yesterday and today I noticed a strange scraping noise from the rear of my Ultra Limited, and was thinking grit in the brake, or possibly a bearing going as every time I looked there was nothing. Then when pushing back I heard a clunk and spotted…
Rory Alsop
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Craftsman Garden Tractor 26 HP no Drive when I let the clutch out

Craftman 26 HP Electric Start 6 Speed Transaxle Model 917.25024. my problem is very simular first mow of the season. mowed about 15 ft. and stopped to check how it was mowing and when i went to let the clutch out nothing there. the difference…
M J Hartman
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Can anyone help with serpentine belt diagram for K7M engine(Renault Sandero)?

Renault Sandero(K7M) 1.6 8v. I have taken the belt off to inspect it, and now am wanting to put it back. I made a diagram but I'm starting wonder if I made an error in the routing of the belt over the various pulleys and wheels. Visibility is…
Jim
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Really awful noise

Every time I start the car there's this noise I don't know how to describe. It's there immediately upon start, during idle, while driving, constant. I have been ignoring it because everything works fine. Yesterday it got significantly worse. Now it…
findwindow
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How to set correct drive belt tension?

I'm replacing the drive belts on a 1997 Nissan Wingroad. This model doesn't have an automatic tensioner and so the belts have to be adjusted manually. The service manual calls for a deflection of between 0.20" and 0.24" for one of the belts and…
jrcollins
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Does a drive belt with dry rot always have cracks?

I took my car into my auto mechanic, and they told me that my serpentine/drive belt needed immediate replacement due to dry rot. I let them replace it for me, but afterwards I looked more closely at their vehicle report, which had photos for each of…
Betterthan Kwora
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Effect of start-stop technology in accessory belt drive system life, of automotive engines

Does start-stop technology (In Cars/Trucks) during traffic stops cause significant reduction in life for the accessory belt and tensioner system in engines? Assumptions 1) The belt and tensioner system are subjected to a fluctuating load during the…
Harilal Remesan
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