So, you’re staring at that stubborn harmonic balancer, the engine’s humming a tune of impending doom, and you’re wondering, “Can I use original bolts to remove harmonic balancer?” I’ve been there. Staring at a part that’s welded itself to the crankshaft like it’s got a personal vendetta. I’ve wasted a solid chunk of my Saturday, and a bit of my sanity, wrestling with this exact problem on my old ’98 Accord. The temptation to just grab whatever bolt is lying around is strong, especially when you’re hot, greasy, and getting frustrated.
But before you go rummaging through that ancient bolt bin, let’s talk about what actually works and what’s just going to make your life harder. This isn’t always as straightforward as it seems, and there are a few things that separate a quick job from a full-blown mechanical meltdown.
Why You Might Be Tempted to Use Original Bolts
Look, nobody wants to make a special trip to the auto parts store. You’re in the middle of a repair, you’ve got the right tools out, the engine bay is feeling… accessible. And then you hit the harmonic balancer. It’s usually held on by one big bolt, right? Or maybe a few smaller ones. The common advice, and the stuff you’ll find in most DIY forums, is about using a harmonic balancer puller, and sometimes a breaker bar and a socket. But what if you don’t have a puller handy, or the bolt head looks stripped, or you just want to see if you can get it off with what you’ve got?
This is where the original bolts start looking like a viable, if slightly desperate, option. Maybe you’ve already removed the main crankshaft bolt, and you’re thinking, “Hey, these little accessory bolts are a decent size. Can I use original bolts to remove harmonic balancer by threading them into the threaded holes on the balancer and using them to pry it off?” It’s a thought process that’s born out of practicality and a desire to keep moving.
I’ve seen people try this on all sorts of components where a specific puller is recommended. The logic is: if you can get a solid grip on something, you can work it loose.
And those threaded holes on some harmonic balancers are begging to be used for something other than just holding the balancer itself.
The problem, though, is that those threaded holes, when they exist, are usually designed for specific bolts that come with a harmonic balancer puller. They’re meant to be threaded in a specific depth and to apply even pressure. Using random original bolts—or worse, bolts you find lying around—can be a gamble. You might thread them in too far and damage the crankshaft behind it, or not far enough for them to get a good bite. Or the bolt might be made of a weaker material and snap off under the pressure, leaving you with an even bigger mess. It’s a shortcut that often leads you down a much longer, more frustrating road.
The Reality of Harmonic Balancer Removal
Let’s get one thing straight: the harmonic balancer is often pressed onto the crankshaft. It’s not usually held on by a bolt that’s meant to be a lever. That big bolt in the center? Its primary job is to hold the balancer onto the crank and to keep it aligned. The balancer itself has mass and is designed to absorb vibrations – hence the name. It can be a real pain to get off because it’s a tight, interference fit. That’s where a proper harmonic balancer puller comes into play. These tools are designed to grip the edge of the balancer and use threaded rods to push against the crankshaft snout, slowly and evenly working the balancer off.
So, can I use original bolts to remove harmonic balancer as part of this process? Generally, no. The accessory bolts you might be referring to, if your balancer has them (not all do), are usually for smaller components that might bolt onto the face of the balancer. They aren’t designed to be the primary force for pulling the entire unit off.
If you try to thread random bolts into these holes and crank on them with a wrench, you’re basically trying to use them as the ‘push’ points for your makeshift puller. This is where things go south fast.
The bolts can strip out the threads in the balancer, or the bolts themselves can snap. I once tried to use some slightly-too-long bolts on a power steering pulley, thinking they’d work like puller bolts. They went in too far, bottomed out on the shaft, and then sheared off.
I spent another two hours drilling those broken bolts out. Not a fun memory. (See Also: Can You Use Wd40 To Loosen Bolts )
The crankshaft bolt, the big one, is what you’d use with a very specific type of puller that engages the threads of the crankshaft itself, but that’s a whole different ball game and not what most people mean when they ask about using ‘original bolts’. For the typical scenario, where you’re looking to use the balancer’s own features or the surrounding area, relying on random original bolts is a bad idea. You need a tool that’s engineered for the job, applying force to the right points without damaging anything. This is one of those areas where spending a little money on the right tool saves you a whole lot of headache and potential repair costs down the line. A good puller usually costs between $30 and $80, a fraction of what it costs to fix a damaged crankshaft or stripped threads.
The Right Tool for the Job: Harmonic Balancer Pullers
When you’re faced with a harmonic balancer that’s practically glued to the crankshaft, the tool you need is a harmonic balancer puller. These aren’t fancy, expensive gadgets. They’re usually a relatively simple setup involving a central forcing screw, a yoke or body that rests against the center of the crankshaft, and a few threaded legs or arms that screw into the specific threaded holes on the harmonic balancer itself. If your balancer doesn’t have those threaded holes, some pullers come with universal jaws that can grip the outer edge of the balancer. It’s this specific design that makes all the difference.
The process is straightforward: you thread the puller’s legs into the balancer’s threaded holes. Then, you place the central forcing screw so its tip rests against the end of the crankshaft. As you turn the forcing screw, it pushes outwards against the crankshaft. Because the puller’s legs are securely in the balancer, this outward force on the crank effectively pulls the balancer away.
It’s a controlled, even pressure that’s designed to overcome the interference fit without damaging any components. This is the method that works, and it’s why the question ‘can i use original bolts to remove harmonic balancer’ is generally a ‘no’ in this context. Those original bolts aren’t part of this puller system; they’re just holding something else on, or if they are the balancer bolts, they’re not designed for the load of pulling.
I remember the first time I used a proper puller. I’d been fighting a stubborn balancer for hours, trying to pry it, tap it, and basically curse it off. I finally broke down and bought a cheap puller kit from AutoZone.
Within 20 minutes, the balancer was off. It felt… anticlimactic, but in the best possible way. The relief was immense. The puller legs screwed in perfectly, the forcing screw was smooth, and the whole thing just worked.
It saved me from potentially damaging the crankshaft or the balancer itself, and it definitely saved me a massive headache. There are different types of pullers out there, some for specific makes and models, and others that are more universal. For most common passenger cars and light trucks, a universal kit will do the job nicely.
You can often rent these from auto parts stores too, which is a great option if you don’t plan on doing this job again anytime soon.
Common Mistakes to Avoid
The biggest mistake is exactly what we’re talking about: trying to improvise with the wrong parts. People look at those threaded holes and think, “Aha! A place to put a bolt and use!” They grab whatever bolts are nearby, maybe from an old bracket or just from their toolbox, and start threading them in. This is a recipe for disaster. Firstly, the bolt material strength is usually not up to par for the force needed. They’re designed for holding, not for being turned into jack screws. They can snap, leaving you with a broken bolt inside the balancer’s threaded hole, which is a nightmare to extract.
Secondly, thread engagement is key. The specific bolts that come with a puller kit are designed to thread into the balancer to a specific depth.
Using random bolts means you might thread them in too far, potentially bottoming out on the crankshaft snout itself. This can damage the end of the crankshaft or even crack the balancer. (See Also: Does Heating Rusted Bolts Help Get Them Free )
Alternatively, you might not thread them in far enough, and they’ll strip out the threads in the balancer. I’ve seen this happen. A buddy of mine tried to use some longer, beefier-looking bolts he had lying around. He got them in, started to turn the center screw, and pop – one of the bolts snapped, and the other just spun, having stripped the threads in the balancer.
We ended up having to drill out the broken bolt and then re-tap the damaged threads. It added a good three hours to what should have been a quick job.
Another common mistake is trying to hammer or pry the balancer off without a puller. While some older, less tightly fitted balancers might come off with strategic tapping, most modern ones are on there tight. Excessive force from a hammer or pry bar can damage the balancer itself (which can cause it to fail prematurely) or, worse, damage the crankshaft snout or the timing cover. It’s just not worth the risk. Think of it like trying to open a stubborn jar: you can try brute force, but a good jar opener (the puller) will do it cleanly and efficiently.
| Method | Pros | Cons | Verdict |
|---|---|---|---|
| Using Original/Random Bolts as Use | None, really. Might seem quicker if it works. | High risk of snapping bolts, stripping threads, damaging crankshaft/balancer. Wastes time and creates bigger problems. | Avoid. Utterly. |
| Hammering/Prying | Might work on very loose balancers (rare). | High risk of damaging balancer, crankshaft, or timing cover. Ineffective on tight fits. | Risky. Generally a bad idea. |
| Proper Harmonic Balancer Puller | Controlled, even force. Minimizes risk of damage. Designed specifically for the task. | Requires purchasing or renting a tool. | The only sensible option. |
When Are Original Bolts Not the Answer?
Let’s be crystal clear: if you’re looking to remove the harmonic balancer from the crankshaft, the original bolts that hold accessory components onto the balancer, or the main crankshaft bolt itself, are almost never going to be used directly as the pulling mechanism. When you’re asking ‘can i use original bolts to remove harmonic balancer’, you’re probably thinking about threading them into the holes on the balancer to act like the legs of a puller. That’s the common misconception, and it’s a bad one.
The threaded holes that are on some harmonic balancers are specifically designed to accept the threaded rods of a harmonic balancer puller tool. These holes are part of the system.
The bolts that came with your engine from the factory are designed for their original purpose – securing whatever they were originally attached to. They aren’t engineered to withstand the torsional and tensile forces involved in unseating a pressed-on component like a harmonic balancer. I learned this the hard way trying to remove a power steering pulley on an old Jeep. It had threaded holes, and I figured I could just use some longer bolts to pull it off.
The bolts snapped halfway in, leaving me with a mess. It taught me a valuable lesson: the holes are there for a specific reason, and you need the tool designed for those holes.
The main crankshaft bolt is often a very large, high-strength bolt. While you might be able to thread a specialized puller into the crankshaft itself (not into the balancer), this is a very specific procedure for certain types of pullers and not a general method of using “original bolts.” Even then, the crankshaft bolt is typically removed first so that the puller can access the crankshaft snout. So, to reiterate, using original bolts to directly lever off or pull a harmonic balancer is a fundamentally flawed approach. It’s akin to trying to hammer a nail with a screwdriver – it might technically hit the nail, but you’re likely to damage both the screwdriver and the nail head, and it’s far less effective than using a hammer.
Practical Tips for Success
When you’re ready to tackle that harmonic balancer, here are a few tips that will save you time and frustration. First off, accept that you probably need a harmonic balancer puller. It’s an investment, but a worthwhile one. If you’re just doing one repair, see if you can rent one from an auto parts store like AutoZone, Advance Auto Parts, or O’Reilly.
They often have loaner tool programs where you pay a deposit, use the tool, and get your money back when you return it. This is a fantastic way to get access to specialized tools without breaking the bank.
Make sure to get the right type – some are universal, while others are specific to certain makes or models (like GM, Ford, or Chrysler). Check your vehicle’s service manual or do a quick online search to see what’s recommended for your specific car. (See Also: Does Anti Seize Cause Bolts To Loosen )
Before you even think about pulling, spray some penetrating oil (like PB Blaster or Kroil) onto the threads of the balancer bolt and around the area where the balancer meets the crankshaft. Let it soak for a good 15-30 minutes, or even longer if you have the time. This can help loosen up any rust or corrosion that’s making the balancer stick.
When you’re using the puller, thread the legs in evenly, making sure they’re snug but not overtightened, to avoid stripping the threads in the balancer. Once the puller is set up, turn the forcing screw slowly and steadily. You should feel it start to bind.
If it feels like you’re about to snap a bolt or strip a thread, stop. Double-check your setup.
Sometimes, a few gentle taps with a rubber mallet on the side of the balancer (not directly on it) can help break the bond while the puller is under tension. This is a delicate balance, though; too much force and you risk damage.
Once the balancer is off, clean the crankshaft snout thoroughly. Remove any rust, debris, or old lubricant.
A wire brush or some fine-grit sandpaper can work wonders. Make sure the snout is smooth and clean before installing the new balancer or putting the old one back on. Lubricate the snout with a thin film of grease or anti-seize compound before installing the new balancer. This will make future removal much easier.
When reinstalling, use a proper balancer installer tool or a large socket that fits the outer race of the balancer and a long bolt. You want to press it on evenly, not hammer it.
And whatever you do, remember the answer to ‘can i use original bolts to remove harmonic balancer’ is a resounding no.
Final Thoughts
So, to wrap this up: can I use original bolts to remove harmonic balancer? The short, blunt answer is no. If you’re looking at those threaded holes on the balancer and thinking your spare bolts will do the trick, you’re setting yourself up for a bad time. You risk stripping threads, snapping bolts, or damaging the crankshaft. It’s just not what those bolts were designed for, and it’s not how the balancer is meant to come off.
The reliable, frustration-free way involves a specific tool: a harmonic balancer puller. These aren’t ridiculously expensive, and many auto parts stores will let you rent one. It’s a small price to pay to avoid the headache and potential damage that comes from improvising. Trust me, I’ve been down the ‘improvisation’ road more times than I care to admit, and it rarely ends well for the DIYer. Save yourself the grief and get the right tool for the job. Your future self will thank you.
