Working under a vehicle safely

StreetCreeper

New member
I think there is something special about 4runners that just makes a man feel like it's a truck worth saving — worth improving upon even.

Perhaps it's the general sense of quality and craftsmanship that went into these trucks at the factory. Or maybe the timeless good-looks that many modern trucks simply can't match. For me, it's both that make this older truck a real keeper.

No matter our motivations, there are plenty of people wanting to get in there with grungy hands to dig around amidst a 4runners rust and grease covered metallic guts. Absently smiling in anticipation of wielding hand tools like a surgeons bloody scalpel while wrenching out the cancerous decay caused by time, elements and neglect.

Ah...but anyways...

Before this happens, there are plenty of people who really have little or no experience working on or under a vehicle (myself included).

And this brought me to the realization that before I do anything more serious than brakes, I need to learn about working on and more specifically under a truck safely.

Here's what I know — I know the basics:

  • Trucks are heavy

  • Fixing trucks often requires laying underneath them

  • Gravity is a real B***h sometimes

  • Being dead sucks

So the topic of how to safely work under a truck doesn't seem to come up too often. Presumably because much of it is common sense.

But surely there must be some great advice based upon actual experience on how to safely work under a truck without sqashing yourself. Common sense is great; book knowledge is great too, but there is no substitute for lessons learned from experience.

So I ask, what dangerous experiences have you had under a truck in the past? What caused it and how could it have been avoided?

What kind of jack stands are good? Not necessarily what brand, but what type to look for.

What kind of Jack stand weight rating is appropriate for 4runners? I know 4runners are just under 4k stock; is a 2 ton jack cutting it too close?

Should we use more than two whenever possible?

Are wheel chocks a smart idea all the time no matter ramp or jack?

Are ramps better, or more appropriate in certain situations when the wheels are still on the truck?

Where are the safest places to put the jack stands?

Are there certain "never-do's" while working under a vehicle; lying directly under an axle for instance?

What are some safeguards that novices could/should always do before wrenching underneath a vehicle?

These are the types of questions that I think may be obvious to seasoned mechanics, but I'm not a seasoned mechanic. I am however, the type of guy who likes to not get dead — or even close to dead. In fact, "Don't get dead or even close to dead" is my motto...or at least it could be.

So I ask instead.

Now I know this forum isn't a beginners class on mechanics, and it's every single persons own responsibility to work on their vehicle safely. But the bookshelf inside my brain that is labeled "How To Work Under A Truck Without Getting Mashed" is mostly empty. And I see a lot of people show up here (myself included) in the same predicament. We want to work on our 4runners and we are in search of any knowledge that pertains to this — including basic safety.

I've noticed that this forum seems to have a lot of people who pay close attention to detail and who admire quality over all else. People like that usually have a good eye for safety too.

So any and all thoughts or personal experiences on this subject are appreciated.
 
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Couple of basics, and things that I do...

Jackstands- just buy a set from a reputable manufacturer and you will be fine. 2 tons may not give you the height you need for a 4runner, bigger stands will give you more working room, safely. I use the 2tons to support my axle, for example, when installing springs.

Always place the jackstands on the frame. The factory jacking points are usually a good spot.

I always try to slide one or two of the take-off wheels under the 4Runner- just in case, lol

Where safety goggles! There is nothing worse than getting rust/muddy crap in your eyes while under the truck, then you inevitably forget where you are for a second, jump up and pound your forehead on the muffler...

my .02 fwiw
 
A good pair of both 3 and 6 ton jack stands, the latter for lifted 4runners. If they are locking such is even better. Chocks are a must when on two wheels.

A good working jack. If there is any doubt of its capability, get another one.

Good eye protection but not some over priced piece of eye wear. If it scratches, get another pair. Also disposable nitrile gloves and a good work light (still love my Dewalt DC527) help.

Be aware of what is above you, thus how much mobility you have under your 4runner.

Lastly, if you have a gut feeling it isn't the day, don't get under it and punt. There were be more days to be under the 4runner.
 
I can't add much that hasn't already been said. A good jack, some jack stands and ramps are must haves. Safety glasses, and ear protection (if grinding or cutting), and I go thru a ton of rubber/nitrile gloves.
Never trust the jack to hold up the truck, always use a jack stand, on a solid spot. Always chock the wheels that are on the ground. I try not to get under something that would cut me in half if it fell, but sometimes you can't help it.
I won't share all the really unsafe stuff I've done over the year LOL
 
Ah, the joys of having a lifted 4Runner.

I literally, don't have to jack my 4Runner up to work on anything, except to change tires. I actually need to pull my valve stems in my tires to get it to where I can *almost* comfortably work in the engine bay. Lol.

Wheel chicks are a definite. A damn good jack. I've had mine for 6 years and it's still going strong. Granted, I can't use it for much, but it's still there.

I wish I would've gotten a jack that has a good range. As I sit right now, I can only lift the front tires about an inch off the ground. That's enough to change them, but it still sucks.

You obviously don't have to worry about a low profile jack, so find one that goes up a good bit. For now, you'll be ok with 3 ton stands, but be ready to get more that are taller, or be able to make some.

The easiest way to lift the rear us by the axle, and as Your stands will still sit under the axle without the tires on the ground, you'll be good there.

I lay under the axle all the time, on stands of course, when taking out the diff. Just make sure you're not kicking the stands.

While people say to wear glasses, personally, I can't stand to just drives me crazy. I just move my head, or position the wrench so nothing falls on my face, or, if it does, I deal with it. The worst was when I dropped a tank and got gas in my ear. That. Freaking. Sucked.


So, good long range jack, 3 ton stands for right now, but plan on getting bigger ones later.

Ramps are good for oil changes and stuff like that, if you can't get under the truck yet.
 
All good advice above. I use mainly one set of 6-tons and one set of 3-tons. The 2-tons I have are too short to do any good on the 4Runner except for axle support; they get used on the 3-series and the Accent.

The only thing I would add is use good judgment about the surface you are on. Should be flat, level and hard, solid concrete. Asphalt, especially in warm weather, can be a risky surface for jack stand support. If you have to work on asphalt, put down a plywood or metal sheet to avoid tipping...which can be very bad.
 
[MENTION=96939]SweetWaterSurprise[/MENTION]

You mean these wheel chicks? ;)

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^ :amen:
I would agree with everyone else here.
Never get under the truck or anything if its on a jack and not jack stands.
Always chock the wheels, I have had a vehicle roll backwards and off the jack because I didn't chock the wheels.
I have used those shorter 2 ton jack stands and honestly buy the taller 6 ton stands nothing like really putting some torque on a bolt and the truck starts to move a wee bit cause those 2 tons are at last notch.
Eye protection for me anyways. It is a personal preference just like using latex gloves, I always were safety glasses but would never put on latex or which ever gloves just because for me I loose feel of what im doing and I haven't gotten cancer yet so again its a personal thing what you want. But like Doc2021 said gas in the eye is, well I would just rather get man berry kicked for an hour gas in the eyes blows.
One thing I learned when I was younger was to test the vehicle before getting under it. Put it up on stands and give her a good old shake make sure its not coming down with a small bump.
Hot asphalt can be a bad thing to, the stand will sink into the asphalt.
Find a good possibly high lift floor jack, I try to not use the bottle jack that comes with the runners unless I have an emergency. Because hauling around a heavy floor jack is to me a waist. While you are working in the garage though with a good jack the amount of swear word reduction... factor 5 or higher. serious.
Hope this helps some. Again this is just my sort of routine when I work on my rides. That and maybe keeping beer consumption to well below making foul ups or something unsafe. Not saying no beer just not hold my beer and watch this, hardly ever ends without a trip to the hospital or moorage.
 
I think there is something special about 4runners that just makes a man feel like it's a truck worth saving — worth improving upon even.

Perhaps it's the general sense of quality and craftsmanship that went into these trucks at the factory. Or maybe the timeless good-looks that many modern trucks simply can't match. For me, it's both that make this older truck a real keeper.

No matter our motivations, there are plenty of people wanting to get in there with grungy hands to dig around amidst a 4runners rust and grease covered metallic guts. Absently smiling in anticipation of wielding hand tools like a surgeons bloody scalpel while wrenching out the cancerous decay caused by time, elements and neglect.

Ah...but anyways...

That was deep bro . :smokin:
 
Should we use more than two (stands) whenever possible?

Redundancy is your friend. You can't have too much holding up the truck.

I want more than one support between me and the truck at all times.

When I have it up on 4 corners to lube the drive shafts (so I can rotate them), I have an extra pair of stands to move around as I move around under the truck. 6 stands total.
 
I have three sets of stands, 2ton 3ton and 6ton. The 2ton and 3ton stands are this style with the ratcheting stem and release lever. I use them for holding up axles and control arms and such, but I would never trust the weight of the truck to one.

My 6ton stands OTOH are pure beef. They look something like this but instead of the single pin are held up by a U shaped pin that goes through two holes in the stem and body of the stand. If a wheel is coming off, one of these is going under the frame to support the weight of the truck. I don't remember where I got them and I wish I could find another set, but it seems like all you can find now are the ratcheting style, and I just don't trust those as much.
 
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I'm bumpig this because I want opinions on putting sections of 2x6 under jacks stands on asphalt or will the weight split them? OP I question assumption 4 under basics: do you have incontrovertible evidence that being dead sucks? There is growing anecdotal evidence from NDE's (and some of my experiences at GD concerts) that maye it doesn't.

And [MENTION=76419]Doc2012[/MENTION] those wheel chicks are nice but for a 5000 pound runner you need the beefy burly wheel chicks. No jacks or stands needed. Just put one at each corner of the truck and give the lift command.
 

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...OP I question assumption 4 under basics: do you have incontrovertible evidence that being dead sucks? There is growing anecdotal evidence from NDE's (and some of my experiences at GD concerts) that maye it doesn't.

Incontrovertible proof? No.

I was only stating what I personally know to be truth, but just about everything we know about being dead is anecdotal — including my long-held belief that being dead sucks. In fact, the last guy I killed didn't seem too happy about it either...

And dude, please tell me that last pic of the beefy-blonde-meathead chick is photoshopped! Sooooooo nasty. :barf:
 
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Incontrovertible proof? No.

I was only stating what I personally know to be truth, but just about everything we know about being dead is anecdotal — including my long-held belief that being dead sucks. In fact, the last guy I killed didn't seem too happy about it either...

And dude, please tell me that last pic of the beefy-blonde-meathead chick is photoshopped! Sooooooo nasty. :barf:

Well I'm not quite ready to find out personally so I'll just have to take your word on it.

About the last chick, come on, admit it. Just for a second, you thought about it... lol
 
Take it by the pressure wash bays with a big ol spray bottle of simple green and hose off the under carraige every few months, working on a clean truck is much more fun than working through grimy shit.
 
About the last chick, come on, admit it. Just for a second, you thought about it... lol

Indeed — I'm human! I thought about it in the same way I've thought about what it would be like to lay down in front of a steamroller or jumping into a wood-chipper — feet first...
 

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