If you've noticed your tranny slipping or shifting like a bag of bricks lately, this might be time for you to start shopping intended for a nag1 rebuild kit prior to you end up stuck on the shoulder of the road. The NAG1—also identified as the WA580 or maybe the 5G-Tronic—is the legendary piece of machinery. You'll find it in many methods from old Mercedes-Benz sedans to beefy Joker Chargers, Jeep Great Cherokees, and actually Sprinter vans. It's known for being hard, but even the particular best gearboxes eventually succumb to heating, high mileage, or even just the pure stress of daily driving.
Selecting to rebuild instead of replace can conserve you a hill of money, but you really have in order to know what you're looking for. The transmission rebuild isn't exactly a Weekend morning oil change; it's a deep dive into typically the guts of the driveline. If you're going to go by means of the trouble associated with pulling that heavy hunk of steel out of your own car, you want to make certain the parts you're putting in are going to last.
What's Actually Inside a NAG1 Rebuild Kit?
When you start searching for a nag1 rebuild kit , you'll observe that they will aren't all developed equal. Some are basic "refresh" products, while others are usually "master" overhaul sets. If you're carrying out a full teardown, you certainly want the second item.
A standard high-quality kit usually features a full set of scrubbing plates. These are the "bread plus butter" of your transmission. They're the particular discs that get onto each other to change gears. With time, the friction materials wears down, will get glazed from temperature, or simply flakes off into the particular fluid. Alongside all those, you'll obtain the steel plates. Some cheaper kits leave the steels out, assuming your old types are fine, but I've always experienced that if you're already in right now there, you may as properly replace them. Bended or heat-spotted steels will ruin brand-new frictions in no time.
Then you've obtained the overhaul seal set. This consists of just about all the "soft" components: O-rings, lip closes, metal-clad seals, and the paper gaskets. Inside a NAG1, the internal seals are crucial. If an O-ring gets brittle and starts leaking pressure, the clutch group won't apply completely, leading to—you suspected it—more slipping and eventual failure.
Las vegas dui attorney Shouldn't Give up on Friction Materials
It's luring to grab the least expensive kit you discover on a random auction site, but that's a risky game. The NAG1 is sensitive to the type of rubbing material used. Most pros and fans swear by brands like BorgWarner or even Raybestos.
BorgWarner was usually the original equipment producer (OEM) for these parts, so staying with them is usually the safe bet with regard to a smooth, factory-feeling shift. However, in the event that you've got a modified Hemi or you're pushing more boost by way of a Jeep, you might desire to consider performance-oriented frictions such as the Raybestos GPZ line. These types of are designed to handle higher temperatures and much more torque with no glazing over. It's all about how you use the vehicle. If it's the grocery getter, stock-style is fine. In the event that you're hitting the particular drag strip or even towing heavy a lot, spend the extra little bit of cash around the heavy-duty stuff.
The "While You're in There" Parts
One issue people often overlook when buying the nag1 rebuild kit would be that the mechanised clutches aren't constantly the only problem. The NAG1 includes a few "famous" failure points that aren't usually included in a standard clutch kit.
First up is the conductor dish. This is the plastic item that sits upon top of the particular valve body plus houses the velocity sensors. It's well known for failing and throwing the vehicle into "Limp Home Mode" (where you're stuck in second gear). If you're rebuilding the trans, it's almost a crime to not place a fresh conductor plate in as the valve body is usually out.
The second thing will be the 13-pin connector plug. These are well known for leaking ATF. The oil can actually "wick" up the wiring use and get in to the transmission handle module (TCM), which causes all kinds of electrical spirits. Most good kits won't include this, so make sure you include one to your cart. It's the ten-dollar part that may save you a thousand-dollar headache later.
Is This particular a DIY Work or In the event you Contact a Pro?
I'll be truthful with you: rebuilding a NAG1 isn't for that faint associated with heart. It's nothing like an old 3-speed Turbo 400 exactly where you can just stack parts plus hope for the best. The tolerances are tight, and you'll need some specific tools, like snap ring pliers that actually reach deep into the particular drums and probably a few home made presses to obtain the return spring suspensions compressed.
That said, if you're organized and have got a clean workspace, it's totally possible. The greatest tip I actually can give anyone using a nag1 rebuild kit for the first time is in order to take photos associated with everything as it comes apart. There are a lot of little check balls plus springs inside the particular valve body that love to go rolling over the garage floor the second you open it up.
In case you aren't comfortable doing it internal work, some guys will pull the transmission themselves and take it to some local shop with their chosen rebuild kit. This can save you a lot on labor, though a few shops won't offer a warranty in case you provide your own parts. It's well worth a phone call to check.
Signs Your NAG1 is Ready for a Rebuild
How do you know in the event that you really need a nag1 rebuild kit or in the event that you just need a fluid switch? There are some "telltale" signs.
- The "Rumble Strip" Shudder: If this feels such as you're driving over rumble strips whenever the torque converter should be locking up, your converter clutches might become toast. A rebuild kit helps, yet you'll likely need a new rpm converter too.
- Delayed Wedding: You shift into Commute or Reverse, plus there's a two-second delay before the car actually moves. That's usually the sign of low internal pressure or even worn-out seals.
- Black, Stinky Fluid: Pull the dipstick (though many NAG1s require you in order to purchase a separate dipstick tool). If the particular fluid appears to be coffee and smells like burnt toast, the chaffing material is gone.
- Slipping Below Load: If the motor RPMs go upward however the car doesn't accelerate accordingly, the particular clutch packs are slipping. This will be the classic "I need a rebuild" scenario.
Wrap Everything Up
At the end of the day, a nag1 rebuild kit is definitely an investment in the longevity associated with your car. These types of transmissions are actually incredibly stout once they're freshened upward with quality parts. Many people discover that after a correct rebuild with better-than-factory frictions, the vehicle actually shifts better than it do the day it rolled off the lot.
Don't rush the procedure. Do your research on the friction brand names, make sure you've got a new filter and a lot of the proper ATF +4 (or the particular specific Mercedes specification fluid your year requires), and spend some time. There's a certain satisfaction in getting a transmission that will was destined for the scrap yard plus making it run like new again. Plus, your wallet may definitely thanks to not buying a whole new vehicle just because the few O-rings and clutch discs offered up the cat.