Auto Maintenance & Repairs How-Tos

How To: Repair a minor windshield leak from the side mirrors on an LLV postal truck

Unless the windshield is obviously cracked, there are only two other possible causes to a leaky windshield. One is from the seal around the whole glass, because it's broken or worn by age, and the other is the more common culprit on LLV postal trucks, and that's where the side mirror bolts on. This is is hard to see without a mirror and flash light, but check it before you replace the windshield, because if it's the source of the leak, you'll still have a leak even after replacing the windshi...

How To: Replace the left (non-driver's side) windshield wiper pivot on an LLV postal t

Unlike other automobiles, the LLV (Long Life Vehicle) postal truck is driven on the right side of the vehicle, not the left. This can complicate repairs for any mechanic if they're not familiar with these trucks which carry mail across the country by the United States Postal Service (USPS). One repair that isn't easy is replacing the windshield wiper pivots. Actually, the driver's side (right) wiper pivot is pretty easy, but the left side is quite a chore. If the one's you're working on are w...

How To: Replace the rear cargo door roller track on an LLV postal truck

The rear door track is a must-have for postal workers on their LLV postal trucks. If they can't open the back cargo door, how would they get us our mail? So, when dealing with a broken cargo door track, this video will help you replace the roller track, which is actually quite easy. The United States Postal Service (USPS) uses these "Long Life Vehicles" for almost all mail deliveries! If you have another problem, check out the other LLV videos.

How To: Diagnose an electrical problem with a fuel pump on an LLV postal truck

If you're working on a LLV postal truck, this video will show you how to determine if you've got a bad fuel pump or not. It's a quick diagnosis trick to determining if there's an electrical problem with the fuel pump, and first you need to take out the ECMB fuse, plug a jumper wire where it was, use a multimeter and labscope to see what's going on. The United States Postal Service (USPS) uses these trucks for all their postal deliveries, and if you're the mechanic working on it, this and the ...

How To: Remove and replace the valve body for a Toyota A750E/F or AB60E/F transmission

If you need to replace your valve body on your transmission, this video tutorial will show you how simple it is to do yourself. This focuses specifically on the valve body replacement of the Toyota A750E or A750F model transmission, and can also be applied to the AB60E or AB60F transmission, which can be found in vehicles like the Tundra, FJ Cruiser, 4Runner, Sequoia, and more.

How To: Avoid using bad flywheels for an LLV postal truck

When replacing flywheels on an LLV (Long Life Vehicle), which is a postal truck used by the United States Postal Service (USPS) and made by Grumman, always look for the quality of the new flywheels ordered. Just because they're new doesn't mean they're good. The ring gear can sometimes be welded off-center to the plate, which will make the starter teeth grind the new flywheel. If you don't want to replace the fly wheel a second time, watch this video to see how to spot check them.

How To: Fix a transmission leak at the speedometer drive gear on an LLV postal truck

A common problem for an LLV postal truck is a transmission fluid leak at the speedometer drive gear on the side of the transmission. This video will show you how to repair this transmission leak at the seal. LLV stands for the Grumman Long Life Vehicle, which the United States Postal Service (USPS) for all mail delivery. More than likely, it's an O-ring problem (speedo seal) where the speedometer cable attaches.

How To: Replace a control arm on an LLV postal truck or Chevy S-10 pickup truck

The control arm on a Grumman Long Life Vehicle, or LLV, postal truck (used by the United States Postal Service (USPS)) is exactly the same as the control arm on the Chevrolet S-10 pickup truck, so the replacement procedure is almost identical. This video will show you that procedure, but it's important that you get the right part for the side you're replacing. The LLV is right-side steering, so the driver's side is the passenger's side on the S-10. It's a little confusing, so be careful.

How To: Troubleshoot the dashboard gauges on an LLV postal truck

The United States Postal Service (USPS) use what's called a Grumman Long Life Vehicle, or LLV, for their postal trucks. This video will show you how to troubleshoot the dash gauges in an LLV that are acting crazy. If you;re a mechanic and you have the same sort of electrical problem with the gauges when using turn signals or hazards, this video will help you find the solution, which could involve the parking brake.

How To: Fix a plugged up air conditioner drain hose on a Jeep Liberty

A common problem on Jeep Liberty SUVs involves the passenger side carpet getting wet because of the air conditioner drain hose being plugged, where the condensation water is supposed to drain from. The drain hose sticks out about an inch inside the engine compartment, and is relatively easy to access. All you need to do is use a wire, at least six inches, to probe into it and release and buildup. You can also blow air into the hose. Watch and learn this simple A/C repair trick.

How To: Replace the spark plugs on a 2006 Ford Escape SUV

Most do-it-yourself mechanics are afraid to touch newer model cars and trucks, even when it comes to changing spark plugs. This video will show you the process of replacing the spark plugs on a 2006 Ford Escape. The front three spark plugs are easy to get to, but the back three are underneath the intake, so you will have to remove that for access. But don't worry… there are no special tools required for this job.

How To: Remove and replace a front wheel bearing on a 1991 Ford Explorer

A wheel bearing doesn't have to be a costly fix for the mechanic. It could be a relatively cheap repair job for all you do-it-yourselfer types. There are different types of wheel bearings, but the type explained in this video, on a 1991 Ford Explorer, is a self-contained all-in-one assembly. If you have a '91 Ford Explorer, or a different vehicle with this kind of wheel bearing, then you're in luck… watch and learn.

How To: Install a camshaft sensor and/or synchronizer on a 1998 Ford Windstar 3.0L

This vehicle covers a 1998 Ford Windstar 3.0L which came into the shop without the chief complaint being it was stalling and running bad. After the scan, they got a code P0340, which is a cam sensor fault. The problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM. Watch and learn to see how to install a new camshaft sensor and/or synchronizer.

How To: Use a shortcut to quickly remove a heater core on a 2001 Ford Taurus

When working on the dashboard of any vehicle, make sure you disable the vehicle's airbag system first. Your service manual should tell you how to do that. In this video, the heater core is plugged up in a 2001 Ford Taurus, which means it needs to be taken out. The book states it will take 5 hours to complete, mostly because of the dash. But this trick will cut the time down to 1.5 hours. First, get you heater hoses off in the engine area. Then proceed to watch a mysterious bracket being cut o...

How To: Quickly test the functionality of a coil-on-plug system in almost any vehicle

Working on a coil on plug system can be pretty frustrating for mechanics. So, if you're trying to diagnose a no-start or misfire, how do you know if that spark plug coil is firing? Is that even your problem? This video will show you two methods for troubleshooting the misfire problem. The first quick little test involves a coil-on-plug adapter (tester). Keep watching for the second method. This works for almost all vehicles.