Shop Press

Shop Press is the news and idea hub for everything related to working on cars and trucks, focusing on repair, technology, and wrenching lifestyle.

From the creative minds at:

FEATURE STORY

Hot Off the Press

What are Frits? (And Why Does Almost Every Car Have Them?)

It’s a pretty safe bet that most younger techs haven’t heard of frits before. Not one single customer, ever, has come into your shop looking for some help with a frit problem. So while this article won’t help you turn bays faster or improve your diagnostic skills,...

Cat DTC Diagnosis (P0420) – ASE Practice Question (VIDEO)

Description Technician A and Technician B are discussing the troubleshooting procedure for a P0420 (Catalyst Efficiency Below Threshold) DTC. Technician A says that the presence of any other codes should be considered first before replacing the converter. Technician B...

What Shape Is a Piston?

At this late date, if you work in a standard automotive facility servicing late-model vehicles, it’s probably infrequently you even see—let alone think about—pistons. However, if you are in a rebuild shop, a race environment, or the antique space, seeing a set of...

Cabin Filters – ASE Practice Question (VIDEO)

Description Technician A says that cabin air filters protect the occupants from over 200 known contaminants found in a typical car’s passenger compartment. Technician B says that the cabin air filter protects the evaporator core from copper particles emitted by the...

Should You Replace That Damaged Plastic Intake Manifold?

It seems like plastic is everywhere under the hood of a modern car. You even have to remove a plastic cover to find the engine! But plastic and composite parts like distributor caps and ignition coil housings have been in use for over 100 years. In the 1970s,...

Politics Ain’t Politic

Red, blue, or green? You’ve pieced together the point of this article by now, no doubt. This will not be a piece that risks raising the hackles of those who are deeply political. That’s not because you’re encouraged to avoid the topic, but instead, to do what makes...

Belt Noise – ASE Practice Question (VIDEO)

Description Technician A says that "chirp" is the most common type of noise complaint customers bring to the shop. Technician B says that EPDM belts can be worn out yet pass a visual inspection. Who is correct?A) Technician AB) Technician BC) Both Technician A and BD)...

The easiest way to remove a cotter pin (VIDEO)

by | Dec 15, 2021 | 9 comments

Description

​For the longest time I used to remove cotter pins with either a hooked mechanic’s pick or a pair of needle-nose pliers. And when I say a long time, I mean, probably 15 years. Then my friend Zito showed me a better way. I’ve since seen others use this method, but I didn’t know about it, and it seems anyone I show is either amazed or doesn’t know any other way to do it: use diagonal pliers.

The loop in the head wedges itself in the vee of the pliers and the harder you tug, the more it seats itself. You also have excellent leverage if you rock the diagonal pliers against the item holding the cotter. Since the pin is too thick to be cut (unless you are Superman), the pliers just score up the pin. Since the pin will be replaced anyway, the damage is inconsequential.

After trying Zito’s way once, I was hooked. I can’t even think about how many wheel bearing services I performed, needlessly fighting cotter pins. Try it out if you haven’t.

Cotter pins

Who knew removing cotter pins was so easy? I guess everyone but me. Photo by Lemmy.

Related Videos

Troubleshooting Fuel Trim–ASE Practice Questions (VIDEO)

Technician A and Technician B are discussing ways to use fuel trim as a troubleshooting aid. Technician A says that fuel trims that are correcting for a lean condition at high RPM and load conditions indicates a problem in fuel delivery. Technician B says that this condition is caused by a vacuum leak.

Misfire Cause–ASE Practice Questions (VIDEO)

Technician A is diagnosing a misfire. He states that a misfire is caused by a fault in the ignition system and that new plugs and coils will repair the problem. Technician B says that a misfire is detected when the ECM detects a variation in crankshaft speed.

The articles and other content contained on this site may contain links to third party websites. By clicking them, you consent to Dorman’s Website Use Agreement.

Shop Press Comment Policy

Participation in this forum is subject to Dorman’s Website Terms & Conditions. Please read our Comment Policy before commenting.

Subscribe
Notify of
guest
9 Comments
Newest
Oldest Most Voted
Inline feedback
View all comments