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Failure Is a Learning Experience | The Mindset of a Slope Engineer
Hello, everyone. This is Enta. Things are about to get busy, so we’re performing inspections and maintenance on the machinery that will be used at that site. Among the team, there are some people who are performing maintenance on this machinery for the first time. If someone who knows the process can teach them, there’s no problem at all, but in a situation where they’re completely unfamiliar with it…
Grease Areas You Don't Usually Grease | Maintenance Tips
Hello, everyone. This is Enta. The other day, I was servicing my Spring Drill. Only the rear chain keeps getting loose. So, I asked the manufacturer, and they suggested that the bearing on the front sprocket (the chain gear) might not be moving smoothly. So, I took it apart...
There Are Always Warning Signs Before a Machine Breaks Down | Maintenance Diagnostics
皆さんこんにちは。 エンタです。 最近機械トラブルが多いです。 と言うのも、忙しくてろくに整備出来ないまま現場に次々に出て行くので整備が追いつきません。 先日もある現場でパーカッションが壊れ皆さんにご迷惑を掛ける事になってしまい申し訳無い気…
Teaching Maintenance Skills to Technical Interns | Training Foreign Workers
Hello, everyone. This is Enta. The other day, I was teaching the first and second cohorts of Vietnamese trainees how to disassemble a machine. It’s an MG-15 pump. We received a unit that’s pretty worn out, so we’re giving it a complete overhaul lol. Normally, either I or another employee would…
One of the Largest Combination Wrenches | Large Tools
Hello, everyone. This is Enta. The other day, I bought the largest combination wrench we have. As you can see in the photo, it’s a 55 and a 52 (the size isn’t visible). The wrench is on the left, and the open-end wrench is on the right. This is a combination wrench, commonly known as a “con”…
Grout Mixer Maintenance and Full Restoration | MS-600B Case Study
Hello, everyone. This is Enta. The mixer I’ve been working on since last week is almost finished. It’s the MS-600B model from Toho Chika Koki Co., Ltd. It was in terrible shape, but I’ve fully restored it. I kept the parts that were still usable and replaced the faulty ones, preserving the original…
Grout Mixer Repair | Unusual Bearing Noise and Seal Deterioration
Hello, everyone. This is Enta. The other day, as a way to escape reality, I was fixing a grout mixer all by myself at the office. (I’ve got five quotes for this, though… lol) I checked for a crack in the pulley and unusual noises coming from the bearings, then started taking it apart. It’s used for grouting…
Rotary Percussion Cam Follower Maintenance | Fixing Play
Hello, everyone. This is Enta. As the end of the year approaches, things are getting busier and more hectic. Please be extra careful at work. But enough of that... The other day, a large rotary percussion machine was returned to us. When you shake the hammer section, it goes “ga…”



