Dave needed to remove our watermaker pump so that he could rebuild it (basically, replace the seals).
As anyone who has ever tried to remove anything on a boat knows, one of the four bolts was seized. And that was the one that was impossible to get to. Of course.
Usually, a seized bolt will give way after letting some PB Blaster soak in for a while (we find PB Blaster to work a little better than Liquid Wrench). Dave sprayed and sprayed, even using a little straw thing to direct the spray, but he just couldn’t get the PB Blaster right to the nut in question.
Looking for anything that might help, he finally hit upon an ingenious solution: a syringe. We had several of these for squirting epoxy into some holes — and always have some in Paz’s bag as well, in case we need to give her some medicine.
Dave sprayed some of the PB Blaster into a small cup that he repurposed from the trash and then sucked it up into the syringe. Then he was able to use the syringe to squirt it right on the nut and the joint with the bolt. Fifteen minutes later, after it had time to soak in, he was able to get that last nut off.
Sometimes you can find needleless syringes at the hardware store or home improvement stores — once in a while you can find them in a pharmacy, too, but they tend to be much more expensive and some states require a prescription. Marine stores also usually carry them, also usually at significantly higher prices. I usually buy them on Amazon as they are much cheaper.
As I was writing this, Dave told me we needed to get more PB Blaster. Turns out that right now, Amazon has PB Blaster (the penetrating variety which is what you need for loosening seized nuts and bolts) at a great price PLUS a “coupon” for $2 off — click on the coupon button and you’ll see the discount when you check out (and free shipping if you have Prime):