Im sure you meant change the packing You never have to change the gland itself. Quote; Go to top ; Share this post. If the pump uses a flush injection and lantern ring be sure to remove the lantern ring and the packing below it. The selection of appropriate packing, the cutting methods like straight and angular, the means to extract the old packings, the standard sizes available commercially, length measurement procedure, Inserting procedure in the stuffing box, and the running in process have been described. All because of a stuffing box throwing water and the lack of an ounce of prevention that costs no more than $5.00 and a half hour of time. View Profile ... Any other unique tools I would need to repack the other box? Instead, get to the bottom of it! I've been told that anything over 120 degrees or so is too hot. A stuffing box separates the non-rotating parts from those that rotate. The stuffing box is the seal around a boat’s propeller shaft that keeps the water out and allows the shaft to rotate freely. The stuffing box is a critical part of the boat. Though you might have to change the tubes if they go bad from age. Link to post. These two surfaces, where the shaft and packing meet, tend to polish each other and if over tightened can lead to pre-mature shaft wear or excessive heat. 1968 38' Chris Craft Corinthian 1962 21' Grady White Atlantic. The importance of knowing the proper cleaning and packing procedures becomes evident during a shutdown event when you need to keep your pump running efficiently. Can you guys take a look at this site and tell me if that is pretty much what I am going to see on my boat? 04-23-2010, 01:26 PM #7. It is a reliable option to hold your packing seals and shaft as well as keep your pumping system from leaking. Lew Barrett. Ninety percent of all sailboats with auxiliary inboard engines have a flexible stuffing box with traditional packing gland that usually goes unattended until it … We don't often refer to it as a "stuffing box" but more commonly call it a "prop packing" or "prop shaft seal". For example, if the stuffing box you are packing has a pressure of 30 lbs., you need at least 50 lbs. I like to be able to keep my hand on the stuffing box without being too hot to touch. It looks like a pretty easy job....but I know the minute I say that. These units are often deep down in the boat, behind the engine and with limited access. It allows a driveshaft to spin through the hull without allowing water to pour into the vessel. You can add to the likely resulting damage rusted shaft/transmission couplings that will have to be cut off and replaced the next time you have to pull a shaft. In continuation with previous article it is a guide in the usage of gland packings. of flush water pressure minimum. Like the guys said just tighten it up until it drips about 1 drip a minute. Lew Barrett. A stuffing box that's cool at 2000 rpm might be too hot at 3500. stuffing box You said change the stuffing box right? 04-23-2010, 02:11 PM #16. Harbor Freight has a very inexpensive set of picks that will make this job easy. footnlongline 3 footnlongline 3 Crew Devotee; 3 … By the way, you need to take those readings at cruise rpms. Repacking equipment during a system outage is often performed under time constraints. I went online to find more information on how to repack the driveshaft stuffing box and found what I think is a good site with a very good graphical explaination. This particular stuffing box is a 1 inch box from a 1985 Catalina 36 and uses three rings 3/16 flax packing. In order to establish the proper flush set-up, you must know the pressures of the stuffing box and of your water line at the equipment. 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