If so, and you're sure that that hose and fitting are the same size, then try putting the end of the hose in a bucket of hot water for 15 minutes. It should soften the hose enough to allow you to wiggle it all the way into the connector, and then do the nut up.
Good Growing Tip of the Week: For both aluminum and brass fittings you can also lubricate the threads with silicone grease to prevent corrosion and fusing of the fittings.
Use a couple of purpose built pipe wrench s. One on the fitting and one on the pipe you are trying to remove it from. Be sure the wrenches are orientated so that as you turn them their jaws are locking on the fitting/pipe. If this doesn't work, heat up only the fitting with a propane torch while wrenching on it.
The best way to soften it up is to put it in the sun, preferably with no water inside the hose. If you can get hot water to run through that hose, you can soften it up very quickly.
Stretch it out
With the hose still attached to the spigot, eliminate kinks by stretching out the hose as straight as you can. If the weather is below 35 degrees and the hose is stiff, let it sit in the sun for roughly 30 minutes to warm it and make it more pliable.
If you're hearing squeaking noises or having difficulty turning your valve handle, then extra lubrication may do the trick. Use plumber's grease to lubricate joints and nuts, making the faucet easier to use and reducing the wear and tear of moving parts.
Push the end of the hose over the end of the faucet—or the faucet connector, if one is attached. Then, twist counterclockwise until the hose is attached snugly to the faucet. Turn on the tap and check for leaks or drips—if you see any, you may need to tighten the connectors a little more.
What is the best lubricant to use on rubber parts? One lubricant that works well on rubber parts is silicone lubricant. This lubricant's versatility makes it compatible not only with rubber but with many other materials, including plastic, metal,wood and painted surfaces.
WD-40 Specialist® Silicone Lubricant safely lubricates, resists water and protects metal and non-metal surfaces such as rubber, plastic and vinyl.
You can use grease, vaseline, special anti-seize compounds with graphite dust in them, pretty much anything that helps the threads go together smoothly and keep them apart as much as possible. Another idea is to not use aluminum fittings.
Apply a small amount of oil (WD-40, or similar penetrating oil) around the O-rings and put them back in place. Reassemble the faucet handle and turn the water back on. Check to see that the faucet handle is now moving properly.
Q: Why do hoses get stiffer over time? A: It is true that hoses, particularly those made out of vinyl chloride, can become stiffer with continued use. Vinyl chloride resin is ordinarily a hard material often used in pipes.
It can be a little sticky at first and even get a little stuck to itself until you uncoil it completely and lay it flat out on the ground. It also will coil back up nicely after the initial break-in period. We recommend coiling the hose back up loosely and allow it to go back to its naturally circular state.
Heating in hot water will soften many hoses without overheating or burning.