My tub is stopped up

Generally access to both sides of sanitary fittings is required, whether at home or in a caravan, in order to removed such things as taps or wastepipe connectors.
If you manage to remove it from one side only it is virtually certain you won't be able to put it back or if you can it is likely to leak and store up trouble for the future.

I suggest you check with the manual or contact the manufacturer or dealer for information.
If the manufacturer hasn't provided access to the traps and drains under the tub or tray the tub or tray will need to be lifted or removed and resealed when refitting.

Good luck!

Assuming you have a lever operated tub stopper, with the lever mounted in the overflow plate, a common malady is the decay of the internal end of the lever, leaving the stopper at the bottom of its pathway preventing drainage.

remove the overflow plate and carefully slide the stopper assembly out of the overflow... you will know almost immediately if the assembly has come apart. if its intact, run a small diameter sewer snake down the open overflow to clear the tub's drain trap. if it has indeed come apart, remove the connecting rod and stopper from the overflow, you may have to fish for it some. Happy hunting....

reassembly is simply reversing the removal process once you have replaced any broken parts or cleared the trap.

Hi Mary,sounds like your drain stopper may not be closing tight.Try removing the stopper by turning it counter clockwise,then jam a small rag in the drain as tight as you can to stop the water and fill the tub.If it still leaks then the drain plug where the stopper goes may have to be re-sealed or one of the jets may have a leak.If the tub is over a ceiling do not keep re-filling the tub you will cause major water damage to the rooms below.

follow this steps and fix it. God bless you
lear a clogged (not stopped) sink or bathtub with a plunger:

1. If you have a dishwasher, pinch off the rubber dishwasher drain hose that leads to the garbage disposer using a clamp or locking pliers. If clearing a bathtub, remove the drain stopper and cover the overflow opening with a wet rag.
2. Remove the sink basket or tub stopper and clean any debris from the drain opening.
3. Fill the sink or tub with sufficient water to cover the plunger cup, usually about 2 inches. If you are working on a double sink, seal the other sink with a stopper so the plunger can create a vacuum.
4. Set the plunger on the drain opening and repeatedly pump it up and down, then pull away sharply to dislodge debris. Repeat if necessary.
5. Turn on warm or hot water to flush loosened debris from the drain.
6. If the clog remains, use an auger (see below) or an expansion nozzle (see below) to clear the drain.

Clear a clog using an auger:

1. Remove the stopper or strainer. If unable to do so, disassemble the drain trap (see below) and feed the auger directly through the pipe. Make sure you have a pail and rags nearby in case of a water spill.
2. Release the setscrew on the auger and begin feeding the cable into the open drain.
3. Once the auger tip hits the clog, set the screw and crank the auger clockwise to break up the clog.
4. Continue breaking up the clog and moving it down the drain line with the auger. Once there is no more resistance to forward motion of the auger, stop and carefully remove the auger.
5. If the clog can't be moved, continue twisting the auger to possibly snag and retract the clog.
6. Once the clog is cleared, flush the drain with boiling water.

Does the tub have a lever to stop the drain below the spigot ?

Toe tap stoppers remove by just gripping the stopper and unscrewing it. Once the stopper has been removed the hair will be usually caught on the crossbar underneath the stopper where it can be removed with needlenose pliers.
Spring type stoppers for drains are just about as notorious for being hair catchers. Once again there is nothing to stop the hair from leaving the tub.

Spring loaded chrome stopper will not stay down to fill tub with water.

Tub, sink what?

under the decorative knob there is a screw,this is what holds the stopper in place.if not it should just unscrew.

If you have a popup/ plunger type drain stopper controlled by a lever at the overflow, then, yes, it would be a great idea to remove that. They commonly add to drain problems.

Remove the two screws at the overflow plate (the one with the lever for stopping the water). Be careful that the gasket between the tub and overfow does not fall out when you fully remove the screws. Pull out the stopper assembly. You may have to jiggle it somewhat. Clear your drain some more and run a little water in it. Then replace the stopper assembly, making sure to keep the overflow drain lined up as you screw the plate back in.

You may consider replacing a lever stopper with a "twist and twirl" type.

If you do not have a lever assembly then you may have to use a small hand held snake to clear out the drain