How to adjust boat trailer bunks

This step requires you to start in the front of the boat trailer. Using your picture as reference the bunk needs to be to the right more so the riser is sitting just inside the bunk and the hull is resting on the on the bunk.

There is a plastic slide piece between the bunks but it doesnt look like it ought to support the boat.

How to adjust boat trailer bunks. Step 2 Adjusting Your Boat Trailer Bunks. Once you are happy that your boats keel is resting on your boat trailers keel rollers it is time to make the adjustments to your boat trailer bunk brackets and hardware. With your boat resting on your keel rollers you should be able to make changes to your boat trailer bunks without removing the boat from your trailer.

To adjust boat trailer bunks I recommend starting on the front section. Loosen the screws that secure the boat bunk brackets and move them upwards until they rest on the hull. Fasten the screws with a torque wrench noting the amount of force specified by.

Nevertheless theres a general guide. The trailer bunks should be resting about 13 from the bottom part of the boats hull. This step requires you to start in the front of the boat trailer.

Raise the brackets by loosening them so the bunks will lie on the boats hull. Start at the most forward point of the bunk raise the bunk until it touches the bottom of your boat and tighten until the bunk is in place. Repeat this step moving down your trailer until all of the bunks are touching the bottom of your boat and are secured in place.

Watch the boat coming up the trailer and make sure the bottom is clearing the frame and fenders and the bunks are positioned flat against the hull. If bunks require left or right adjustment see Picture 2 belowStop pulling the boat up when th back or transom of the boat lignes up with the back end of the bunks. How do you adjust trailer bunks to fit a boat.

Start at the most forward point of the bunk raise the bunk until it touches the bottom of your boat and tighten until the bunk is in place. Repeat this step moving down your trailer until all of the bunks are touching the bottom of your boat and are secured in place. Click to see full answer.

After installing everything go over to check if everything was properly installed. Make sure that braces and brackets are all fitted tightly. If everything checks out load the boat onto the trailer for the final adjustments.

Check to see if the keel guides are placed properly. The boat should be resting on the bunks and the keel guides. Adjust the bunks so the chines on your hull are resting on the bunks.

Just like the image below. If your trailer is too narrow to get the bunks under the chines or if you dont have enough room between the keel and the crossmember to install the keel guides then its okay to adjust the bunks to rest under the outside set of lifting strakes. The general rule of thumb is to adjust either rollers or bunks as low as possible and still keep the boat free of fenders and or the road.

In particular the stern bunk adjustment normally will always be lower than the bow bunk adjustment. Your bunks should be spaced identically off of the center line of the trailer. How To Adjust Your Boat Lift Bunks ShoreMaster Lifts - YouTube.

When i take the strap off the boat rolls to one side and there is approximately a 15 gap between the boat and the bunk on the other side. The boat is raised up above roller 1 and not touching it so that currently is serving no purpose. The boat is dug deep into roller 2 and slightly into roller 3.

I assume I just need to lower roller 2 until the boat rest on roller1 and. If youre happy with the keel of the boat resting on the keel rollers properly adjust the bunk brackets along with the hardware. With the boat resting on the rollers adjust the trailer bunks but without removing the boat from the trailer.

Generally the bunks rest about 13 up from the hulls bottom. However this may also vary from one manufacturer to another. Adjust the bunks if your boat is setting on the keel but is tipsy on the trailer.

Use your adjustable wrench to loosen the bolts that hold the bunk supports in place on the trailer. Raise the forward end of the bunk until it touches the. When you set up your boat on your trailer it will need to be adjusted with a nose up or keel up angle ie.

The boats keel needs to be set higher at the front than at the rear. This will allow the hull to roll off your trailer quickly and easily. Adjust the bunks if your boat is setting on the keel but is tipsy on the trailer.

Use your adjustable wrench to loosen the bolts that hold the bunk supports in place on the trailer. Raise the forward end of the bunk until it touches the bottom of the boat and tighten the forward-most bolt. If the boat sticks out beyond the bunksrollers then move the rear pivot adjustment to the B-position.

Once the rear pivot horizontal adjustment has been set determine if the vertical adjustment should be in the 1 or 2 hole position. Check the fender and crossmember clearance - these should be no less than 34. Here I will briefly show you the process for building new boat trailer boards or bunks and carpeting them.

Click the Show More button for more infoIf you ar. How to Fit Boat Trailer werdna. Im confused about your statement about the bunks.

If they dont support the boat what does. My little boat trailer has bunks on pivots aft and only one roller midway forward for my 12 aluminum boat. There is a plastic slide piece between the bunks but it doesnt look like it ought to support the boat.

Unless a trailer is specifically built for a specific boat attach bunk systems either roller or bunk style to the framework of the trailer with adjustable mounting brackets. To a degree the brackets enable you to raise lower or move the bunks side to side and enable you to adjust the angle of the bunk to match the sloped bottom on a V-hulled watercraft. This is ok and you may not have to adjust the trailer at all to fit your boatthe rollers are really there to keep your keel from contacting the trailer during launchingloading operations.

For the rollers to act as rollers like you had you would have to raise the rollers to lift the boat off the bunks and then it rolls off. Using your picture as reference the bunk needs to be to the right more so the riser is sitting just inside the bunk and the hull is resting on the on the bunk. How is your tongue weight it should be 150 - 200 pounds.

If the boat is sitting too far back the tongue is going to be too light if too far forward too heavy.