SURF RAKe service


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Adjustable wrench


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what does the moldboard do?

The moldboard is the rounded shield in the front of the SURF RAKE. It serves several functions:

1. Deflects debris onto the conveyor belt to be removed from the sand:

Since the tines are combing through the sand very quickly, they fling newly removed debris forward in the motion they are going. The curve on the inside of the moldboard deflects the debris back onto the conveyor (as shown by the cup in the diagram above), and the tines carry the newly separated debris up to the hopper. 

2. Levels the cleaning area

A moldboard’s natural curve simultaneously levels the beach while riding over larger, immovable objects. Instead of hitting a submerged object straight on, like an ax hitting a log, the moldboard’s curve lifts the beach cleaner over the submerged object, while the spring-action tines simply flex over the object without being damaged.
Another great benefit of leveling the beach is that it creates an even plain of sand for the tines to then rake. This ensures that every part of the beach is cleaned thoroughly and evenly with equal tine penetration.

3. Controlling cleaning depth

Once the sand is leveled, the tines can clean the entire width of the machine to an even depth. Adjusting its height controls how deeply the tines penetrate the sand. When the moldboard is raised and the turnbuckles or cylinders are lengthened, more of the tines are exposed, and they will clean deeper into the sand. When the moldboard is lowered and the cylinders or turnbuckles are shortened, the tines will not dig as deeply into the sand.

4. Protecting the conveyor system.

By shielding the tines and conveyor belt from constant abrasion, the impact of the sand, and potentially harmful submerged objects, the moldboard protects the conveyor belt from many of the main damaging elements that most beach cleaners’ cleaning mechanisms are exposed to. Most sifting screens need to be replaced every year and tightened periodically, because they are the first component to hit the sand while spinning around the cutting edge. This proves annoying and expensive. The conveyor belts and tines on beach cleaners that utilize moldboards, however, tend to last many years.

how to adjust the moldboard

Depending on how your SURF RAKE is configured, the moldboard’s height can be controlled in two ways; manually, by tightening or loosening the turnbuckles, or hydraulically from the cab of the tractor.

To adjust a moldboard that is equipped with manual turnbuckles, you will need an adjustable wrench.

Begin by loosening the locking plate on each turnbuckle. To lower the moldboard, tighten the turnbuckle by hand so that fewer threads on the bolts are visible. To double check, you can view the moldboard from the side. A smaller portion of the tines should be exposed. Repeat the process on the other side and make sure both sides are set equally. When the desired height is reached, tighten the locking plates against the turn buckles to lock the moldboard in position.

To raise the moldboard, perform the same process, except you should loosen the turnbuckle so that more threads on the bolt are visible. When checking the exposed tines from the side, more of the tine should be exposed.

If adjusting a hydraulic moldboard, simply check to makes sure the hoses are plugged into the tractor’s hydraulic spools (and on the same spool) and raise or lower the moldboard using the appropriate lever in the tractor. The numbers on the cylinders indicate the moldboard’s level. When the indicator is at a 6, it indicates the moldboard is raises to the maximum, exposing the greatest amount of each tine and digging the deepest into the sand. When the indicator is closest to 1, the moldboard is as low as possible, and the smallest amount of each tine will be exposed.

To learn how to determine the best moldboard setting for your cleaning conditions, see Barber’s operation video.

Have more questions?

Contact a team member for additional assistance.