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 | Backlap valve |
The micro-backlapping valve is standard equipment for those who prefer to backlap the cutting units on the machine to maintain a sharp edge on the reel and bedknife. A regular schedule of backlapping will provide sharp edges longer for a better quality of cut and extend time between grindings. This will result in longer life of the reel and bedknife due to less material being removed than from spin grinding. A ground reel and bedknife should always be backlapped after grinding anyway to match the reel to the bedknife.
The backlapping circuit is easily engaged by pulling up on the yellow knob to reverse directional flow, spinning the reels backward for backlapping. A safety interlock circuit allows backlapping with the parking brake engaged and no one in the seat.
The backlapping valve is a pressure-sensing-flow compensating valve. As backlapping compound is applied, this creates a restriction between the reel to bedknife, and this restriction tries to slow the reel down. However, the pressure-differential valve senses the added pressure and automatically compensates with flow. This works at any reel speed other than full speed.
This feature also works in the mow position, which is critically important when mowing at higher heights of cut when reels must be slowed down to prevent fanning of the grass. When the cutting unit encounters lusher and denser turf, the reel would naturally want to slow down, but the backlap valve compensates with additional flow.
The backlapping valve offers reel speed control with a rotary dial. Reel speed can be controlled in both mow and backlap. Setting six is for full flow, while setting one is used for backlapping.
The backlapping valve on the 2653B PrecisionCut is the same as those used on the PrecisionCut Fairway and 2500B PrecisionCut Riding Greens Mowers.
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| | | Last Updated : 06-Apr-2010 |
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