Garden

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

“Chasing weight” means the balancer continues to ask for more weight once the first weight is applied. At this point, the machine needs to be calibrated.
4. Regularly calibrate the balancer every three months or change of season.
To calibrate, you simply need to place a calibration weight on the pan and record the result. If it is within predetermined limits then no further action is required. If the result is not within limits then the balance should be adjusted to the value of the calibration weight.
This wheel aligner uses four precision cameras to measure the position and orientation of targets mounted to each wheel using Hunter`s patented QuickGrip™ adaptors. QuickGrip adaptors feature spring-loaded arms that grip the tire, eliminating metal-to-metal contact and subsequent rim damage.
Similarly, if you are using a balance that has not been calibrated, you may get inaccurate measurements of weight, which could affect the accuracy of your calculations.
The observed balance reading should be within +/- 0.1% of market value of standard weight as per USP 41 requirements. As per the mandatory requirements, a weighing balance should be calibrated on a daily, weekly and monthly basis.
Depending on the vehicle, a manual frame-to-vehicle pre-calibration can take upwards of 40 minutes.
Step 1: Making the Arrangements

This is the very first step of the entire process. Before you start the calibration of pressure gauges, make sure that the device is placed at a uniform level. The workbench should be stable for proper operation. Once you ensure this, attach the pressure gauge to the test port.

Calibration Coefficients Straight Line Fits

The standard formula of y = mx + b, where m designates the slope of the line, and where b is the y-intercept that is b is the second coordinate of a point where the line crosses the y-axis.

Thrust Alignment: A thrust alignment is the most accurate alignment for vehicles without adjustable rear suspension. Only the front wheels are adjusted. Here`s how: There`s no guarantee both rear wheels are pointed straight ahead as they should be. One may be pointed exactly forward and the other slightly off.
For a normal car you typically want to maintain a slight amount of negative camber (0.5 – 1°) to have a good balance of cornering grip, braking grip, and tire wear. On most vehicles it`s common to have slightly more negative camber (0.8 – 1.3°) in the rear to reduce the chances of oversteer (loss of grip in rear).
Hunter wheel alignment equipment is well-known and well-respected across the industry. It is used by hundreds of garages, including Protyre garages, and has a vast database consisting of specifications for 1000s of different vehicles.
First, find a smooth, flat, and straight stretch of road. Next, drive with a loose grip on the wheel so that you can tell if the car is pulling either way without you steering. While you are driving, listen closely to see if you can hear any scraping, whining, or grinding sounds because those could indicate a problem.
A Hunter 4 Wheel Alignment takes around one hour to complete – you can wait in branch or leave your car with us while it is performed.
Your mechanic will likely raise your car up on a hoist and use an alignment machine that has devices that clamp to the wheels. The machine is hooked up to a computer and your mechanic makes precise adjustments to a series of measurements to get everything perfectly aligned.
In practice, most calibration errors are some combination of zero, span, linearity, and hysteresis problems. An important point to remember is that with rare exceptions, zero errors always accompany other types of errors.
Metrology labs strive for a minimum 4:1 TAR. Simply put, this means that the standard is 4 times more accurate that the tool being calibrated. A test accuracy ratio of 1:1 indicates the UUT and the standard have the same tolerances.
This rule is often called the 10:1 rule or the Gagemaker`s Rule. For calibration of measuring equipment, MIL-STD-120 stated that the accuracy of the measurement standards used for calibration should not exceed 20% of the tolerances of the measuring equipment being calibrated.
The error is calculated by determining the difference between the actual output measured and the ideal output for a particular input value.
Calibration Range

The zero value is the lower end of the range or LRV and the upper range value is the URV. For example if an instrument is to be calibrated to measure pressure in the range 0psig to 400psig, then LRV = 0 and the URV = 400psig. The calibration range is therefore 0 to 400psig.

Comply with regulations. In areas where instrument accuracy is critical to product quality or safety, calibration is done in every six months – or even more frequently – is advised.
The terms alignment and calibration are often used as interchangeable matters. However, it is not entirely true. However, they are intercorrelated since, after any kind of alignments, it is crucial to make sure that all the pre-collision systems have been properly calibrated.
These adjustments are the camber, caster and toe. On some cars, not all of these can be adjusted on every wheel. These three parameters can be further categorized into front and rear (with no caster on the rear, typically not being steered wheels).
The temperature requirement for electrical or electronic calibration is typically about 73 degrees Fahrenheit (23 Celsius).

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Hunter node _ Running water all the time
ANSWER : Solenoid Valve set to manual on St Valve to off position

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Is the rubber on the drive wheel on the snapper mower fixed to the metal hub? The rubber wheel part of the drive is not securely attached to the metal frame and slips when the mower goes up hill. Should I replace the drive wheel?
ANSWER : Yes, it may have gotten excessive oil on it and swelled the rubber. Replace the drive wheel.

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Lawnmower front wheels are locked
ANSWER : Take it apart and clean it. Grass and oil can easily clog any lawn equipment. Is it belt driven? If so turn the belt with your hand the way it would normally rotate. Follow the belt to the engine and clean the rotor if that doesnt work.

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The wheels on my Toro 20038 are worn smooth. Is replacing the rear wheels a difficult job for a fairly competent owner?
ANSWER : You can do this one. Get the wheels from a dealer like www.arcolawn.com and install them yourself. 1/2″ head bolt on each wheel and a nut on the back side fasten them. easy as Pie….Well I would say easier. Have you ever made pie? tough job.Good luck

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Front wheels are ”sticking” bad, drive is not engaged but wheels will not move freely
ANSWER : Thanks for your question!I’m sorry that you haven’t received an answer yet.The response rate on FixYa FREE questions is usually over 80%, but sometimes questions go un-answered when:1. the question is unclear, incomplete, or poorly worded…2. the question is mis-categorized – so the correct experts aren’t viewing it…3. the question requires an answer for something that cannot be explained online adequately…4. specific training, tools, or equipment are required to avoid injury or death…5. the Experts that are online simply don’t have the resources to answer your question fully…Please feel free to re-work your question if you feel one of these may be the reason.Of course you are not required – but converting your question to a PAID one usually increases the reply rate as well.Normal rates for FixYa are…$ 9.99 answer for one question.$12.99 Live Real-Time online chat or premium e-mail support.$29.99 Live Real Time phone supportSometimes FixYa will run specials for unlimited questions via monthly subscription or reduced rates for limited periods.Consider
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I have installed a Hunter psr22 pump start relay and connected it to a Hunter src irrigation controller and when I cycle the irrigation controller to manual all stations it will not start the pump. There is pump power in to and out of the relay. The pump will start when relay operated manually. There are only two wires from the relay that have been landed on the controller terminals mv and c.
ANSWER : So the mv and c are supplying power to the transformer/relay and out of it, but the pump won’t start until the relay is forced.
I’m thinking the relay contacts are oxidized, and need to be cleaned. When they have oxidation, current goes up, and voltage might appear ok. If any start capacitors are in the circuit, they can be faulty, breaking down under a load, while reading ok. I haven’t heard of any caps in these systems, but just in case.
The following blog may help you- it’s about different controller situations:
http://forums2.gardenweb.com/forums/load/water/msg121639307045.html?9
Hunter’s website has some things to check concerning the controller:
http://www.hunterindustries.com/resources/library/product_technical.html
Looks like it could be microprocessor lockup. It’s quite a process, but here’s what they say is the fix:
http://www.hunterindustries.com/resources/library/Technical/200611_hdln_micropro.html
Good luck, hope this helps, and thanks for using FixYa.

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Front wheels lock up when pull mower backwards
ANSWER : Typically self-propelled mowers are propelled using the front wheels, which only turn forward. Pulling the mower back while the front wheels are turning will damage the drive gears. It’s best to raise the front wheels slightly off the ground before pulling back.

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Why can’t I remove front wheels? Ihave removed all bolts and screws; something seems to be locking the wheels on.
ANSWER : The bearings are no doubt shot, but the wheel should still come off. Check closely and see if there is a cauter pin which needs to be removed.

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