How is duty cycle calculated?
Calculate the period, or “T”, of the frequency, or “f,” using the formula: T = 1/f. For example, if the frequency is 20 hz, then T = 1/20, with a result of 0.05 seconds. Determine the duty cycle, represented by “D,” through the formula D = PW/T.
What is equipment life cycle cost?
Equipment life-cycle cost analysis (LCCA) is typically used as one component of the equipment fleet management process and allows the fleet manager to make equipment repair, replacement, and retention decisions on the basis of a given piece of equipment’s economic life.
Is equipment 5 or 7 year depreciation?
Five-year property (including computers, office equipment, cars, light trucks, and assets used in construction) Seven-year property (including office furniture, appliances, and property that hasn’t been placed in another category)
Is a rebuilt engine as good as new?
Frequently, rebuilt engines are superior to even new car engines because better parts are used, or design changes in parts correct problems with the original engine. Rebuilt engines are dependable, reliable and are backed by the engine manufacturers warranty program.
How many times can you rebuild an engine?
Most manufacturers will provide the necessary “meat” in the casting to allow as many as three or four insert replacements. Cylinders can be bored out several times. With each rebore the base of the cylinder is painted to indicate to the mechanic what level of rebore or, the new oversize of the cylinder.
Can you clean your engine with wd40?
Spray WD-40 multi use productUse WD-40 and spray the entire greasy engine compartment with it. Remove the grease and grime with water and rinse it off. Depending on how dirty your engine is, you can also use a small brush to remove the grease for the hard-to-reach parts.
Can I wash my engine at the carwash?
In cleaning engine at car wash, you must be careful with the electrical components, as water might get in contact with them and damage them. So you must be prepared with plastic bags for covering those electrical components and electrical tape for securing the plastic covering.
How much does it cost to have your engine steam cleaned?
On average, the engine steam cleaning cost will be upwards of $100 and can go up to $400.
What parts should you cover when washing an engine?
Using plastic bags, cover any sensitive electrical components, such as the battery, ignition wires, and engine control unit. If there’s an exposed engine air intake under the hood, you’ll want to cover that as well. If you feel like you’ll be particularly careful with your rinsing, then you can skip this step.
How smooth should a cylinder head be?
Roughness Average (Ra) is the average micro-inch measurement of peak-to-valley roughness height of a flat surface. The lower the Ra number, the smoother the surface. Fel-Pro recommends a finish of 60 to 80 Ra for cast iron cylinder heads and blocks and 50 to 60 Ra for aluminum.