Depanaj Eaton Transmisyon angrenaj & arbres
eurte angrenaj
Snubbing and clashing gears while shifting are frequent abuses to which unsynchronized transmissions are subjected. Light snubbing will do little damage. The real damage is done by the hard clash shift caused by engaging gears which are far out of synchronization. This can break pieces of metal from the ends of the clutching teeth. Clashing gears can be traced to one of three causes:
Snubbed seran Gear Dan
1. move itinerant
This applies to drivers who are not familiar with the shift pattern or have not learned the RPM spread between shifts.
2. klòtch
Clashing when starting up in first or reverse gear can be caused by insufficient clutch clearance or a dragging clutch not releasing properly. This makes the transmission countershafts and mainshaft gears continue rotating while the clutch pedal is depressed. Clashing results when the nonrotating sliding clutch is forced to mesh with a rotating mainshaft gear. Double clutching during lever shifts will also reduce snubbing and clashing.
3. inèrsyèl Force
Countershafts ak angrenaj Mainshaft anjeneral pran soti nan 3 to 5 segonn yo sispann wotasyon apre anbreyaj a te libr. Eseye may yon Kovèti pou anbreyaj ak yon Kovèti pou Mainshaft anvan Kovèti pou la Mainshaft sispann sa pral lakòz nan eurte. Si transmisyon an se pa sa ekipe ak yon fren anbreyaj oswa kontreanp fren, li nesesè pran yon poz yon kèk segond apre dépressions pedal la anbreyaj anvan eseye premye angajman nan transmisyon a.
Marks Faktori
Sometimes gears are replaced or thought to be defective because of marks left on the gear by manufacturing processes. bouton sa yo, sepandan, do not contribute to gear failure and the gear should not be replaced because of these marks.
cuisinier, make
These are cutting marks or lines formed during the initial cutting of the gear teeth. Hob marks on the tooth face will be removed by the shaving process, but hob marks in the root of the tooth will most likely remain, and may be found even on gears with much wear on them.
bab Marks
The shaving operation leaves distinct diagonal marks on the face of the gear tooth. These marks can be distinguished from scoring marks by the fact they are diagonal, while scoring marks are more nearly vertical. Most shaving marks are removed during normal gear operation.
Kovèti pou Lipping
Lipping oswa bab ebarbur, is the formation of “lips” at the tip of the gear teeth machining. Sa yo "bouch" pral fè pa gen okenn mal nan Kovèti pou la.
Kovèti pou chante nan San fè anyen konsa
Mainshaft gears are designed to have a specified amount of axial clearance which allows them to rotate freely on the mainshaft. The amount of clearance is governed by the use of washers. Yon ki graj motè ralenti ka mete kanpe vibrasyon, causing the mainshaft gears to rattle as they strike mating gears. This condition can usually be cured by improving the idling characteristics of the engine. Tolerance washers may have to be changed to bring the axial gear clearance to within tolerance on high mileage units. See the service manual for procedure and specifications.
Aks tòde ak frakti
Failure of transmission shafts through fracturing or twisting is caused when stresses are imposed on them which are greater than they were designed to withstand. The main causes for these failures are:
- teknik seran Move.
- Kòmanse nan twò wo nan Kovèti pou.
- lugging.
- Eseye kòmanse avèk fren fèmen.
- Transmission used for application it was not designed to withstand.
- Eurt nan waf lè fè bak.
- Move aliye nan reglabl volan 5yèm.
fraktire Mainshaft
Menm jan ak dan Kovèti pou, shafts may fracture as a result of fatigue or impact.
Twisted Mainshaft
Loads not severe enough to cause shaft fractures may cause the shaft to twist.
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