Problemen oplossen Eaton Transmission Gears & assen

botsende Gears

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 clutching gear teeth

Afgesnauwd Clutching Gear Tanden

1. Onjuiste Shifting

This applies to drivers who are not familiar with the shift pattern or have not learned the RPM spread between shifts.

2. Koppeling

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. traagheidskracht

Contra-en hoofdas tandwielen Meestal nemen van 3 naar 5 seconden stilstaan ​​nadat de koppeling is ontkoppeld. Probeert een koppeltandwiel samenwerken met een hoofdas tandwiel voor de hoofdas tandwiel stopt leidt tot botsende. Als de verzending niet is voorzien van een rem of koppeling tussenas brake, is het noodzakelijk om een ​​paar seconden te wachten na het indrukken van het koppelingspedaal voordat het begin van aangrijpen van de transmissie.

Manufacturing Marks

Sometimes gears are replaced or thought to be defective because of marks left on the gear by manufacturing processes. deze vlekken, echter, do not contribute to gear failure and the gear should not be replaced because of these marks.

Hob Marks

hob marks

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.

scheren Marks

shaving marks on gear

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.

Gear Lipping

Gear Lipping

Randen of scheren bramen, is the formation of “lips” at the tip of the gear teeth machining. Deze “lips” zal geen kwaad doen om het tandwiel.

Gear Rattle bij Idle

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. Een ruwe stationair draaiende motor kan het opzetten van trillingen, 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.

Shaft Twist and Fracture

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:

  1. Onjuiste geklemd technieken.
  2. Beginnend in een te hoge versnelling.
  3. zeulen.
  4. Proberen om te beginnen met remmen geblokkeerd.
  5. Transmission used for application it was not designed to withstand.
  6. Stoten in dock tijdens het achteruitrijden.
  7. Verkeerde montage instelbare 5 wheel.
fractured mainshaft

Fractured hoofdas
Zoals met tandwieltanden, shafts may fracture as a result of fatigue or impact.

twisted mainshaft

Twisted hoofdas
Loads not severe enough to cause shaft fractures may cause the shaft to twist.

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