You don't say symptoms or how/when occurred (pre/post crash/engine out/clutch change) etc Firstly, find out from your dealership service department what amount of movement of the slave cylinder actuator rod there should be. If yours matches, hydraulic system fine. If movement too short then check behind clutch pedal and end of slave cylinder for leaks, check metal and flexible hose for damage. If slave cylinder actuator slow to return or clutch pedal very hard to press then flexihose could have internal collapse. If new clutch fitted, in rare cases can cause master cylinder rubbers to fail
You need to lift the collar on the gear stick to engage reverse gear
No, you push the clutch all the way in to disengage the gear you are using from the drive train, and then you engage the next gear you want to use and re-engage that gear to the drive train.
The gear stick has a diagram of where to move the stick to engage a certain gear. For example, if Gear 1 is in the top left corner, you must move the stick to the fair left, then forwards to engage first gear. Oh, and you have to push down the clutch each time you change gear.
== ==
because that is just the type of car that does that.
It's the overdrive engage button, which is like a 5th gear. It only engages when the gear lever is in 4th gear and it can be operated without depressing the clutch.
Starters are made specifically for certain engine and transmission combinations. The snout of the starter must be the correct length for the worm gear to engage the ring gear. If you have the wrong starter, the worm gear will not engage properly. If the ring gear is damaged, the starter might be operating properly, but have no teeth to engage. If the solenoid is not working, the starter motor will spin, but the worm gear will not be pushed forward to engage the ring gear. Remove the starter, and visually check the ring gear for missing teeth. If the ring gear appears to be intact, take the starter back to the place where it was purchased and have it tested. If the starter tests good, check the solenoid wiring on the vehicle to insure that the solenoid is being energized. If all of these steps fail to identify the problem, return the starter and get a different starter out of stock and compare them. You might have a mislabeled starter.
Perhaps clutch needs adjustment or replacement
1. To engage the starter with the ring-gear on the engine before the starter is turned on. IE to "pre-engage" it. 2. To turn the starter on once it is Engaged. This prevents/reduces damage to the gear-teeth on both the starter and the ring gear.
You should engage reverse thrust just after the nose landing gear touches the ground. You should disengage it when the co-pilot tells you to.
check the brake pedal switch
There could be several reasons why the 4th gear in your 1992 Mercedes 300 SE may not engage. The reasons can include a gummed up solenoid, a wiring issue, or a relay switch problem.