governor: no rpm adjustment when TEF20 engine loaded
Publié : 24 Avr 2011, 09:01
Hi John,
I read we could ask you when a problem seems "hard" to fix. So I would like to talk about mine and see if ever you had ideas about how to solve it?
I have a 1952 TEF tractor whose engine seems to work fine: good power, very little leaks, no overheating, great idling, fast engine speed response when I move the throttle lever. But apart from that, the engine speed drops under load (as any engine would do) but doesn't go back to it preset level automatically, which I guess should be the case under the governor action. The load doen't need to be heavy, if I drive in second or third gear, the engine speed drops compared to what it was set in neutral (1500 rpm for instance). Same thing when ploughing or whatever.
If I manually pull the throttle lever down, the engine revs up with no hesitation. And when I get to push the clutch pedal down, and as the load is taken of, the engine roars until I move the throttle lever up. It is not conveniant to use the tractor this way.
The governor membrane looks good, the vacuum pipe isn't blocked up (I guess the engine speed wouldn't vary well if not).
I don't know what else I could check (by the way, the "little stick" inside the governor, in the middle of the spring, moves towards the back of the tractor when the linkage moves to accelerate, is that the right way?)
Do you have any suggestion to help me?
Many thanks !
Stephenk
I read we could ask you when a problem seems "hard" to fix. So I would like to talk about mine and see if ever you had ideas about how to solve it?
I have a 1952 TEF tractor whose engine seems to work fine: good power, very little leaks, no overheating, great idling, fast engine speed response when I move the throttle lever. But apart from that, the engine speed drops under load (as any engine would do) but doesn't go back to it preset level automatically, which I guess should be the case under the governor action. The load doen't need to be heavy, if I drive in second or third gear, the engine speed drops compared to what it was set in neutral (1500 rpm for instance). Same thing when ploughing or whatever.
If I manually pull the throttle lever down, the engine revs up with no hesitation. And when I get to push the clutch pedal down, and as the load is taken of, the engine roars until I move the throttle lever up. It is not conveniant to use the tractor this way.
The governor membrane looks good, the vacuum pipe isn't blocked up (I guess the engine speed wouldn't vary well if not).
I don't know what else I could check (by the way, the "little stick" inside the governor, in the middle of the spring, moves towards the back of the tractor when the linkage moves to accelerate, is that the right way?)
Do you have any suggestion to help me?
Many thanks !
Stephenk