vibration at clutch SD22 720

Dealing with all subsystems specific to the diesel powered Datsun-Nissan 720 pickup trucks.

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vibration at clutch SD22 720


Post by docdillio »

i have a loud vibration at idle (or when stopped) that i cannot locate, but it stops when i push down on the clutch pedal. i'm assuming it's in the clutch housing, related to the clutch plates, but i don't know enough to make any adjustments to stop the noise. it's been like this for a long time. any thoughts?
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Post by Nissan_Ranger »

Mine also has a rattle that goes away when I apply the clutch; it stops as soon as I feel the pressure increase at the pedal. Like mine, it's likely the clutch fingers lightly slapping at the release bearing and making it rattle. It hasn't changed in over three years of driving and so in my case, I'm gonna do nothing about it.

The old 'six gun' was as popular as the cell phone in its time and just as annoying when it went off in the Theater.
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Post by moose60 »

These trucks also have a gear rattle condition when the transmission gear oil is warm. Mine rattles in neutral with the clutch out. It rattles more as the oil gets hotter (thinner). This has been explained to me as "no big deal" .

Hopefully you have the same (non)issue.

82 Datsun 720 KC SD22

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Post by asavage »

Rattle in neutral, clutch released, is somewhat usual on the SD.

However, vibration is not.

Does the trans make any whining noise while driving in any gear except 4th? If so, find the thread about the FS5W71x transmissions and read about the front bearings failure problem.
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.
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