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Old 03-03-2018, 07:15 PM   #1
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Default Clutch 1989 D21 4x4. Possible replacement?

Hello folks,

I tried to search for a thread on this, but not much info.

I have a high milage 1989 D21 4x4. At least 300k miles. Odometer broke at around 220k

I have recently started to feel and hear vibration while shifting through 2nd, 3rd and 4th under load, but it still seems to be grabbing pretty well for the moment, and calms down once I'm rolling at speed.

When I first bought the truck in 2012, I would only notice it (very mildly) occasionally while in 5th on the highway.

Does this symptom sound familiar to anyone here?
Time for a clutch job?

If so, can anyone point me in the right direction? Advice, Videos, perhaps another thread?

Much thanks in advance!

Doc.
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Old 03-03-2018, 07:43 PM   #2
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Does it do the shaking while under a hard pull or just taking off like a granny? It sounds like the pressure plate is letting the clutch disk slip.

It would not hurt to make sure the master cylinder and slave are not leaking.
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Old 03-06-2018, 03:11 AM   #3
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Quote:
Originally Posted by cadillacdude1975 View Post
Does it do the shaking while under a hard pull or just taking off like a granny? It sounds like the pressure plate is letting the clutch disk slip.

It would not hurt to make sure the master cylinder and slave are not leaking.
Thanks brother. Sorry for the delay, I just saw your reply.

It's a subtle vibration as I increase the load during a hard pull, mostly in 3rd. It's also been a bit hard to put it into 1st gear occasionally.

I'll check out both of those. Replaced the slave cylinder a few months ago. It's not leaving any spots where I park it, but it can't hurt to check.
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Old 03-07-2018, 12:13 AM   #4
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It is probably just worn out. My original clutch was still working last year, but when I had my atvs and trailer attached, I could tell it was working harder than it needed. When it was first changed, the clutch pedal felt really mushy. It went back to normal around the 150 mile mark. I had a new flywheel installed too, so i guess it all had to heat cycle and seat.
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Old 03-07-2018, 04:14 AM   #5
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Quote:
Originally Posted by cadillacdude1975 View Post
It is probably just worn out. My original clutch was still working last year, but when I had my atvs and trailer attached, I could tell it was working harder than it needed. When it was first changed, the clutch pedal felt really mushy. It went back to normal around the 150 mile mark. I had a new flywheel installed too, so i guess it all had to heat cycle and seat.

Thanks man. I guess I can't complain having 300k + miles on it. Lol.
I got a quote for $900-$1000 for a clutch job. Does that sound about right?
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Old 03-15-2018, 06:24 AM   #6
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Yeah that’s a fairly typical cost for a clutch job. Parts are cheap - it’s all labour. I just got a quote from three different shops and they averaged CAD$1300. I opted instead to buy the clutch kit and flywheel and will do it myself to save about CAD$1000.
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Old 08-28-2018, 05:51 PM   #7
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I would check carrier bearing on the driveshaft it will vibrate under load if it is bad
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