Clutch Mystery
#1
01-20-2019, 02:56 PM
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Clutch Mystery
20JAN19
Need advice re: 84/85 W100 225/6 435 xmission
The clutch is beginning to slip. I removed the clutch, and everything looks OK! Pressure plate, friction disk, and flywheel clean no oil and some wear.
There is very little (and now no) room for adjustment between the throwout and the fingers. There is clutch chatter in reverse unless care is used.
It's an 11" diaphram clutch coupled with a recessed flywheel.
I was under the impression that the diaphram clutch was coupled a flat flywheel and was used with an 833 transmission.
In '85, the 225 had two Coil Spring clutches, a 10" and an 11". Didn't they use the recessed flywheel?
Regarding the clutch: In a relaxed state. the bolt-up distance between the clutch housing
and the flywheel is about 1/4". It seems to me that it should be about 1/2" to 3/4". were the flywheel flat then this should cause the diaphram fingers to retract and allow for throwout adjustment. The flywheel recess is about 3/4" and the total friction plate is, with some wear, 0.300".
It looks like a hack job!
Any response appreciated.
Need advice re: 84/85 W100 225/6 435 xmission
The clutch is beginning to slip. I removed the clutch, and everything looks OK! Pressure plate, friction disk, and flywheel clean no oil and some wear.
There is very little (and now no) room for adjustment between the throwout and the fingers. There is clutch chatter in reverse unless care is used.
It's an 11" diaphram clutch coupled with a recessed flywheel.
I was under the impression that the diaphram clutch was coupled a flat flywheel and was used with an 833 transmission.
In '85, the 225 had two Coil Spring clutches, a 10" and an 11". Didn't they use the recessed flywheel?
Regarding the clutch: In a relaxed state. the bolt-up distance between the clutch housing
and the flywheel is about 1/4". It seems to me that it should be about 1/2" to 3/4". were the flywheel flat then this should cause the diaphram fingers to retract and allow for throwout adjustment. The flywheel recess is about 3/4" and the total friction plate is, with some wear, 0.300".
It looks like a hack job!
Any response appreciated.
#3
01-22-2019, 06:47 PM
Join Date: Jan 2019
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I bought the truck 18 yrs ago, and that's what came with it! It's a 130T for an 11" clutch with offset crank holes. I'll take it out and measure the diameter too. I wonder if this was a replacement engine from an older truck. I should look at the manufacture date on the block.
I have three options:
1. Get a used flywheel from a junk yard ....... and hope it's the right one. I have yet to find an after market.
2. Machine the bosses of of the flywheel that I have, essentially making it flat.
3. Find a clutch that fits!
I like #1.
I appreciate your response, thanks.
I have three options:
1. Get a used flywheel from a junk yard ....... and hope it's the right one. I have yet to find an after market.
2. Machine the bosses of of the flywheel that I have, essentially making it flat.
3. Find a clutch that fits!
I like #1.
I appreciate your response, thanks.
#4
01-23-2019, 10:45 AM
If you've got an '84 then it should have the mechanical clutch, I think (my '84 W150 with the same engine/transmission does, at least). The mechanical clutch has an adjustment that can be made on the outside of the clutch housing, where the Z-bar couples to the pedal rod, that will increase or decrease the clutch space when you press & release the pedal. Try adjusting that and see if it fixes your problem, before you bother tearing everything apart and start throwing parts at it.