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Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs


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Old 11-18-2015, 02:07 PM   #113
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Quote:
Originally Posted by pantdino View Post
This is true. An hydraulic clutch system self-adjusts for wear.

What is described in the video just adjusts the pedal position. Since most people learn how far they have to push the pedal in to shift without crunching they do not push it all the way to the floor. I guess if someone does this adjustment might help.
With so many people complaining about TOB failures occurring much earlier than clutch wear out and many complaining about rattle at idle I am starting to wonder if our TOBs really are fully clearing the clutch fingers when clutch isn't used.

If the TOB is not returning to its withdrawn position or of there is some contact whatsoever then the TOB is being spun all the time. This means the TOB is used all the time and maybe why so many premature failures and rattle at idle.

When I adjusted my clutch I made sure the master cylinder plunger is fully back sitting at its base and made sure the clutch switch position is not preventing the master plunger from fully retracting. If it was preventing the plunger from fully retracting it could be pushing the slave cylinder plunger ever so slightly that the TOB might be rubbing against the clutch spring but not exerting pressure. If this rubbing continues the TOB can fail.

Those with failed TOBs can you make sure the main plunger at the footwell is all the way back when you release the clutch and that the switch is not preventing it from retracting fully?
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Old 11-18-2015, 02:43 PM   #114
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Originally Posted by thambu19 View Post
With so many people complaining about TOB failures occurring much earlier than clutch wear out and many complaining about rattle at idle I am starting to wonder if our TOBs really are fully clearing the clutch fingers when clutch isn't used.

If the TOB is not returning to its withdrawn position or of there is some contact whatsoever then the TOB is being spun all the time. This means the TOB is used all the time and maybe why so many premature failures and rattle at idle.

When I adjusted my clutch I made sure the master cylinder plunger is fully back sitting at its base and made sure the clutch switch position is not preventing the master plunger from fully retracting. If it was preventing the plunger from fully retracting it could be pushing the slave cylinder plunger ever so slightly that the TOB might be rubbing against the clutch spring but not exerting pressure. If this rubbing continues the TOB can fail.

Those with failed TOBs can you make sure the main plunger at the footwell is all the way back when you release the clutch and that the switch is not preventing it from retracting fully?
I harp on this all the time.

But by design, the TOB rests against the clutch fingers. No-load rotation is ok.
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Old 11-18-2015, 02:50 PM   #115
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I drive a 1000 miles a week
WTF . Time for a monster OSG BRZ / 86 clutch upgrade...

Last edited by juliog; 03-16-2018 at 09:35 PM.
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Old 11-18-2015, 05:13 PM   #116
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Since I have not had the car on a lift, is there a small removable inspection plate on the bottom of the bell housing?
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Old 11-18-2015, 05:15 PM   #117
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Quote:
Originally Posted by thambu19 View Post
With so many people complaining about TOB failures occurring much earlier than clutch wear out and many complaining about rattle at idle I am starting to wonder if our TOBs really are fully clearing the clutch fingers when clutch isn't used.

If the TOB is not returning to its withdrawn position or of there is some contact whatsoever then the TOB is being spun all the time. This means the TOB is used all the time and maybe why so many premature failures and rattle at idle.

When I adjusted my clutch I made sure the master cylinder plunger is fully back sitting at its base and made sure the clutch switch position is not preventing the master plunger from fully retracting. If it was preventing the plunger from fully retracting it could be pushing the slave cylinder plunger ever so slightly that the TOB might be rubbing against the clutch spring but not exerting pressure. If this rubbing continues the TOB can fail.

Those with failed TOBs can you make sure the main plunger at the footwell is all the way back when you release the clutch and that the switch is not preventing it from retracting fully?
Like people with automatic transmissions that rest their left foot on the brake pedal and burn the brakes off the car and wonder why they need brake pads every 5,000 miles.........
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Old 11-18-2015, 07:31 PM   #118
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Like people with automatic transmissions that rest their left foot on the brake pedal and burn the brakes off the car and wonder why they need brake pads every 5,000 miles.........
I am just wondering. I don't know for sure.
I simply cannot imagine this to be a bearing defect since most bearings undergo rigorous tests and some failures happen with as low as 30K miles.
It is possible there is some condition that is accelerating the failure and the only one I can think of is no-load rotation of the bearing or occasional no-load rotation of the bearing. Not sure but just putting it out there.
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Old 11-18-2015, 07:32 PM   #119
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If we can prove it though then Toyota and Subaru cannot deny warranty claims anymore and I can see a recall coming of some sort.
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Old 11-18-2015, 10:20 PM   #120
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Originally Posted by thambu19 View Post
If we can prove it though then Toyota and Subaru cannot deny warranty claims anymore and I can see a recall coming of some sort.
Well they've already denied my warranty claim, so I'm going to adjust the shit out of it.
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Old 11-18-2015, 10:25 PM   #121
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Well they've already denied my warranty claim, so I'm going to adjust the shit out of it.
Lol! Don't do that haha... Just adjust it so that you fully disengage the the clutch and still have half an inch or so to go towards the firewall so you know for sure the clutch isnt dragging. Also make sure that when you adjust the clutch switch it is not preventing the full return of the system. Or rather make sure the metal plunger hits its base and you have 1mm gap at the clutch switch so the system is fully retracted when not in use.
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Old 11-19-2015, 01:07 AM   #122
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Whoa.. I'm gonna join the party here.

Every so often my TOB would "honk" when I depressed it shift but now it's escalated. When the car is cold, like getting firing up in the morning or after work, the TOB is very audible when the clutch is depressed. So much so that this morning I almost considered driving the Expedition to work.

However, once the engine/transmission is warmed up the TOB doesn't make the grinding noise when the clutch is depressed so it would be very hard to take it to the dealer and replicate it in front of them. I'd have to drop it off and come back.

I'm going to call the dealer tomorrow and see what they say.
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Old 11-19-2015, 01:12 AM   #123
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Originally Posted by rice_classic View Post
Whoa.. I'm gonna join the party here.

Every so often my TOB would "honk" when I depressed it shift but now it's escalated. When the car is cold, like getting firing up in the morning or after work, the TOB is very audible when the clutch is depressed. So much so that this morning I almost considered driving the Expedition to work.

However, once the engine/transmission is warmed up the TOB doesn't make the grinding noise when the clutch is depressed so it would be very hard to take it to the dealer and replicate it in front of them. I'd have to drop it off and come back.

I'm going to call the dealer tomorrow and see what they say.

this 100%

i have taken it to 2 subaru dealerships and they cant replicate it because its not severe enough as it when i first start up the car.
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Old 11-19-2015, 06:59 AM   #124
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Originally Posted by rice_classic View Post
Whoa.. I'm gonna join the party here.

Every so often my TOB would "honk" when I depressed it shift but now it's escalated. When the car is cold, like getting firing up in the morning or after work, the TOB is very audible when the clutch is depressed. So much so that this morning I almost considered driving the Expedition to work.

However, once the engine/transmission is warmed up the TOB doesn't make the grinding noise when the clutch is depressed so it would be very hard to take it to the dealer and replicate it in front of them. I'd have to drop it off and come back.

I'm going to call the dealer tomorrow and see what they say.
So this sound happens when depressing it say 10% or so just enough to apply the initial pressure on the TOB? or when fully depressing the clutch. I read some guys saying the noise was only with slight force on the pedal and goes away on full clutch pedal. Please confirm.

I am wondering if they used the wrong grease for the bearing that gets too thick at colder conditions and is fine at normal working conditions.

On the other hand I am suspecting the actuation mechanism itself. Is there a spring the the clutch fork, bearing assemble meant to being the bearing back to its base position and clear the clutch pressure plate when clutch is released? I have seen many models that has a return spring. Not sure if we have such a spring. If we had one the bearing should be well clear of the clutch pressure plate when no force is applied on the clutch pedal and nothing should squeak.
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Old 11-19-2015, 09:52 AM   #125
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Old 11-19-2015, 12:48 PM   #126
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Replied. I liked it for a minute.

Again, there are two issues at play, the creak from moving the TOB, or a failed TOB.

I have the creak.
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