Clutch Travel not enough... Help
12-11-2002, 02:14 AM
#1
Instructor
Thread Starter
Clutch Travel not enough... Help
This segment continues my saga to correct the clutch pedal travel of my 1991 C4.
In reference to 911 Carrera 4 Workshop manual page 30-9 clutch operation.
I attempted to correct a clutch that engaged inches from the floorboard and at the floorboard when the vehicle was hot.
+ Replaced Clutch Master
+ Replaced Clutch Slave
+ Replaced Roll Pin
+ Replaced Rubber Line a Slave
+ Adjusted Boost Spring
+ Bled Clutch System
Problem relates to adjustment #3 Pedal Travel spec 145mm + 10mm. With floorboard stop at furthest limit travel is 120mm. With floorboard removed travel at 125mm. Mechanically clutch master limits range of pedal travel.
Observation: The clutch pedal is about 45mm lower than the brake pedal at rest.
I think that the clutch pedal or the shaft that travels through the pedal cluster from the pedal to the pivot is twisted.
Has anyone ever run across a clutch that would not meet minimum travel spec. when the floorstop is at maximum limit?
Bill
In reference to 911 Carrera 4 Workshop manual page 30-9 clutch operation.
I attempted to correct a clutch that engaged inches from the floorboard and at the floorboard when the vehicle was hot.
+ Replaced Clutch Master
+ Replaced Clutch Slave
+ Replaced Roll Pin
+ Replaced Rubber Line a Slave
+ Adjusted Boost Spring
+ Bled Clutch System
Problem relates to adjustment #3 Pedal Travel spec 145mm + 10mm. With floorboard stop at furthest limit travel is 120mm. With floorboard removed travel at 125mm. Mechanically clutch master limits range of pedal travel.
Observation: The clutch pedal is about 45mm lower than the brake pedal at rest.
I think that the clutch pedal or the shaft that travels through the pedal cluster from the pedal to the pivot is twisted.
Has anyone ever run across a clutch that would not meet minimum travel spec. when the floorstop is at maximum limit?
Bill
12-11-2002, 04:35 AM
#4
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axl911
Roll pin is on the clutch Fork. Its the fork which disengages the clutch, and allows you to shift. Porsche has redesigned several times the bearing and fork shaft, because rust could set on, leading to the bearings to fail. It's not an expensive part, but it's a pig to replace since you have to open the bell house to access the fork.
Hope this helped
THOMAS <img src="graemlins/wave.gif" border="0" alt="[byebye]" />
Roll pin is on the clutch Fork. Its the fork which disengages the clutch, and allows you to shift. Porsche has redesigned several times the bearing and fork shaft, because rust could set on, leading to the bearings to fail. It's not an expensive part, but it's a pig to replace since you have to open the bell house to access the fork.
Hope this helped
THOMAS <img src="graemlins/wave.gif" border="0" alt="[byebye]" />
12-11-2002, 03:03 PM
#5
Burning Brakes
The roll pin I had problems with was in the pedal assembly (is that the "clutch fork?"). Mine has backed out on me twice, so the second time I had a new clutch pedal and roll pin installed. It happened once to the prior owner as well.
12-11-2002, 03:28 PM
#6
Instructor
Thread Starter
The roll pin that fails is in the pedal cluster. In the PET it's in the pedal section. I can get you the PN when I get home if you like.
In reference to the replacement of the clutch pedal? How much did that run?
Bill
In reference to the replacement of the clutch pedal? How much did that run?
Bill
