Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 911 Technical Forum


Reply
 
LinkBack Thread Tools Rating: Thread Rating: 1 votes, 5.00 average.
Author
Thread Post New Thread    Reply
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
Throttle Cable Snapped....on my '68 911L....i think

Hey,

Throttle Cable Snapped....on my '68 911L....i think....

Just towed her back to my place......As far as I can tell from feeling around down there....the rod connecting the gas pedal is still connected but i don't know....

I am a useless wrench...but I'll give it a shot...

suggestions?
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 01:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
B D B D is offline
Registered User
 
B D's Avatar
 
Join Date: May 2003
Location: Laguna Beach, CA
Posts: 1,405
What happens if some one pushes on the gas pedal does the linkage on the carbs move? Check all the linkage to start, there are a few connections in the engine compartment just remove the air box to check those. The next connection to check would be under the car left rear by the trans and brake line. Good luck it's a simple system.
__________________
68 911L
Old 06-18-2005, 01:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
Ok....

the two push-rods...i think that is what they are called are properely connected, they haven't jumped off.....soooo i think my pedal is fine......I'm thinking my cable has snapped.....

SvK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 01:34 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
BD my linkage is the culprit.......what page in the haynes manual?

do you know.....trying to find the stuff under the car!!!

thanx,

SvK
(god i'm useless hehehehe)
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 01:39 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
I'm looking at Chap2 Fuel&Exhaust sytems............found Accelerator Pedal stuff....but can't find anything regarding the linkage.

SvK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."

Last edited by svonkampen; 06-18-2005 at 01:43 PM..
Old 06-18-2005, 01:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
B D B D is offline
Registered User
 
B D's Avatar
 
Join Date: May 2003
Location: Laguna Beach, CA
Posts: 1,405
There are also two connections behind the linkage to the carbs follow the rod back. The connection is by the left carb and up against the firewall. You will see a hole there where the rod comes up from below. You need a helper to diagnose this to push on the pedal while you take a look around.
__________________
68 911L
Old 06-18-2005, 01:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
B D B D is offline
Registered User
 
B D's Avatar
 
Join Date: May 2003
Location: Laguna Beach, CA
Posts: 1,405
Not sure about Haynes for this, they cover so many years and use few good SWB diagrams. Check the linkage in the left rear, jack the rear up first.
__________________
68 911L
Old 06-18-2005, 01:44 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
right....

thanx

svK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 01:45 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
B D B D is offline
Registered User
 
B D's Avatar
 
Join Date: May 2003
Location: Laguna Beach, CA
Posts: 1,405
Check this thread for the daigram, part #18 is what you will see in the left rear. It goes up in to the engine compartment.
__________________
68 911L
Old 06-18-2005, 01:47 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
B D B D is offline
Registered User
 
B D's Avatar
 
Join Date: May 2003
Location: Laguna Beach, CA
Posts: 1,405
Sorry here's the thread: Bolt sizes, clutch & Throttle adjustment Q's
__________________
68 911L
Old 06-18-2005, 01:48 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
BD ....urock

Checked underneath the car part "18" snapped !!!!

At least it is an easy fix!



btw: my car goes to TRE on monday for a new engine anyway......so it don't matter

SvK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 02:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
OK what is the name of part 18?.......

Wayne you there?

SvK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 02:34 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
SvK,

There isn’t a cable; it is almost all rods and ball-socket linkage.

First check that all the linkage is connected. The links are:
Push rod from accelerator pedal to front bell-crank.
Pull rod at front bell-crank.
The infamous cushion alongside the transmission nose piece.
Links at the transmission bell-crank.
Pull rod between transmission bell crank and engine bell-crank.
Pull rod between engine bell-crank and carb cross shaft.
The two down links to the carburetors.

The most likely cause is the rubber cushion that is in the linkage
between the bell-crank at the pedal assembly and the bell-crank
at the side of the transmission. The cushion is located alongside
the nose of the transmission, just forward of the transmission
mount. The original part was two metal discs connected by the
rubber cushion in tension. When it fails there isn’t any
connection to the engine. You can do a temporary fix with a coat
hanger wire. The replacement part has a metal safety cover that
allows some throttle movement when the rubber fails.

Here is where the cushion is located (red arrow). If the cushion
is broken, you can pop the ball off at the transmission bell-crank
(green arrow) and pull the piece out to work on that half. You
will need to push forward the rubber bellows to unscrew the
front end of the cushion.

Occasionally the link at the transmission bell-crank wears through
(blue arrow). Check that also.
"
"
(C) Dr. Ing. h.c. F. Porsche A.G.


Here is the replacement cushion:




The root cause of this, other than an old rubber part, is the
accelerator stop may be adjusted too far down. This stresses
the cushion when you are at full throttle. It should be adjusted
so when you push reasonably hard, the throttles are just full
open. Of course the floor board must be in good condition.

Best,
Grady
Old 06-18-2005, 02:34 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
Grady i found the problem....it is part 18 that snapped.....see link above by BD....

i need to know the name of this part....

thanx,

SvK

PS
grady u are always so helpful
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 02:38 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
Here is an illustration of the linkage from the engine forward.
The accelerator cushion is #10 (arrow).
This is the early style without the tin cover.
"
"
(C) Dr. Ing. h.c. F. Porsche A.G.

Best,
Grady
Old 06-18-2005, 02:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
#18 is “Throttle linkage, rear” 901.423.026.03. You usually can repair the damaged/worn part.

Best,
Grady
__________________
ANSWER PRICE LIST (as seen in someone's shop)
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50
Old 06-18-2005, 03:05 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
Thanx grady.......mine split at the ring/loopy bit....

How can I fix this?

SvK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 03:08 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Registered User
 
svonkampen's Avatar
 
Join Date: Mar 2004
Location: Carlsbad, So Cal
Posts: 1,316
80 frriiggggiiinnnn $ ?????????

please

SvK
__________________
SvK

1996 993
1968 911L 3.0 Carb'd.....(sold)
"I don't even know enough to know that I don't know."
Old 06-18-2005, 03:10 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
SvK,

The “ring/loopy bit” serves an important function. As the engine moves forward slightly it can slip and not add gas, it can only reduce the throttle opening. It also allows you to check for full throttle at the carbs while actuating the linkage only as far forward as the “ring/loopy bit”. To check for full throttle you need to actuate the accelerator pedal and adjust the stop.

Repair:

Probably the connection at the transmission bell-crank is equally worn and in need of repair. The best solution is to find some good used parts. You are going to want to replace the plastic bushings at the transmission bell-crank with new “while you are there.” Use this oppertunity to inspect the cushion. Even the updated part can have internal rubber failure that is difficult to detect.

Fixing the worn parts is difficult at best. I have seen some real Rube Goldberg attempts. The important thing is to not defeat the slip ability in the linkage. Put your creative hat on and post your solution.

Everyone needs to clean and grease that linkage spot at regular service; like oil change.

Best,
Grady
__________________
ANSWER PRICE LIST (as seen in someone's shop)
Answers - - - - - - - - - - - - - - - - $0.75
Answers (requiring thought) - - - - $1.25
Answers (correct) - - - - - - - - - - $12.50
Old 06-18-2005, 06:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Moderator
 
304065's Avatar
 
Join Date: Dec 2001
Posts: 9,501
I just cleaned and lubricated mine tonight (my linkage that is) and found that some PO had omitted to include the cushion! And I just got through replacing the one on the '71. . .
__________________
'66 911 #304065 Irischgruen
Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13)
Ex-'88 Carrera (Sold 3/29/02)
Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04)
Old 06-18-2005, 07:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 10:03 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.