• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

Gas pedal play

AUSMHLY

Obi Wan
Country flag
Offline
Hi all.

Well I'm getting down to finishing up the small stuff.
I know, it's all a miff.

My gas pedal has some play in it.

The spring seems to be doing it's job OK. I feel the tension and it returns it to it's resting place with pressure.

It has free movement, easy to depress about 1 1/4" till it engages; revs the engine.

How much free movement should it have?

If that is too much, what needs to be done to correct?
Parts worn out? If so, which ones should I look at?
Adjustment somewhere?

Not that I should think this will be an easy fix. That would be wrong. I've heard it may be a bit complex. Involving linkages and a wooden block? Ever wonder where these rumors start? Guilty.

Cheers, Roger
 

bighly

Jedi Knight
Offline
Roger,

A few things to consider where the play can be introduced.

1> Loose lever where left hand firewall linkage connects to rod from pedal below.
2> Bushings on rod that runs the length of the firewall just above the tranny tunnel front.
3> Bushings at the pedals

I'll try to find some pics
 

bighly

Jedi Knight
Offline
Roger,

Here is a pic but lets also work from the Moss online diagram for Motor, Engine Controls, BT7 twin carbs.
moss web page

The Left Hand Drive pedal assembly (#1 in diagram) has a lever on it and a flat part of the end of the shaft. It notoriously gets loose and cannot be tightened very easily and slips. Some will tack weld this but I choose to drill to one size larger opening and use a larger bolt with one flattened side. The bushings (#21 and #32) on the relay shaft are felt and are bad after 45 years. These should be replaced with nylon ones (Bill Bolton and others have these).

Reach behind and under the firewall and see if the shaft moves up and down, if so the bushings are bad. These bolts are tough to get to but it can be done and may require a slight bending of the bracket (#31) to remove. Consider replacing these with allen heads so the reinstallation and next custodian/owner has an easier go of it. (Tip: If your tranny is out and the tunnel is removed it is easier to get to).

My bet is on the slipping lever attached to the pedal assembly just as it goes into the engine compartment from the pedal box.

Hope I am making sense here.
 

Attachments

  • 279473-fig05.jpg
    279473-fig05.jpg
    85.6 KB · Views: 111

bighly

Jedi Knight
Offline
[ QUOTE ]
Pictures would be great!
Thank you!

[/ QUOTE ]
Here is one of the lever that slips. You can just see the shiny nut down in the depths below the linkage. This is tough to get to.
 

Attachments

  • 279485-S_throttle-0001.JPG
    279485-S_throttle-0001.JPG
    56.7 KB · Views: 123

bighly

Jedi Knight
Offline
[ QUOTE ]
Pictures would be great!
Thank you!

[/ QUOTE ]
And here is one of the relay shaft on one side where the bushing gets replaced from felt to nylon. I had to bend this away from the firewall slightly to get a tool in there. This picture was taken blindly by just reaching the camera down and snapping. How are your contortion skills Rog?
 

Attachments

  • 279487-S_throttle-0003.JPG
    279487-S_throttle-0003.JPG
    62.2 KB · Views: 107

Dave Richards

Jedi Knight
Country flag
Offline
I've found that the British "Haynes" manual does an OK job of covering this topic. It takes a while to understand it, but it covers all the bases, I think. I've been able to replace throttle bushings and adjust pedal position.
 

bighly

Jedi Knight
Offline
[ QUOTE ]
Roger,

A very good technical article on throttle linkage repair and set up here:

https://www.vintage-sportscar-touring.ca/technical.html

Cheers,
John

[/ QUOTE ]

Thanks for the link John. I could not find it. One of the pics I posted came from Mr Finespanner as you can see. All I had before was a few of the pictures without the text.
 

Keoke

Great Pumpkin
Country flag
Offline
[ QUOTE ]
Bush 60 on the Moss page is normally a weak rubber grommet which causes a lot of lost motion. Easy to see as well.

good luck

[/ QUOTE ]

I think you are referring to "Item # 59 " which is not really shown correctly but is the only one easily seen.---Keoke
 

Johnny

Darth Vader
Country flag
Offline
There's a third bushing inside the pedal shaft where it just exits the footwell, that too should be replaced. I just went through removing the long shaft up under the dash. The outer bolts were easy, the inner bolts difficult. I cut a large hole (approx. 1") from inside of the cockpit to facilitate access to the remaining 2 bolts. The hole is covered up with carpeting and insulation and a suitable cover/plug will be needed when done. While the linkage is out of the car do weld the brackets where they belong, tightening them from the bolts provided just won't work.
Good Luck Roger
 

bighly

Jedi Knight
Offline
[ QUOTE ]
There's a third bushing inside the pedal shaft where it just exits the footwell, that too should be replaced. I just went through removing the long shaft up under the dash. The outer bolts were easy, the inner bolts difficult. I cut a large hole (approx. 1") from inside of the cockpit to facilitate access to the remaining 2 bolts. The hole is covered up with carpeting and insulation and a suitable cover/plug will be needed when done. While the linkage is out of the car do weld the brackets where they belong, tightening them from the bolts provided just won't work.
Good Luck Roger

[/ QUOTE ]

No need to cut holes. This is soft metal and you can simply bend the bracket slightly to get a small tool on. Once off bend them back and change from bolts to hex bolts when reinstalling.
 

Richard3000

Member
Offline
[ QUOTE ]
[ QUOTE ]
Bush 60 on the Moss page is normally a weak rubber grommet which causes a lot of lost motion. Easy to see as well.

good luck

[/ QUOTE ]

I think you are referring to "Item # 59 " which is not really shown correctly but is the only one easily seen.---Keoke

[/ QUOTE ]


Nope, I definitely mean 'bush 60'
 

Dave Russell

Yoda - R.I.P
Gold
Offline
[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
Bush 60 on the Moss page is normally a weak rubber grommet which causes a lot of lost motion. Easy to see as well.

good luck

[/ QUOTE ]

I think you are referring to "Item # 59 " which is not really shown correctly but is the only one easily seen.---Keoke

[/ QUOTE ]


Nope, I definitely mean 'bush 60'

[/ QUOTE ]
Now you guys have me confused - again? The catalog shows bush 60 & housing 61 as being for a RHD BJ8.

It shows item 59 as a bush/housing for a LHD BJ8. I think Roger's car is a LHD BJ8. Catalog screwed up? or just me?
D
 

Keoke

Great Pumpkin
Country flag
Offline
--------------Dave ????----Keoke- /ubbthreads/images/graemlins/grin.gif
 

Richard3000

Member
Offline
Oops, sorry to confuse anybody. I was looking at the Moss page which is like my BT7. If I'd have checked I'd have seen we were talking about a BJ8....
 
Similar threads
Thread starter Title Forum Replies Date
R TR2/3/3A Gas pedal pad for TR-2 Triumph 3
BierRunner TR6 TR6 Gas Pedal Triumph 4
J For Sale Triumph Tr 2/3 Gas Pedal Triumph Classifieds 1
D Gas Pedal Pad Jaguar 7
S TR2/3/3A gas pedal rod Triumph 2
F Gas pedal linkage BJ8 Austin Healey 6
K TR2/3/3A Refresh...main reson why idle will lower when kicking the gas pedal? Triumph 3
Rut 1500 gas pedal for sale Spridgets 7
I TR2/3/3A Gas Pedal - Rubber Cover? Triumph 6
L Hanging gas pedal in BE Spridgets 22
S TR2/3/3A Tr3 Gas pedal height from floor Triumph 15
jjbunn E-Type gas pedal travel Jaguar 11
J Spitfire Spitfire MK1 or 2 gas pedal bushings Triumph 11
bcbug Bugeye gas pedal Spridgets 6
S Gas Pedal pad for 76 Midget Spridgets 3
T Pictures of Bugeye gas pedal and linkage Spridgets 2
jvandyke gas pedal bolts? Spridgets 5
J Mg Midget 1500 gas pedal broke Spridgets 5
RickB Gas pedal sticking - maybe the cable? Spridgets 15
S TR2/3/3A Tr3 gas pedal Triumph 3
B gas, Brake, Clutch Pedal covers? Spridgets 8
bobh TR6 TR6 Gas Pedal Shaft Bushing Install Triumph 16
Radford The Paddy Hopkirk gas pedal - is it a good idea MG 7
S TR2/3/3A Tr3 gas pedal shaft socket Triumph 7
Celtic 77 MGB LeMans Gas filler MG 10
mctriumph General TR NEVER start a car with stale gas Triumph 0
TomMull GT6 Gas Tank Outlet Triumph 0
B TR6 Gas on spark plugs Triumph 7
Briancole702 MGB-GT 71 Mgb gt no gas in float bowls MG 1
edkap2002 TR6 gas tank sounds Triumph 8
MGTF1250Dave T-Series TF Gas Tank MG 6
B General MG 77 MIDGET Gas tank sending unit MG 1
G Wanted gas tank dip stick for mgtf 1555 MG Classifieds 1
Celtic 77 MGB Pessimistic Gas gague MG 10
B gas leak underneath the carburetor Restoration & Tools 2
T TR2/3/3A TR3 Gas Tank Grounding Triumph 9
P MGB Mgb gas tank cap MG 7
LAW75 Concours: Original Gas Hose Austin Healey 12
LAW75 Gas Odor Elimination Austin Healey 3
B TR4/4A GAS TANK FELT Triumph 14
Hamish Racing General Tech Petrol/Gas with high ethanol Triumph 3
edkap2002 TR6 gas smell Triumph 8
B Damaged threads in the gas tank Austin Healey 7
Jim_Stevens Off Topic Ethanol-free gas link Triumph 1
J TR2/3/3A TR3 gas tank mystery Triumph 5
Rob Glasgow New Gas Tank Austin Healey 8
T For Sale TR2 - TR3 Gas Cap for sale Triumph Classifieds 1
B TR4/4A Gas Tank color? Triumph 4
B BE vs. Later Model Gas tanks Spridgets 2
B How to clean the old gunk out of a Spridget gas tank? Spridgets 21

Similar threads

Top