PD 4107 409 accelerator help

[TheMightyQuinn]

Hello all, name here is Josh and im new to the world of "real" buses and their massive diesel powerplants. I was recently given a running 1966 GM PD 4107 to fix up an use as my new home. Question, ( among the thousands i have), is how does the accelerator mechanism work and how is it routed? Mine is completely stuck up front. I can move the lever at the engine, but can stand on the pedal and it doesnt budge. Ive looked under the drivers seat up under the bus and can see the pedal cluster and the rod going to the back. I had a friend push, or try rather, while i watched from underneath. The pedal assembly is actually pushing the rod, and the rod flexes but doesnt move. Help? I have been digging for days online and cant get any technical info. Workshop manuals are on the way. Thanks in advance! Very excited!

Also, any input on history of my bus? Build number 409. Parts suppliers?

[MB LeMirage]

Welcome to the Bus world. I am sure one of the many GM gurus here will give you what you need and again, welcome and enjoy.
Ryan.

[TheMightyQuinn]

Welcome to the Bus world. I am sure one of the many GM gurus here will give you what you need and again, welcome and enjoy.
Ryan.

Thank you! Looking forward to learning anything and everything about this bus and how it works!

[daddyoften]

My 4107 the p.o. Converted it to air throttle. I don't know where you get the parts to do this but I love it! Maybe someone here can point you in that direction. I would think a 35+ foot cable would be a nightmare!
Eric

Sent from my XT1254 using Tapatalk

[eagle19952]

My 4107 the p.o. Converted it to air throttle. I don't know where you get the parts to do this but I love it! Maybe someone here can point you in that direction. I would think a 35+ foot cable would be a nightmare!
Eric

Sent from my XT1254 using Tapatalk

mine has a 40 ft cable... no nightmare, they have worked well for ever...

[chessie4905]

Check in the compartment under drivers area. You'll need a good light. Look for a rusty or seized bellcrank that attaches to a cable or rod. Have you attempted to start the engine yet? If not, disconnect cable or rod from lever at governor. Make sure the governor lever moves freely and if it doesn't move, check and see if throttle pedal now moves. BTW, do NOT try to start till governor or fuel rack issues are resolved.( Couldn't tell from your post whether coach runs)

[pabusnut]

Don't ignore the simple stuff either!  On my 4905, the pivot point at the floor was corroded(dissimilar metals galvanic action) and was binding there.  I did end up pulling the whole cable and cleaning it with a rotary wire brush before re-installing(not an easy job, but doable)

Steve

[TheMightyQuinn]

Check in the compartment under drivers area. You'll need a good light. Look for a rusty or seized bellcrank that attaches to a cable or rod. Have you attempted to start the engine yet? If not, disconnect cable or rod from lever at governor. Make sure the governor lever moves freely and if it doesn't move, check and see if throttle pedal now moves. BTW, do NOT try to start till governor or fuel rack issues are resolved.( Couldn't tell from your post whether coach runs)

Ok ive been in that compartment a few times to look around. I can see it with a flashlight but ill try to crawl in there tomorrow to investigate. She kinda runs. Took 2 cans of starting fluid and 2 new batteries to move her from her rotting place in a field for six years. Got it moving around the yard and running well until it ran out of fuel... Now im trying to figure oit how to prime this 8V71 with cartridge filters. I know nothing about diesel engines.
Ive disconnected the cable at the engine and its just as stiff as it is at the pedal, and is a cable at least up to the firewall. I think there is some panels i can get to from inside the rear room to maybe inspect the cable better. Gotta get to the rear room first...

Don't ignore the simple stuff either!  On my 4905, the pivot point at the floor was corroded(dissimilar metals galvanic action) and was binding there.  I did end up pulling the whole cable and cleaning it with a rotary wire brush before re-installing(not an easy job, but doable)

Steve

I sprayed the base with a bunch of penetrating oil. The brake pedal is flawless.

Thanks for the replies and advice. Ill see what i can find in the morning and post after i get the interior at least bareable and not frightning.

Any advice on priming the old style 8V71 setup? Has 2 big red cans mounted on the passenger side up high. I dont see any type of pump or anything.
Thanks all. Ill try to get some of my millions of pictures up as soon as i figure out how to from my iphone

[RJ]

Josh -

PD4107-409 was delivered new in July of 1966 as fleet number 5009 to Southern Greyhound Lines, HQ'd in Chicago, IL.  The Southern division covered most of the SE US, as far west as roughly the Mississippi River and as far north as Columbus, OH and Pittsburg, PA.  409 probably stayed in the fleet until after the summer peak season of 1976, at which time it would have been sold off to a second-tier operator.

The best source for info and parts for your coach would be Luke at US Coach in NJ. 1-888-262-2434 is his toll-free number, which you should program into your phone and/or written address book.

FWIW & HTH. . .



PS:  How about adding your home/base city/state to your signature line?  That will go a long way helping us help you. 

[TheMightyQuinn]

Josh -

PD4107-409 was delivered new in July of 1966 as fleet number 5009 to Southern Greyhound Lines, HQ'd in Chicago, IL.  The Southern division covered most of the SE US, as far west as roughly the Mississippi River and as far north as Columbus, OH and Pittsburg, PA.  409 probably stayed in the fleet until after the summer peak season of 1976, at which time it would have been sold off to a second-tier operator.

The best source for info and parts for your coach would be Luke at US Coach in NJ. 1-888-262-2434 is his toll-free number, which you should program into your phone and/or written address book.

FWIW & HTH. . .



PS:  How about adding your home/base city/state to your signature line?  That will go a long way helping us help you. 

Wicked awesome! Thank you!

[Charles Seaton]

You haven't lived until you've driven a few miles controlling the accelerator mechanism at rear of coach with a rope from up front.  Works great with old GM fishbowls (if you're not traveling too far).

- Seaton

[chessie4905]

Between the headlamps,there should be a panel about 6 inches high x about 3 feet. They use it to attach various license plates. If you remove the panel, there as a plate about 5x7 inches.Remove it and you should have better access to the throttle cable to work on it. Be careful with running that engine much till its checked out. If you get a stuck injector, it could run away and cause serious mechanical damage to the engine

[TheMightyQuinn]

You haven't lived until you've driven a few miles controlling the accelerator mechanism at rear of coach with a rope from up front.  Works great with old GM fishbowls (if you're not traveling too far).

- Seaton

Lol! I can definitely relate to that having come from the vintage VW bus world!

Between the headlamps,there should be a panel about 6 inches high x about 3 feet. They use it to attach various license plates. If you remove the panel, there as a plate about 5x7 inches.Remove it and you should have better access to the throttle cable to work on it. Be careful with running that engine much till its checked out. If you get a stuck injector, it could run away and cause serious mechanical damage to the engine

Cool. Ill check that out today. The dumpster is getting removed today so it has to move. Thanks!