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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 8:35 am Post subject: 73 Bus wont shift |
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Bus looks to be in neutral but it is in gear or between gears. I jacked up the rear end start it up clutch in wheels don't move, start to let clutch out and wheels start to move. Ive tried sticking screwdriver through Tranny filler hole and move gears, they look to be forward. Ive bumped the bus still nothing. I move the shifter but can never hit a gear. Any ideas? |
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aeromech Samba Member
Joined: January 24, 2006 Posts: 16922 Location: San Diego, California
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Posted: Sun Feb 26, 2017 9:16 am Post subject: Re: 73 Bus wont shift |
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I'd bet you have an issue in the nose cone. Either a worn out ball or broken bracket. You'll need to drop the engine and transmission to get access. Pretty cheap repair if that's the problem. _________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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hazetguy Samba Member
Joined: April 06, 2001 Posts: 10773 Location: iT StiNgeD iTseLf tO dEAd
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Posted: Sun Feb 26, 2017 10:09 am Post subject: Re: 73 Bus wont shift |
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you have, of course, checked the shifter coupler and the front shift rod bushing and where the shifter sets into the shift rod ball socket, to make sure they are not broken/missing parts/loose, correct?
don't go jamming a screwdriver into the trans, jeebus. _________________ thebucket: I invested in hoodride, now DBD won't return my call?
hazetguy: invested?
thebucket: Yeah Haze, its where people put money into a company in hopes of a return on their money |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 11:13 am Post subject: Re: 73 Bus wont shift |
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Lol, ya I didn't jam it in there just did what video says to do. I have made sure everything is connected but not worn. I vidoed the coupler while I was shifting and was only seeing the rod move in and out maybe an inch. |
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alman72 Samba Member
Joined: October 09, 2014 Posts: 2573 Location: MICHIGAN
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Posted: Sun Feb 26, 2017 11:40 am Post subject: Re: 73 Bus wont shift |
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recall somewhere that the wheels on the bus go round and round when jacked up and even when everything is ok. |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 11:48 am Post subject: Re: 73 Bus wont shift |
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That's a good one aeromech.....Any of you guys pull the engine and tranny? Looks to be a pain. |
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aeromech Samba Member
Joined: January 24, 2006 Posts: 16922 Location: San Diego, California
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Posted: Sun Feb 26, 2017 12:05 pm Post subject: Re: 73 Bus wont shift |
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Of course you'd want to rule out all the easy stuff first before going into the nose cone. I can post pics later to show the parts that wear out of break. _________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 12:18 pm Post subject: Re: 73 Bus wont shift |
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I appricate that. Do you think worn out bushings could cause what im experiencing? |
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hazetguy Samba Member
Joined: April 06, 2001 Posts: 10773 Location: iT StiNgeD iTseLf tO dEAd
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Posted: Sun Feb 26, 2017 12:42 pm Post subject: Re: 73 Bus wont shift |
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food for thought: i was just working at a shop this week when a '73 bus got dragged in on a flatbed. symptom? bus won't shift, stuck in gear.
a 2 minute diagnosis found that the front shift rod bushing was gone allowing the rod to drop down, the shifter ball was falling out of the cup on the shift rod. shift lockout plate worn.
new bushing and better lockout plate installed, shifter cleaned up, greased. result: bus repaired quickly and inexpensively.
is this your problem? don't know, but it surely couldn't hurt to look under the shifter to see what's going on.
better than jamming a screwdriver in the trans trying to get stuff to move. and there's a video of this? _________________ thebucket: I invested in hoodride, now DBD won't return my call?
hazetguy: invested?
thebucket: Yeah Haze, its where people put money into a company in hopes of a return on their money |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 1:28 pm Post subject: Re: 73 Bus wont shift |
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Yes sounds exactly like mine. Yes here is the link..https://youtu.be/_tUqRrm_3t8
Thanks for the help, I will keep u posted. |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 1:58 pm Post subject: Re: 73 Bus wont shift |
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What shifter ball are you reffering too? |
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aeromech Samba Member
Joined: January 24, 2006 Posts: 16922 Location: San Diego, California
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Posted: Sun Feb 26, 2017 2:18 pm Post subject: Re: 73 Bus wont shift |
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78 Busdriver wrote: |
What shifter ball are you reffering too? |
I've repaired about three transmissions where things went wrong in the nose cone. Here's a 1974 where the bracket broke and was welded
Nose cone
Broken bracket
Here's a different bus where the plastic ball wore out
New metal ball $10
Here's a different bus that has a worn ball. It was having shifting problems
_________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Sun Feb 26, 2017 4:09 pm Post subject: Re: 73 Bus wont shift |
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The front bushing is gone. The shifter ball doesn't seem to be falling out of the cup though. One thing I thought was weird was we could push the bus without the clutch in? We noticed the pulley moving while we where pushing and realized we took the 2x4 off of the clutch.is this normal or does this help to know what gear its in? If the only problem is the missing bushing or worn plate wouldn't we be able to just push the rod in and out by hand to get it out of gear? |
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78 Busdriver Samba Member
Joined: February 26, 2017 Posts: 149 Location: KC
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Posted: Thu Aug 17, 2017 7:18 am Post subject: Re: 73 Bus wont shift |
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It did ended up being the intermediate shift lever bracket that was broken. |
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Tcash Samba Member
Joined: July 20, 2011 Posts: 12844 Location: San Jose, California, USA
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Posted: Thu Aug 17, 2017 9:44 am Post subject: Re: 73 Bus wont shift |
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For those that don't know what a intermediate shift lever bracket is.
The symptoms are usually. Everything is moving up front, but the transmission is stuck in gear or stuck in neutral.
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