| Author |
Message |
john esarey (Matlacha)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, November 01, 2005 - 8:47 pm: | |
I have a MCI 5 that the clutch peddle wants to stick to the floor when shifting. Bus has been setting for a while but just made a 900 mile trip. The problem seems to be getting worst. I have grease all the fitting from front to rear....and ideas? |
Sojourner (Jjimage)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, November 02, 2005 - 1:02 am: | |
Perhaps your clutch pedal’s spring either weak or broken or missing under floor board.
Maintenance manual shows this. It labor & time saving to have one on hand.
Manual clutch have assist air cylinder on MCI-8. Your MCI-5 may be equips the same.
Important that cylinder is alignment vertically with center of bell housing’s clutch shaft. Not above or below it.
One-way air cylinder need oiled (sponge inside cylinder) every 30,000 miles. It could be hanging up.
Make sure nothing is dragging or metal rubbing on long linkages.
Recheck all ends & bearing (including bell housing’s shaft bearing) for binding even after lubed.
Please let us know what cure your problem.
FWIW
Sojourn for Christ, Jerry |
HondoJoeMC5
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, November 05, 2005 - 9:42 am: | |
Jerry,
How does the one-way air cylinder take oil & work???
My same MC5A clutch is not easy to depress and takes leg/knee force to keep held down (when in traffic, etc.)
Perhaps this air cylinder may help hold it down & aid in depressing.
I got under there today & took a brief look but as expected is too dirty/greasy.
Plan to ramp it up and work on it later.
Any tips? Should I remove it to work on bench?
Maybe complete replacements are available, but don't know.
Thanks, HondoJoe MC5 (RV conversion in SoCA For sale) |
john esarey (Matlacha)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, November 06, 2005 - 6:42 am: | |
Found my problem...too much air pressure on clutch cylinder. System was running 130 psi+ set air pressure to 120 psi and clutch works great.
Thanks for all suggestions thats how I seen what was going on..
HondoJoe check and make sure yours is getting air.... air line next to 24 volt panel behind generator. Mine has a valve on it.
John |
HondoJoeMC5
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 07, 2005 - 10:38 am: | |
Hi John,
Thanks for the tip on the valve location.
With that I checked & found it to be open.
The feed valve is on a tee that also serves air to a elec. air solenoind located on the firewall next to the big 24v panel. Do you know what that air solenoid is for?
At the same time I got everything all greased up on the clutch pivots, etc.
I however do not think the air cylinder is assisting the clutch depression. I suspect the airline or other could be rusted shut. So I will check this next.
I tried the clutch several times w/o air pressure. Then built up air & tried again. I could feel no difference.
Question is.. Can you notice a distinct difference pushing the clutch in with and without air pressure??????
Has anyone replaced the air cylinder & know the cost of it?? It may be serviceable but I guess it is original & crusty, etc...thus start fresh...
John, you have motivated me into action!!
This BB is great for that for me. I could have left it as-is but sure prefer to make it work rite/better.
Thanks again, HondoJoe MC5A 1966 Old Greyhound |
john esarey (Matlacha)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 07, 2005 - 11:12 am: | |
HondoJoe......My bus is a 1968 old Greyhound so should be very close in style...My clutch is a bear to push w/o air pressure so I understand your problem...
Somewhere on the internet I saw parts for the MCI s and the air cylinder cost was around 100.00 exchanged.
Do a search for MCI clutch and see if you find it.
Good luck
John |
HondoJoeMC5
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 07, 2005 - 10:31 pm: | |
John,
I ordered the air cylinder today from CJ Bus Repair in Bloomington, MN. It was $99.00. I do not think there is a core charge.
JD Dickenson, Mgr indicated best to replace as they usually are rusted & seized up & proper adjustment of all the geometry setup important.
CJ Bus Repair is really helpful for tips & parts, especially when I am on the road & need parts fast via overnite delivery. 800-228-7349
I look forward to the clutch improvement.
Thanks again, Hondo Joe |