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Ecklers AutoMotive
Username Post: Clutch        (Topic#354732)
Rboxcar 
Poster
Posts: 3

Reg: 01-02-19
01-05-19 12:28 PM - Post#2756646    

Clutch not fully disengaging in neutral



 
Ecklers AutoMotive
Keith_Knox 
Moderator and "17th Year" Gold Supporting Member
Posts: 6098
Keith_Knox
Age: 77
Loc: Napa, Ca USA
Reg: 04-02-00
01-05-19 03:29 PM - Post#2756657    
    In response to Rboxcar

Welcome to ChevyTalk. Please post your question in the correct forum below. Browse the forums to find the correct one.
Also provide what you are working on. IE Year, Engine Transmission and any other vehicle info.

29-41, 42-48, 49-54 Moderator
1948 Chevy Fleetmaster Coupe Purchased 6/2010. Stock with rebuilt 52 216 installed May 1966.
1946 Chevy 1/2 ton pickup, stock. Purchased 11/18/17.
1962 Ranchero Purchased 4/2017 221 V8 Auto. Sold 9/20/18
2013 F150


 
rcr3 
"15th Year" Silver Supporting Member
Posts: 3081
rcr3
Age: 67
Loc: MANHEIM PA. U.S.A.
Reg: 11-24-02
01-06-19 05:42 AM - Post#2756688    
    In response to Rboxcar

OY !!!

'12 Cruze RS LTZ
'73 Nova hatchback Sold 12/23/12
'37 Chevy cp.SOLD!!6/7/14
'74 Nova Custom cp.
'73 Nova pro-street project
'17 Chevy Trax LT
'00 S10 Ex cab
'06 Z71 Sierra Ex Cab
'67 Camaro survivor




 
Rboxcar 
Poster
Posts: 3

Reg: 01-02-19
01-06-19 07:11 AM - Post#2756691    
    In response to Keith_Knox

1955 Chevy. 327. Muncie 4 speed. Clutch not fully disengaging with pedal out and in neutral. Car moves a little and whirring sound



 
Rick_L 
Honored Member
Posts: 27574
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
01-06-19 06:58 PM - Post#2756740    
    In response to Rboxcar

You need to adjust the clutch linkage.



 
Rboxcar 
Poster
Posts: 3

Reg: 01-02-19
01-06-19 08:47 PM - Post#2756748    
    In response to Rick_L

I've adjusted it both ways. No difference!



 
craig32 
Frequent Contributor
Posts: 1300

Age: 57
Loc: PA
Reg: 08-05-07
01-07-19 05:35 PM - Post#2756810    
    In response to Rboxcar

  • Rboxcar Said:
1955 Chevy. 327. Muncie 4 speed. Clutch not fully disengaging with pedal out and in neutral. Car moves a little and whirring sound


If the pedal is out, the clutch is engaged. Depressing the pedal disengages the clutch. If it is moving with the transmission in neutral, it sounds like a transmission problem.




 
Rick_L 
Honored Member
Posts: 27574
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
01-07-19 06:55 PM - Post#2756820    
    In response to Rboxcar

If the clutch won't disengage, the rod from the z-bar to the clutch fork needs to be adjusted longer.

You also need the correct clutch fork, correct length throwout bearing, and for everything else in the clutch linkage to be correct.

One thing that can happen on 55-57 clutch linkage is that the splined lever that attaches to the clutch pedal shaft can slip. You'll have to fix that to get the clutch to disengage if that's the problem. This lever is up under the dash.



 
japete92 
"5th Year" Silver Supporting Member
Posts: 1158
japete92
Loc: No. Virginia
Reg: 01-18-13
01-09-19 08:46 AM - Post#2756952    
    In response to Rboxcar

  • Rboxcar Said:
1955 Chevy. 327. Muncie 4 speed. Clutch not fully disengaging with pedal out and in neutral. Car moves a little and whirring sound




Appears from your description that the flywheel is in contact with the clutch disc (with the pedal 'out') as it should be. But it is slipping. Also, if your car is 'moving' while 'in neutral', you are NOT actually 'in neutral'; the car MUST be in gear to move. Two problems (or more).

The first if not solved by adjustment, is likely due to broken, wrong, or improperly installed parts. Throw out bearing? Clutch fork? Z bar? Push rods (upper and/or lower)? Pedals?

The second may be a shifter problem. Again, if not solved by proper adjustment/alignment, caused by broken, wrong, or improperly installed parts.

In the condition you describe (moving while in neutral), the mainshaft of the transmission is rotating, AND so is the countershaft. In 'neutral', that does not happen. If not the shifter, I would start by removing the cover and see what's going on.

I've attached some info you may find helpful. I've attached Hurst info because that is what I have. You did not say what shifter you have.

Pete





Attachment: muncie_manual.pdf (237.4 KB) 6 View(s)
Attachment: hurst_install_inst_huu-3733163.pdf (60.43 KB) 6 View(s)



 
f.i.57chevynut 
Frequent Contributor
Posts: 1527
f.i.57chevynut
Loc: Granada Hills, CA
Reg: 03-04-09
01-16-19 09:42 PM - Post#2757580    
    In response to japete92

I had a customer who had a Muncie 4 speed in a 64 Chevy. He said the car wanted to move even though the shifter was in neutral. It turns out the bearings were so loose that it allowed the input shaft to move forward and the main shaft to move back and the 4th gear synchro keys slipped out of the slots in the brass ring and pushed the brass ring against the input synchro cone and would make the car creep. This might be your problem.


Tom Ordway tom@57chevys.com If you don't drive it, why have it?
http://www.americantorque.com/page/0/139/


 
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