New clutch grinds going into gear - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
LinkBack Thread Tools Display Modes
#1 (permalink) Old 08-12-2009, 11:40 AM
n00b
 
Join Date: May 2008
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
mising is on a distinguished road
(Thread Starter)
New clutch grinds going into gear

I just performed a clutch job on my son's 1995 318ti. We replaced the plastic pivot pin, clutch assembly, master and slave cylinders, and hydraulic lines. Our problem is that the clutch grinds when going into any gear. Once in gear and the clutch is released it drives fine and does not seem to slip. Did we not bleed the system well enough, or is there something misaligned in the clutch assembly. To me it seems as if the clutch is not being disengaged enough by the slave cylinder. We have tried all the bleeding procedures we could find on this forum, and the pedal seems firm enough, but still grinding when shifting.
Thanks in advance for any helpful suggestions.
mising is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 08-12-2009, 01:04 PM
Mr. Clean
 
BimmerE39's Avatar
 
Join Date: Jan 2009
Location: Danbury, Connecticut
Posts: 1,817
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BimmerE39 will become famous soon enough
Garage
Was the slave cylinder new when you installed it?
BimmerE39 is offline  
#3 (permalink) Old 08-12-2009, 04:02 PM
1st Gear Member
 
CanadianWraith's Avatar
 
Join Date: May 2009
Location: London, Ontario Canada
Posts: 258
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
CanadianWraith is on a distinguished road
did you replace the throwout bearing with a new one?

CanadianWraith is offline  
#4 (permalink) Old 08-13-2009, 03:06 AM
Help from over the pond
 
marti5's Avatar
 
Join Date: Sep 2008
Location: IPSWICH. U.K.
Posts: 3,242
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
marti5 is on a distinguished road
There must be air in the system somewhere.

VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL

I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!
marti5 is offline  
#5 (permalink) Old 08-13-2009, 07:42 AM
n00b
 
Join Date: May 2008
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
mising is on a distinguished road
(Thread Starter)
Was the slave cylinder new when you installed it?
did you replace the throwout bearing with a new one?
New parts: clutch disc, pressure plate, throwout bearing, pilot bushing, clutch fork pivot, hydraulic line to slave cylinder, slave cylinder and master cylinder, DOT4 brake fluid.

There must be air in the system somewhere.
That is what I was thinking, aside from motorcycles, this is the first hydraulic clutch that I have dealt with, so obviously I am missing something somewhere in the whole air removal process. Oh well, will try again this evening.

Thanks for the responses, and keep them coming if you have any tips or suggestions.
mising is offline  
#6 (permalink) Old 08-13-2009, 11:13 AM
Mr. Clean
 
BimmerE39's Avatar
 
Join Date: Jan 2009
Location: Danbury, Connecticut
Posts: 1,817
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BimmerE39 will become famous soon enough
Garage
Yeah, I agree with marti5 on air bleeding in the system. I was questioning that slave master cylinder because I've known some used ones to have issues somewhat similar to what you described earlier. Definitely try bleeding the system and see where that gets you!
BimmerE39 is offline  
#7 (permalink) Old 08-13-2009, 01:03 PM
2nd Gear Member
 
Join Date: Jul 2008
Posts: 374
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
FCPGroton is on a distinguished road
Keep us posted if re-bleeding the clutch fixes the issue. I am curious to hear the out come.

FCP Groton
877-634-0063 | info@fcpgroton.com

FCP Euro - European Car Parts Specialists
FCP Import - Import Replacement Car Parts
FCPGroton is offline  
#8 (permalink) Old 08-13-2009, 02:25 PM
n00b
 
Join Date: May 2008
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
mising is on a distinguished road
(Thread Starter)
Keep us posted if re-bleeding the clutch fixes the issue. I am curious to hear the out come.

Will do.

This is the process I have used so far:
Ensure resevoir is full
connect pressure bleeder to resevoir
attach hose to bleeder valve on slave cyl
place other end of hose in collection bottle
apply pressure to system with pressure bleeder
crack open bleeder valve
let fluid bleed through under pressure until no more bubbles ensuring resevoir stays full
close bleeder screw

unbolt slave cyl from tranny
position bleeder screw so it is at top
open bleeder
compress pushrod
close bleeder
repeat until no air comes out
reinstall slave cylinder
at this point I will usually have a fairly solid pedal

Is this correct, or am I doing too much or skipping a step?
mising is offline  
#9 (permalink) Old 08-15-2009, 08:45 PM
5th Gear Member
 
darkhorse737's Avatar
 
Join Date: May 2008
Location: San Francisco, CA
Posts: 1,494
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
darkhorse737 is on a distinguished road
Red face the bleed

unbolt slave cyl from tranny
position bleeder screw so it is at top
open bleeder
compress pushrod
close bleeder
repeat until no air comes out
reinstall slave cylinder

<<< not too sure about this part of the process.

-slave cylinder should be bolted to where it belongs.
-Fill your reservoir.
-have an assistant pump your pedal, say 10 times and HOLD IT DOWN.
-now open the bleeder from under and let all trapped air out; then close bleeder.
-pump another 10 times, and hold the pedal down.
-open bleeder, let air out, and close bleeder.
repeat the sequence 4 -6 times and you should be fine.

*if still not ok, have your assistant press clutch pedal, and physically watch the rod to see whether it is actually moving. If no, either clutch maste or clutch slave is defective...

Cheers
darkhorse737 is offline  
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E36)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Selector Rod Grinds After SSK install dannyb 3-Series (E21, E30) 2 07-22-2009 11:56 AM
Clutch assembly going or clutch cynlinder? Brian325i 3-Series (E36) 4 06-10-2009 06:03 PM
grinding in 1st and second gear even when clutch is fully pressed?!! SpeedInfusion 3-Series (E36) 8 04-03-2006 06:39 PM
Clutch Chatter (grabbing) In First Gear 318is Mario Milewski 3-Series (E36) 1 02-22-2005 12:39 PM
Clutch not angaging on reverse gear! 4tunesfool 3-Series (E46, E90) 7 09-17-2004 08:41 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome