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clutch in 670 not releasing

Discussion in 'Volvo Forum' started by jlawall, Jul 4, 2011.

  1. Jul 4, 2011 #1
    jlawall

    jlawall Light Load Member

    63
    15
    Jan 29, 2011
    wapwallopen pa
    0
    I have checked the fluid in resevoir. Full and have never had to add. If I push pedal to floor when stopped tranny grinds when trying to get into gear. Shut off engine, shift into 1st,start engine truck wants to creep ahead as if cltch is partially engaged. This happened once before in stop and go traffic on Cross-Bronx, 1hour to go 1mile,but problem went away and clutch functioned normally for past 5 months till today.
     
    jlawall, Jul 4, 2011
    jlawall, Jul 4, 2011
    #1
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  3. Jul 4, 2011 #2
    123456

    123456 Road Train Member

    10,555
    5,743
    Oct 22, 2010
    32179
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    That occurance 5 months ago may have been your warning sign.

    Mileage ?

    Transmission ?
     
    123456, Jul 4, 2011
    123456, Jul 4, 2011
    #2
  4. Jul 4, 2011 #3
    jlawall

    jlawall Light Load Member

    63
    15
    Jan 29, 2011
    wapwallopen pa
    0
    There are 600,000 miles on the truck. 18 speed. I just slid the slave cylinder out and cleaned out some sand and crap along with a piece of a spring. I expect what has happened is another piece of spring is lodged between the discs. Not looking forward to r/r clutch this afternoon. Wondering if Iremove slave cylinder and push clutch lever by hand if I'd get any additional travel, possibly enough to let piece of spring dislodge and drop out?
     
    jlawall, Jul 4, 2011
    jlawall, Jul 4, 2011
    #3
  5. Jul 4, 2011 #4
    Trudger

    Trudger Light Load Member

    122
    42
    Jun 26, 2011
    Beaverton, Oregon
    0
    I had a 770 a few years back and even though the resevoir was full, the fluid wasn't getting through. $400 later at the shop, it got through...lol
     
    Trudger, Jul 4, 2011
    Trudger, Jul 4, 2011
    #4
  7. Jul 4, 2011 #5
    midwestconnection

    midwestconnection Bobtail Member

    39
    1
    Jun 23, 2011
    Detroit Lakes, Minnesota
    0
    We just bled mine once for a lot of pumps and got it somewhat better and then after driving it a few miles we did it again a bunch of times and it works perfect now.

    They occasionally get air in the system

    My truck was laid on it's side and all of the fluid ran out of the reservoir cap that had a crack in it, that's how mine got so much air.

    It took a lot of pumping and brake fluid to get it right and then a new cap.
     
    midwestconnection, Jul 4, 2011
    midwestconnection, Jul 4, 2011
    #5
  8. Jul 4, 2011 #6
    Trudger

    Trudger Light Load Member

    122
    42
    Jun 26, 2011
    Beaverton, Oregon
    0
    'least it worked.
     
    Trudger, Jul 4, 2011
    Trudger, Jul 4, 2011
    #6
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