how do i fix my 318 jd

Discussion in 'Mechanic and Repair' started by grass disaster, Sep 14, 2009.

  1. grass disaster

    grass disaster LawnSite Silver Member
    Posts: 2,578

    it it revs high when the motor warms up.

    was told the governor on the cam was wore out and need to pull the motor and replace some parts.

    whats this going to take to fix?
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Is this the B43 or P218 ?

    Has anyone tried to adjust the governor ?
     
    Last edited: Sep 14, 2009
  3. grass disaster

    grass disaster LawnSite Silver Member
    Posts: 2,578

    its an onan like 1992 maybe
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Well..... I had a blond moment, The governor on either the above Onans is not adjustable. Only the sensitivity and hi/low governed rpm's can be adjusted.

    So, What you were told is most likely what will need to be done.

    Here is the cam just to give you a idea;


    [​IMG]

    Part numbers 2 and 9 are most likely the worn parts.

    Here's what the specs should be;


    [​IMG]


    The flywheel cover and flywheel must be removed then the charging system stator and timing cover, Then the governor can be worked on without removing the cam from the engine unless there is cam gear wear/damage.
     
  5. grass disaster

    grass disaster LawnSite Silver Member
    Posts: 2,578

    so if i add some thicker oil would that help. i only use it for aerating and run it at real low rpm's anyway.
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Not likely thicker oil will help already worn parts, Just use it as is but be ready to kill it if it over revs so the rods don't decide to install a window in the side.
     
  7. East Coast Lawn Choppers

    East Coast Lawn Choppers LawnSite Member
    Posts: 134


    We have had about 10 of the Kawasakis so far this year that #5 the plastic ball spacer wore out and they rev until they blow up... which is what happened to 4 of the ones we got in for repair (rods right thru). All the balls get wedged and they will rev wide open...
    Not sure if the do the same thing or not... but thought it was worth mentioning
     
    Last edited: Sep 15, 2009
  8. grass disaster

    grass disaster LawnSite Silver Member
    Posts: 2,578

    can this be replaced by a lx790 linamar?
     

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