Heavy Equipment Forums Heavy Equipment Community

CAT 320 neutral safety switch

Big Iron ยท 2012-06-27 16:17

320B s/n BR008xx i have replaced the micro-switch at the N/S lever and rebuilt the N/S valve under the cab. the N/S works fine when cold, once the hyd oil warms up it will sometimes work immediately and some times it will take 2 to 30 seconds to activate the hyd system. it will always work its just a mater of time. once it took 4 or 5 minutes to activate. any ideas????????????????:Banghead:Banghead

Replies4
  1. #1Big Iron2012-06-27 22:07

    sorry bout that i left the 5 off the s/n it is a 5br008xx.

  2. #2Per Eriksson2012-06-28 17:30

    When you rebuilt the valve, did you check the spool so it moves freely in the body when warm as well as cold? You can also interchange the solenoidvalve with another one, 121-1491 is also used for swing brake and travel speed.

  3. #3Big Iron2012-06-30 13:47

    thanks i will check that

  4. #4rafi2012-07-01 21:22

    hi all. Just ask, did display shown actual position lever lock or unlock, i mean no delay