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#1 Plow fluid change early 7'6" Poly stnd

Discussion in 'Boss Plows Discussion' started by Avitare, Nov 15, 2007.

  1. The manual isnt real clear.
    And I have to disconnect my lift cylinder to get the cover off,..

    Do I re-attach the cylinder (extended with plow lowered) before refilling
    the pump reservoir ??

    I dont have the external filler on this '99 model. So I have to use the
    'vent' cap to check the level.
    Do I fill to 3/4 inch from the ?top of the hole ??

    As I recall, last time it appeared I overfilled.
    But, that is part of the problem -- I am trying to recall.
    Admit this is probably my 4th time since '99,.. but suffer CRS

    Wish the cover could come off with the cylinder attached or convert to an external filler.
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    If your just doing a resivior drain and refill:

    Disconnect the lift cylinder and remove the cover..
    Drain the reservoir and refill it to 3/4" from the top.
    Re attach the lift cylinder (leave the cover off).
    Operate the pow through all it's functions a few times and finish with the blade on the ground.
    Re check the fluid level and add if necessary (3/4" from the top again).
    Disconnect the cylinder again and replace the cover.
    Re attach the cylinder and your done..
  3. thanks

    that process is better than what I was doing.

    the simple 3/4in from the TOP, is part of the question.
    Is that 3/4in from the (bottom) of the threaded hole, (my guess) ??

    What other means are you suggesting?
    do you disconnect hoses ??

  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    You want the fluid level 3/4" from the bottom of the hole...just like you thought.

    As to doing more than just a drain and refill, check this thread..here I described how to go about doing more than just a reservoir drain and refill. This applied to a V-plow but the concept is the same..
  5. missing thread

    you link doesnt open

    Rather curious as how I can do a better job changing the hydo fluid.
    Last year was the most we have done since getting this plow.
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Hmm, looks like the link died on me... Here's what I wanted you to see in the other thread.. It applies to a V, but the concept is exactly the same for a straight blade:

  7. pump Screen ??

    I assume the screen is IN the pump??

    Is there any maintenance bulletins from Boss about such pump service??

    This seems important now that you mentioned it. Perhaps more than the
    thorough draining. A plugged screen could bring us to a stop.

    thanks for the details.
  8. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Correct. If you remove the reservoir you'll clearly see the pick up screens..
    Yes and no. Boss never intended on the end user doing anything more than basic maintenance (fluid top off's, connection cleaning's). Anything more than that, they intend on the dealer doing the work, so any maintenance or service bulletins go to the dealer not the owner. It's the same reason the Boss owners manuals are so vague on maintenance and repair items, the end user wasn't intended to do them, they left it up to the owner to return the plow to their dealer for service.
  9. thanks for that

    Good ideas and great tips.

    Wonder if we can get someone to come forward with the service
    bulletins (printed for the dealers) ??
    Seems are real op for such websites,..

  10. I almost followed your plan

    I didnt get to drain yet with the current forecast and didnt have enough on hand.
    So, I topped off.
    Glad I checked, down a quart.

    I did disconnect the lift cylinder at the top ( also greased the pin).
    The cylinder didnt retract much (1/2 inch). I pulled the vent and saw
    I was down and filled with about a quart. Surprised that it needed any.
    CAREFULLY checked the depth and stopped at a half inch below the threads.

    I spent an hour pulling and cleaning all of the electric connections and
    used dialectric grease and then sprayed the whole thing with FF (bonus points).

    Put the cover on greased the lower pin and reconnected the upper pin
    for the lift cylinder.

    The test left me with a puddle on the floor so I dont know how I got
    too much fluid in the reservoir---maybe air ??

    Think I should check it again??
    Really a pain with that cover (wish it was a 2 piece or something better).

    any suggestions??
  11. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    It's possible it had just a bit too much fluid in it. That's why it may have pushed a little out but I wouldn't worry too much about it....

    After you use it though, I would recheck it just to see where it's at.
  12. esugar

    esugar Junior Member
    Messages: 10

    Here's how you do it.....

    :waving:Hydraulic Power Unit Fill Procedure
    1. Remove the clevis pin mounting the top end of the Lift Cylinder to the Coupler Assembly. Swing the
    Lift Cylinder forward, then remove the plastic Hydraulic Enclosure Cover. Re-attach the Lift Cylinder
    to the Coupler Assembly.
    2. Manually attach the plow to the truck by pushing the Coupler Assembly towards the truck and
    engaging the Coupler Spring Pins.
    3. Remove the Filler Cap from the Hydraulic Power Unit and fill with Boss High Performance Hydraulic
    Fluid. When filling the Hydraulic Power Unit for the first time start by pouring two quarts in the
    reservoir. (10’V Power Units start with 2 ½ quarts)
    4. Raise and lower the plow 3 times.
    Note: If your plow will not lower, Flow Control Valve (31C) is completely closed. Refer to Step 8 to
    adjust Flow Control Valve (31C).
    5. Extend and retract the right wing 3 times. Extend and retract the left wing 3 times.
    6. Check the fluid level.
    7. With both wings retracted and the plow lowered, add fluid until fluid registers on the filler cap dipstick.
    Add fluid to within ¾” from the top of the reservoir.
    WARNING: When adjusting Flow Control Valve (31) make sure all appendages are clear
    of the plow blade and observers are standing a safe distance away from the plow blade.
    The plow may drop if your controller is in the FLOAT position. Make sure your controller
    is in the OFF position before attempting to adjust the plow. Failure to follow this warning
    could result in bodily harm.
    8. Adjust HYD07048 Flow Control Valve (31C) to obtain the speed desired for lowering the plow by
    loosening the jam nut, then adjusting the setscrew. Counter-clockwise adjustment will increase the
    speed the plow descends. Retighten the jam nut when the desired speed is obtained.
    9. Remove the clevis pin mounting the top end of the Lift Cylinder to the Coupler Assembly. Swing the
    Lift Cylinder forward, then replace the plastic Hydraulic Enclosure Cover. Re-attach the Lift Cylinder
    to the Coupler Assembly.

  13. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Wonder how Avitare is gonna retract the wings on his straight blade..:D
  14. esugar

    esugar Junior Member
    Messages: 10

    Opps, forgot that part!:dizzy:
    He could call boss and they'll send him all the information via email/pdf. They are great to work w/.
    Good luck:salute:
  15. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Just rattling your cage...:waving:
  16. many thanks

    I was so impressed by the thorough and detailed instructions
    I overlooked the wing description and just substituted the angle cylinders.

    I started with the plow mounted. I did not reconnect the lift cylinder and that
    may explain my over filling.

    And as suggested, now that I have a few hours of use, I will recheck the levels
    with that cylinder reconnected.
    Actually hope to replace fluid ( which I should probably do at the end of the
    season before storing??) if there is a break in the weather ( ie stops snowing
    and I am 'caught-up').
    Really hope to find the filter screens I was told about in early days of this thread.
    Cant find any mention of them in the owners manual ( which I hope is updated).

    side note: wonder when a DVD will replace the "owners manuals"??

    And,..that was an impressive reply from a "junior member" , considering
    that I am a grey haired member (not yet refered to as "senior")

  17. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    That could definitely account fot it being a bit too full....

    Good idea to do, never hurts to change it..
    You wont see any mention of the internal filters in the owners manual either. Like I said in post #8, Boss never intended for the end user to service the plow themselves..so the pick up filters aren't mentioned in the manual.. they leave it up to the dealer. There not hard to get to to clean though, just drain the reservoir and remove it. You'll see the filters on the end of the pickup and exhaust tubes..

    Maybe.... but he cheated a bit :D, it's copied and pasted right out of the install manual.. :)
  18. my 99 manual isnt that specific

    and obviously I dont have a V-plow.

    I still think there is a whole industry open to video -manuals.

    Even links would be better then manufactures ancient manuals.

    Another op for Plowsite ?? A how to --link ??