Best way to clean Integrated Pump and Wheel Motor unit

Discussion in 'Mechanic and Repair' started by Exmark fan, Jan 12, 2020.

  1. Exmark fan

    Exmark fan LawnSite Senior Member
    Messages: 422

    EE888A9D-D128-426C-BC56-3E036C14B69B.jpeg What are some good ways to clean this integrated pump and wheel motor unit. I pulled it from a 2012 Exmark Lazer Z 60. LZX980KC606 I have a leak coming from somewhere on the unit. Thanks, Exmark Fan
    Breezmeister likes this.
  2. Mason Petrov

    Mason Petrov LawnSite Member
    Messages: 42

    Are you talking the outside or the internals?
  3. OP
    Exmark fan

    Exmark fan LawnSite Senior Member
    Messages: 422

    This is the right side pump and motor unit. I am talking about the outside. I am attaching the parts breakdown for this mower.

    Attached Files:

  4. Mason Petrov

    Mason Petrov LawnSite Member
    Messages: 42

    I use a air compressor, and brake cleaner or another degreaser for areas I want really clean
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  5. That Guy Gary

    That Guy Gary LawnSite Gold Member
    Messages: 3,304

    Compressed air with a gun on the hose will remove 95% of it. Pressure washers are fine if you've got the smarts to avoid blasting any seals with it, dish soap and a scrub brush after blowing off works fine too.

    Harbor freight sells an engine cleaning gun that works really well, it's an air tool. It's an air gun with a pickup for cleaning solution.
  6. OP
    Exmark fan

    Exmark fan LawnSite Senior Member
    Messages: 422

    I would use compressed air but I don’t have an air compressor. I will check out the Harbor Freight tool.
  7. BigFish

    BigFish LawnSite Fanatic
    Messages: 5,464

    That ain't gonna work fer ya...uses compressed air, right ?
    Get a stiff parts cleaning brush from an auto parts store, and a couple cans of spray carb cleaner ( with a straw).
    Dry brush the heavy crud off first, then spray/brush.
    U can finish with a cut down paint brush ( softer) and gas or carb cleaner.
    Not much else ya can do w/o an air supply.
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  8. hal

    hal LawnSite Silver Member
    from Georgia
    Messages: 2,129

    Use your backpack blower to get the big stuff off and then do what bigfish said
  9. Dawson

    Dawson LawnSite Bronze Member
    Messages: 1,413

    I would spray it down with engine degreaser and then spray it off with the garden hose. That'll get 95% of the crud off and won't hurt a thing.
  10. Breezmeister

    Breezmeister LawnSite Silver Member
    Male, from South Jersey
    Messages: 2,512

    Those things are a bear to take out......:dizzy:

    More then likely, the seal under the fan has gone bad, they are the ones I replace the most, then the one on the side once. Both can be replaced with out removing the complete unit.


    My Exmark dealer gets me a after market seal kit with just the seals, not the gasket for the base. I have never had one of those gaskets leak.

    Pt # 109 4581 Number 4 on page 16. Arm controll for the pump, it's fragile. Becareful how you handle the pump. I have broken one so far.........:eek:

    Do not use break clean to clean the pump, it will damage the rubber on the seals.
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