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  1. #1
    Silver Member blake037374's Avatar
    Join Date
    Jan 2013
    Posts
    109
    Location
    Baton Rouge, LA
    Tractor
    CT440

    Default Whistling noise

    Free working with tractor for hour or two. Only when I go in reverse sometimes I hear a whistling noise. And if I ease off to go slower it stops but will happen if I press harder again. Not sure if it's normal. Have any of you heard this.

  2. #2
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    16,969
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Whistling noise

    Quote Originally Posted by blake037374 View Post
    Free working with tractor for hour or two. Only when I go in reverse sometimes I hear a whistling noise. And if I ease off to go slower it stops but will happen if I press harder again. Not sure if it's normal. Have any of you heard this.
    Yes there is a kit to fix this problem..It only occurs in reverse and only after the fluid is hot. The kit is easy to retrofit it replaces a banjo bolt and adds a high pressure dead ended hose.

    http://www.tractorbynet.com/forums/k...eal+in+reverse


    Part numbers from the parts bags they came in, are as follows: New style eyebolt to replace existing~ part # T4125-39101.
    Attenuator hose: part # T4125-39001
    Cord band,(cable tie) part # T2185-82551
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  3. #3
    Silver Member Trails End's Avatar
    Join Date
    Jul 2012
    Posts
    168
    Location
    Candia, NH
    Tractor
    Bobcat CT335

    Default Re: Whistling noise

    This thread has been very helpful! My Bobcat CT335 also exhibits this squealing sound when warmed up and in reverse. After reading through
    the thread referenced by James K0UA, I checked the parts list for the external hydraulic lines for the CT335, and have attached it in PDF
    format to this message. It shows the new banjo bolt and dead-ended hose (items # 23 and 24 on the diagram) as a replacement for the original
    bolt (item #19 that attached the rigid pipe from the HST filter assembly to the HST).

    My CT335 (2012 model) does not have this dead-ended hose. I couldn't find any mention of this in the CT35 shop manual. The
    attached diagram does show the appropriate part numbers for the dead-ended hose and banjo joint bolt.

    You can find the parts list breakdown diagrams on the Bobcat website by clicking on the Parts & Service tab and clicking on Service & Maintenance
    and then click on 'Go To Parts Catalog'. Select your tractor model to obtain a list of sub-assemblies. Select the External Hydraulic Line Group.

    Make sure that you use Internet Explorer for this as it doesn't work with Firefox.
    Attached Files Attached Files
    Best Regards from Candia, NH

    Bobcat CT335, 8TL FEL with 68" bucket, EverythingAttachments 72" boxblade
    Bobcat 72" Snow blade, WR Long OBG2-48 Grapple, Pronovost Puma-74 snowblower

  4. #4
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    16,969
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Whistling noise

    I can attest that it works, I have the kit in mine. Mine only did it when the fluid was run for at least 2 hours hard in hot weather. And the sound was pretty mild, but it was there. After the kit was installed, it is gone.
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  5. #5
    Silver Member Trails End's Avatar
    Join Date
    Jul 2012
    Posts
    168
    Location
    Candia, NH
    Tractor
    Bobcat CT335

    Default Re: Whistling noise

    Quote Originally Posted by k0ua View Post
    I can attest that it works, I have the kit in mine. Mine only did it when the fluid was run for at least 2 hours hard in hot weather. And the sound was pretty mild, but it was there. After the kit was installed, it is gone.
    Did you install the kit yourself, or did the dealer install it??
    Best Regards from Candia, NH

    Bobcat CT335, 8TL FEL with 68" bucket, EverythingAttachments 72" boxblade
    Bobcat 72" Snow blade, WR Long OBG2-48 Grapple, Pronovost Puma-74 snowblower

  6. #6
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    16,969
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Whistling noise

    Quote Originally Posted by Trails End View Post
    Did you install the kit yourself, or did the dealer install it??
    We installed it together in my driveway. Anyone could install it. It is just a few minutes with a wrench.
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


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