More New M5660SUHD questions

WillyBill

Member

Equipment
M5660SUHD, LA1154SU w/3rd Function
Mar 25, 2021
53
19
8
Northwest Tennessee
Just turned over 10 hours. Drove it on the road to another farm 2.7 miles away. Mowed with a 7 ft rotary cutter. Coming back on the road it made a high pitched sound that sounded like it was coming from the rear end. When I got home I put my hand on the rear axle housing and it was hot enough that I couldn’t keep my hand on it. Is the sound and the heat normal?
 
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mcfarmall

Well-known member

Equipment
Kubota M5660SUHD, Farmall C
Sep 11, 2013
1,389
1,661
113
Kalamazoo, MI
I'm gonna say no. My rear axle housing never gets too hot to touch even after mowing all day in 90⁰ temperatures. The squeal noise seems suspicious. Maybe oil passing over the relief valve. That would definitely cause excessive heat. Did it happen with the 3ph all the way raised?
 
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WillyBill

Member

Equipment
M5660SUHD, LA1154SU w/3rd Function
Mar 25, 2021
53
19
8
Northwest Tennessee
I'm gonna say no. My rear axle housing never gets too hot to touch even after mowing all day in 90⁰ temperatures. The squeal noise seems suspicious. Maybe oil passing over the relief valve. That would definitely cause excessive heat. Did it happen with the 3ph all the way raised?
Yes sir, 3PH all the way up. Thanks for your response.
 

Auger01

New member

Equipment
M5660SUHD
May 19, 2023
1
1
3
Texas
Was it in 4wd? When I forget to put mine in 2wd on the road it will make a high pitched whine
 
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WillyBill

Member

Equipment
M5660SUHD, LA1154SU w/3rd Function
Mar 25, 2021
53
19
8
Northwest Tennessee
Update: Talked to some techs at the dealership. They said if the lift arms were all the way up and the “back feed lever” wasn’t adjusted correctly that the pump would continue to run against a dead head and the fluid would pass through a relief valve. I went home and raised and lowered the lift arms and I can hear a difference when the arms reach all the way up so I don’t think this is the problem. Also remote lever is in neutral position. Steering and loader work fine. They said 2.7 miles in FWD wouldn’t cause the hot fluid. I checked the trans fluid when I brought it home on level surface with bucket up, loader down and lift arms down and fluid was on top mark on dipstick. Checked again today and fluid level is still good.

I wonder if something is wrong with the oil cooler?

IMG_1863.jpeg
 
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North Idaho Wolfman

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Lifetime Member

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
29,211
5,498
113
Sandpoint, ID
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WillyBill

Member

Equipment
M5660SUHD, LA1154SU w/3rd Function
Mar 25, 2021
53
19
8
Northwest Tennessee
Update: @Auger01 The high pitched whine was definitely caused by the 4WD being engaged while running down the road in road gear.
@North Idaho Wolfman I made the trip again and took the temp of the rear end with a Fluke IR thermometer and it was 130F and it felt hot so you were right about not being able to judge temperature by touch.

Thanks fellows. I appreciate everyone’s input.
 
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