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Offline davidpaul

Transmission
« on: April 24, 2016, 03:27:18 PM »
Transmission noise, as I didn't buy mine new I don't really know if I have a problem or not but my rear axle seems to make heck of a racket when under load, I'm not expecting silent running but at the minute it seems too load for my liking. I don't want to be into stripping the rear "diff" if it's normal  ;)
2015 Zforce 800, Dr Pulley weights and sliders, Dobeck EJK, Innovate Motorsports AFR gauge,
Custom exhaust outlet, Ramair foam air filter, Led light bars, Modified air intake, CRD a-arm guards

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Offline locknload

Re: Transmission
« Reply #1 on: April 24, 2016, 03:32:39 PM »
I bought my 2015 brand new and yes I believe it's the rear differential that's noisey under load like they used straight cut gears. Probably my only dissapointment in the machine.
2015 zforce 800 EPS
Super atv flip up windshield
Rodins doors
24" light bar
Special built seat for my dog

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Offline NMKawierider

Re: Transmission
« Reply #2 on: April 24, 2016, 03:35:55 PM »
These things are noisy by nature but check everything like gear case/diff oils and change them to a synthetic 80/90 or 75/90. Check for play or movement in bearings and CV joints, end play or side play movement in the pinions...stuff like that.
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | 9.7" GPS | Bandit Springs Rear & Gen-3 Shocks Front

My Videos On YouTube

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Offline Zing

Re: Transmission
« Reply #3 on: April 24, 2016, 06:07:27 PM »
Have the rear differential loosened up, it was assembled too tight!

My first ZForce ran quiet under load but my second Zforce was horrific!  It sounded like a wood planner.  I knew it was not normal and my dealer agreed knowing of my experience I had with my first CFMoto. They opened the differential and changed the shims, loosening it up and now it is super quiet other than the standard whining of the clutch.


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Offline NMKawierider

Re: Transmission
« Reply #4 on: April 24, 2016, 08:11:25 PM »
Have the rear differential loosened up, it was assembled too tight!

My first ZForce ran quiet under load but my second Zforce was horrific!  It sounded like a wood planner.  I knew it was not normal and my dealer agreed knowing of my experience I had with my first CFMoto. They opened the differential and changed the shims, loosening it up and now it is super quiet other than the standard whining of the clutch.
Good to hear.
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | 9.7" GPS | Bandit Springs Rear & Gen-3 Shocks Front

My Videos On YouTube

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Offline Bobbed06

Re: Transmission
« Reply #5 on: April 24, 2016, 09:59:58 PM »
Have the rear differential loosened up, it was assembled too tight!

My first ZForce ran quiet under load but my second Zforce was horrific!  It sounded like a wood planner.  I knew it was not normal and my dealer agreed knowing of my experience I had with my first CFMoto. They opened the differential and changed the shims, loosening it up and now it is super quiet other than the standard whining of the clutch.

This is great info...Drop a part number for the shims and the backlash specs for the ring,pinion out of the service manual for a one stop info for the fix!

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Offline davidpaul

Re: Transmission
« Reply #6 on: April 25, 2016, 07:16:47 AM »
Wouldn't loosening the adjuster on the diff casing achieve the same thing ?
2015 Zforce 800, Dr Pulley weights and sliders, Dobeck EJK, Innovate Motorsports AFR gauge,
Custom exhaust outlet, Ramair foam air filter, Led light bars, Modified air intake, CRD a-arm guards

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Offline Zing

Re: Transmission
« Reply #7 on: April 25, 2016, 08:09:42 AM »
Wouldn't loosening the adjuster on the diff casing achieve the same thing ?

Good question. They told me they opened the diff.  I will ask them if they used the adjuster. What ever they did totally resolved the issue. 

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Offline Revolutionary

Re: Transmission
« Reply #8 on: April 25, 2016, 08:43:14 AM »
Real funny you guy's post this, yesterday I rode my Daughter's machine, and it was QUIET next to mine, her transmission etc makes almost no noise, mine whines, like someone else said, like a wood planer. I know it ain't good...can't be; right?
(2) 2016 CF Moto Zforce 800 EPS EX's
SuperATV:
Split Windshields
Big Rear View Mirrors
Big Side View Mirrors
Rear Cargo Boxes
ICE Anti Freeze
Twin Air Filters
Russian Doors!
SuperATV Bags on doors
Sedona Mud Rebel Tires
NMK's Famous Intake SYstem

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Offline Bobbed06

Re: Transmission
« Reply #9 on: April 25, 2016, 09:06:44 AM »
Wouldn't loosening the adjuster on the diff casing achieve the same thing ?

There is an adjustment on the diff? Can someone screen shoth the service manual or parts explosion to highlight this?

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Offline Bobbed06

Re: Transmission
« Reply #10 on: April 25, 2016, 09:22:22 AM »
http://www.alpha-sports.com/cfmoto_parts.htm

Part #10 and 19 are the only methods of adjustment on diff I see here. They have optional shim thicknesses. A tight diff will eventually wear in after mileage I would think.


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Offline NMKawierider

Re: Transmission
« Reply #11 on: April 25, 2016, 09:39:43 AM »
The only external adjustment on the rear gear case to my knowledge is the parking brake cable.
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | 9.7" GPS | Bandit Springs Rear & Gen-3 Shocks Front

My Videos On YouTube

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Offline davidpaul

Re: Transmission
« Reply #12 on: April 25, 2016, 10:03:28 AM »
In my opinion it shouldn't be that loud. I would prefer if it was quieter. The adjuster can be seen in the picture
2015 Zforce 800, Dr Pulley weights and sliders, Dobeck EJK, Innovate Motorsports AFR gauge,
Custom exhaust outlet, Ramair foam air filter, Led light bars, Modified air intake, CRD a-arm guards

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Offline NMKawierider

Re: Transmission
« Reply #13 on: April 25, 2016, 10:13:10 AM »
Wow...amazing! Had no idea! But what does it actually adjust? The manual is a little tough to comprehend for me. From what I read, it's not something you want to do without some good understanding.
« Last Edit: April 25, 2016, 10:41:41 AM by NMKawierider »
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | 9.7" GPS | Bandit Springs Rear & Gen-3 Shocks Front

My Videos On YouTube

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Offline davidpaul

Re: Transmission
« Reply #14 on: April 25, 2016, 10:42:06 AM »
That's one question, it's opposite where the crown wheel and pinion meet, it maybe just some sort of support or guide
2015 Zforce 800, Dr Pulley weights and sliders, Dobeck EJK, Innovate Motorsports AFR gauge,
Custom exhaust outlet, Ramair foam air filter, Led light bars, Modified air intake, CRD a-arm guards