• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

821 Case Payloader transmission

Jake Erickson

Well-Known Member
Joined
Dec 9, 2019
Messages
66
Location
Rutland ND
Occupation
Farmer
I’ve got an 821 (plain) loader. Had 1st gear solenoid go out twice on it in the past. Today while working 1,2,3 gears quit working. Drove it to the shop and when I got there they all worked again. It was intermittent so I parked it, I’m almost certain it’s electrical causing the solenoids to fail and now 1,2,3. Anyone have any experience with these old machines? It’s the Zf transmission. Not sure where to even look or what to do.
 

Bigbert

Senior Member
Joined
Jan 2, 2016
Messages
342
Location
Germany
Occupation
Consulting Engineer
Hi Jake

I'm not so familiar with the English language. However it sounds to me you are losing power intermittendly in 1,2,3. 4th is okay?
So it looks like solenoid M3 (Y3) for KV clutch not getting powered.
Please check voltage at Canon plug on top of control valve. Port D is for M3 (Y3)
 

Attachments

  • WG200Controlunit.jpg
    WG200Controlunit.jpg
    55.1 KB · Views: 8
  • CanonPlugM5valve.jpg
    CanonPlugM5valve.jpg
    61.1 KB · Views: 8

Jvandervlucht

New Member
Joined
May 11, 2024
Messages
1
Location
Cadillac Michigan
I have just purchased a 821b that won’t move in any gear they replaced forward reverser with no luck is there any safety devices that would cause the loader to not move in any gear forward or reverse?
 

Bigbert

Senior Member
Joined
Jan 2, 2016
Messages
342
Location
Germany
Occupation
Consulting Engineer
Hi Jvandervlucht,

is it a ZF 4 WG180 transmission? Please get us a picture of gear switch. Just to learn which type of transmission control is fitted. The forward reverser is the gear switch?
 

Coy Lancaster

Senior Member
Joined
Dec 19, 2014
Messages
2,038
Location
Arkansas
Occupation
service tech
Should have the ZF shifter with a shift module behind the operators seat. There are a number of different things that could keep the loader from moving. For example, the brake pressure could be low and the shift module won't let trans engage, the shifter could be faulty or trans could be out of fluid, be sure and put 15/40 diesel engine oil to refill trans check with engine running.
 
Top