At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic Parts
Today we will discuss:

Sundstrand Sauer Danfoss Series 90 Servo Arm Change
In the series 90 100cc Pump the servo arm and swashplate will no longer be available. And they will no longer be interchangeable and will no longer be service parts either. You will have to switch over to the new style for the new models.
The servo arm (newer one) is a press fit into a groove in the newer swashplate. You have to have special tooling for this application. There are pre assembled kits for the 55cc, 75cc, 100cc pumps.
The 55cc kits will have all the items except for S10
The 75cc will have all the items below.
The 100cc will have all the items below, except for S10 and F20.

If you need further info on this topic, please let us know. We will be glad to answer any questions.
800-361-0068
sales@hydrostatic-transmission.com