News and Helpful Videos
Hydrostatic Transmission Service Warranty Procedures On All Of Ours Pumps & Motors We Sell, Repair or Rebuild
Posted by Tammy Soper on
HYDROSTATIC-HYDRAULIC WARRANTY HYDRAULIC-HYDROSTATIC WARRANTY INSTRUCTIONS Hydrostatic Transmission Service, LLC warrants our hydraulic-hydrostatic repaired pump or motor to be free of any defects in workmanship for a period of one (1) year from the date of installation if the following conditions are met by the customer: A. The hydraulic-hydrostatic reservoir must be cleaned out with diesel fuel or solvent and clean rags, then blown out with air. B. All hydraulic-hydrostatic lines must be filled with diesel fuel or solvent and blown out backwards with air. C. All hydraulic-hydrostatic fittings must have replacement o-rings installed. D. The hydraulic-hydrostatic reservoir must be removed...
Sundstrand Sauer Danfoss Hydraulic Pumps Series 90 – Side Washer Change
Posted by Tammy Soper on
At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: Sundstrand Sauer Danfoss Series 90 – Side Washer Change This service bulletin SB 1994-018 for the 130cc pumps, the washers that are under the side cover screws have been taken off all the series 90 42 – 130cc variable pumps. Always if you take off the side cover screws for any reason, they have to be replaced. The coating that seals and keeps the screws, wears off when are screws get taken off. The screw length changed...
Sundstrand Sauer Danfoss Hydraulic Pump Series 90 Leveler Posts, Nuts, Guides & Screws
Posted by Tammy Soper on
At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: Sundstrand Sauer Danfoss Series 90 Leveler Posts, Nuts, Guides & Screws If you have a unit that has a leveler guide posts, put in the two guide posts and sealing nuts. Torque to 6.7 lbsf/ft for 030 and 042 pumps, 17lbsf/ft for 055 -100 pumps, or 32 lbsf/ft for 130 pumps. The 130 size that have leveler guides, put in the guides onto the side cover. Place in the four locking screws holding the guides to the...
Rexroth A10V Variable Displacement Pump Series 31 Model 61NOO Unit Dimensions Size 71
Posted by Tammy Soper on
Rexroth A10V Variable Displacement Pump Series 31 Model 61NOO Unit Dimensions Size 71without through drives. These diagrams show the ports,unit sizes,shaft and gives a parts list.If you need further info on these pumps, we can help you with that.We also do any kind of repairs or we can rebuild your unit. We also do exchanges.We work on any model of Rexroths.So give us a call at 800-361-0068sales@hydrostatic-transmission.com
Sundstrand Sauer Danfoss Series 20 – How to Tell When the Displacement Control Valve Has Worn Out
Posted by Tammy Soper on
Good and Bad Displacement Control Valves In #1 diagram this is a picture of displacement control valve that is straight from the factory. These are factory adjusted,locked and sealed. They have a note on top of the valve…DO NOT DISTURB THIS ADJUSTMENT. There are some parts that can be removed with disturbing the spool adjustment: Linkages Neutral Return Spring On #2 diagram shows a broken spring. There are some cases where the spring pin attaches to the control shaft to the two pivots an fracture and can show as a broken torsion spring and would have to be replaced. Diagram...