© Danfoss, 2016 AN00000362en-US | 11194839• Rev 0101 • July 2017 1
Service Kit Instructions
Series 90 Pumps
Side cover seal nut replacement procedure
Required Tools
• ½ inch socket wrench
• Calibrated torque wrench (½inch drive)
• 13 mm socket (½in drive) and 14 mm internal
hex socket (½inch drive)
Caution
Installation of
Wishbone Tool
Do not use air tool to complete required work
1. Watch the S90 Pump Seal Nut Replacement
video:
www2.powersolutions.danfoss.com/s90repair
2. Drain oil from the pump
3. Clean front cover area and remove the drain port
plug using a 14 mm internal hex socket
4. Insert the wishbone tool into the side cover
drain port
5. Screw the wishbone locating plug into the side
cover drain port
6. Seat the wishbone tool with the wing nut
1. Remove and discard the seal nuts
2. Clean any remaining seal material
3. Replace the seal nuts and torque to 17 ft•lbs
Remove and Replace
Side Cover Seal Nuts
Remove Wishbone
Tool
1. Reverse wishbone tool installation
instructions above
2. Install case drain plug and torque to 30-100
ft•lbs
Wishbone
tool
Wishbone
locating plug
Front cover
Case drain plug
Seal nut
s
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1
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