Service Information
8
CHECKING HYDRAULIC FLUID LEVEL
Required Tools:
5/32” Allen Wrench
3/8” Open End Wrench
3/4” Open End Wrench
Needle Nose Pliers
Procedure:
1. Using a 5/32” Allen wrench and a 3/8” open end wrench, remove the four button head cap screws and
four nylock nuts under the seat holding the seat assembly to the base.
2. Using needle nose pliers, remove the cotter pin under the base weldment plate.
3. Remove the base hood (see
.
4. Be sure there are no hydraulic leaks. If there are, the hydraulic jack must be replaced.
5. Lower the jack to the full down position.
6. Using a 3/4” open end wrench, slowly turn the fill plug located on the side of the reservoir counterclock-
wise to allow excess system pressure to vent. Remove the fill plug.
7. The hydraulic fluid should be visible at the bottom of the fill hole. If it is not, add Mobil Aero HFA hydraulic
fluid (Stryker part number 2020
−
70
−
475) until the fluid is visible at the bottom of the fill hole. Replace
the fill plug.
CAUTION
Use of other types of oil may damage hydraulic units.
8. Replace the base hood.
