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D. Turn motor 180º. Reinstall bolts retaining motor
to spindle housing.
E. Reinstall hydraulic fittings, and hoses. Replace
fitting O-rings as necessary.
4-10 TROUBLESHOOTING
Cleanliness is of primary importance for obtaining
satisfactory life of hydraulic components. The life of
hydraulic components is dependent upon the
degree of contamination in the hydraulic oil.
During usage, proper oil filling and servicing of fil-
ters, breather, tank, etc., cannot be over empha-
sized.
The hydraulic system must be cleaned after a major
Table 4-3 List of Recommended Hydraulic Oils
Manufacturer Hydraulic Oil Manufacturer Hydraulic Oil
Chevron AW46 Mobil DTE-25
Gulf Harmony 46AW Union 76 Hyd. Oil AW215
Texaco Rando HD46 Exxon Magnas A15
Citgo AW46 Exxon Nutoh 46
Shell Tellus 46 HY Oil 46 Standard EP Hyd. Oil #1
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contamination such as pump failure. This requires
removal and individual flushing and cleaning of all
components and lines that were exposed to the
contaminated oil flow. Flushing of the system
components should be done with a suitable sol-
vent or diesel fuel. Clean the suction strainer,
replace the return line filter, and refill tank with new
hydraulic oil.
Troubleshooting procedures are listed in Table 4-4.
If the problem cannot be solved or replacement
parts are necessary, contact your authorized Bush
Hog dealer. Please have ready your machine
name, serial number, model number, purchase
date, and exact cause or description of problem.
Figure 4-4 Hydraulic Motor
Spindle Housing
Motor
Hydraulic Fittings
Return Line Hose
Pressure LIne