The following parts are all of the repair parts usually necessary to rebuild the Back Gear (Range) shifting cylinder on model 41B machine that are equipped with the 3-position type of sliding Back Gear.
VALVE MODIFICATIONS NEEDED
Part number 905766 (Parker Valve)
Lucas part number 905766 will require two minor modifications to serve in replacement duty on machine serial numbers 42B2001 thru 42B2224 due to an internal design change by Parker Hannifin.
Manatrol Valve Replacements
Lucas owners with model 41B and 42B machines need to take several additional steps to replace obsolete Manatrol-brand, electrical solenoid-operated hydraulic valves when valve replacement is required.