7
Operation
Once the Hydraulic digger is fitted to the tractor the linkage must be placed in the float position with
the draft control disengaged so the digger height is then controlled by the hydraulic cylinder.
If necessary adjust the sway chains on the tractor linkage to centralize the sub-frame and prevent
any sideways movement.
Install the hydraulic cylinder between the lugs on the linkage frame and boom using the pins
supplied. Connect the hoses to the tractor, see below for the further details.
Connecting the Hoses - Hydraulic Model
Before attaching or removing the hydraulic hoses ensure that the quick release connections are
clean to avoid contaminating the system.
Plug the digger hoses into the tractor remote outlets. For safety reasons it is desirable to always fit
the hoses in the same pattern to ensure that the direction of the control to apply downward pressure
will always be the same. This can be achieved by marking the hoses with tags. Ensure the hoses
are well supported and clear of the tractor wheels.
Attaching the Gearbox and Auger - All Models
Lower the digger boom fully. Position the gearbox an auger assembly behind the boom and align the
pivot pin holes. Install the pivot pin and secure with the split pin provided. Make sure that the input
shaft of the gearbox is facing towards the tractor, so that the PTO shaft can be fitted.
Raise the boom to full height to allow the auger to hang vertically then lower it so the end of the
auger rests on the ground.
Connecting the PTO Shaft - All Models
Clean and grease the splines on the tractor and digger PTO stub shafts and install the PTO shaft
making sure that the spring loaded locking pins engage in the grooves of both stub shafts.
Ensure that the PTO stub shaft guard is fitted to the tractor.
Check that the PTO shaft is of the correct length, as follows. On Standard digger models set the
linkage so the ends of the two stub shafts are closest. Install the PTO shaft then depress the locking
pin at the gearbox end and pull the shaft back to check there is at least 25mm of telescopic travel
remaining. Refit the PTO shaft and raise and lower the digger to check that the telescopic tubes
overlap by approximately1/3rd their length, and not less than 150mm, in all positions. On the
Hydraulic model check these dimensions in the fixed operating position. Refer diagram below.
If the PTO shaft has to be shortened cut equal amounts from both male and female shafts and safety
covers. Carefully remove all burrs then clean and relubricate before reassembling.
Relieve all hydraulic pressure before connecting or disconnecting hoses. Oil
escaping under pressure can penetrate skin, causing serious injury. Seek
immediate medical treatment if injured by escaping oil.
