INSTRUCTIONS (continued)
On the implement end of the PTO shaft there is a hole in the yoke just forward of the 5/16” shear bolt (see Figure A). This hole is for the 3/16” diameter x 11/4” long roll pin (#2504011). When this roll pin is driven in this hole, the center of the roll pin engages into the groove on the front of the gearbox input shaft. This prevents the PTO assembly from coming off if the 5/16” shear bolt should shear. When replacing the shear bolt, use only a soft, Grade 2 shear bolt. DO NOT use a hard bolt!
WARNING!
Do not install a longer bolt or other longer fastener! A protruding fastener is more likely to grab loose clothing and can cause serious injury or death.
Attach the gearbox (Ref. #7) to the boom using the gearbox pin (Ref. #17) and secure it with the two cotter pins (Ref. #18). The gearbox should be placed so that the large shaft is pointing toward the ground and the small shaft is pointing toward the tractor.
NOTE: The gearbox is shipped WITHOUT lubricant, so it will be necessary to fill it before use. With the gearbox in a level position, fill to the side inspection hole with a good 90 wt. gear lubricant. Check often and add lubricant if necessary.
Clean tractor PTO stub shaft and the inside of the splined driveline yoke. Pull the spring loaded ring from the end of the yoke and slip the splined driveline yoke on the splined PTO shaft of your tractor. Release the spring loaded ring and push the yoke on until it locks in place. (The spring loaded ring holds locking balls that lock the tractor end of the PTO driveline on the tractor PTO shaft.) Make certain the tractor PTO shield is in good condition and securely fastened onto the tractor.
Slowly raise and lower the digger without the auger on. Watch to see that the PTO driveline and/or shields do not separate or get into a bind. Check to see if gearbox end will lower to the ground. If it will not go all the way down, then either change the hole location between the yoke and boom or check to see if the PTO shaft is bottoming.
NOTE: If your tractor PTO shaft has a 11/8” spline, it will be necessary to obtain a 11/8” to 13/8” sleeve spline adapter. If tractor is equipped with a 11/8” to 13/8” spline adapter extension, it may be necessary to cut the PTO shaft off in length. Check this before putting the auger on or digging a hole. To check, raise and lower the post hole digger with the tractor BEFORE putting the auger on.
NOTE: The use of a PTO extension could require that the PTO driveline be shortened a considerable amount. If this is done, the driveline halves may separate when the post hole digger is raised to transport position.
If the PTO driveline needs to be shorter, remove the driveline from the tractor and digger gearbox. Lower the digger (without the auger on) until the input shaft of the gearbox is in line with the PTO stub shaft of the tractor. (This should be the shortest distance required for the driveline.)
Pull the two telescoping halves of the PTO driveline apart. Connect the tractor end to the tractor and the gear- box end to the digger gearbox (but NOT with the two halves together).
Hold the two driveline sections parallel to each other and mark each end as to how much too long they are.
Then raise the digger to transport position and again hold the two driveline halves parallel to each other and check for a minimum of 6” (15 cm) overlap. If driveline has less than 6” overlap, do not use. Contact your deal- er. If at least 6” of overlap is provided, then proceed in cutting the driveline.
Figure 1
1.If driveline must be cut to a shorter length, clamp driveline in a well padded vise to prevent damage to the shield. Cut off shield where marked. Using
Figure 2
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