Parts Drawings and Information
For parts and dimensional drawings please use the Product Selector to get information about your specific model.
Routine Maintenance Items
Spline Drive Lubrication: The spindle drive spline
should be wiped generously with a high film strength grease.
To reach the spline, unscrew the bearing retainer. This is a
left-hand thread. Pull out the spindle for access to the spline.
Wipe a light film of the same grease on the switch cam rods where they go through the torque plate.
Hydraulic Drive Motor: This motor is lubricated by the hydraulic oil and needs no other lubrication. Should the shaft seal ever need replacing, seal kits are available, complete with instructions.
Removing Drill Bits: With Morse taper spindles, drill bits should be removed from the spindle by inserting a lever-type drill knock-out in the slot provided. Caution! Do not hammer on the knock-out or spindle; this may damage the spindle bearing.
Quill: Keep dirt wiped off the quill, and lubricate it once every 12,000 cycles or once a month, whichever is sooner, with a few drops of oil.
Limit Switches: Routinely inspect limit switches for loose contacts, damaged trigger levers, broken or worn mechanisms, and general structural rigidity.
Seals: Visually inspect unit for hydraulic leakage which could indicate the need for seal replacement. (Seal leakage is a very rare occurrence.)
Removing Spindle Bearing
First remove spindle as described under spline drive lubrication. The spindle and drive shaft are locked together by a tapered pin. Punch the taper pin out by striking it from the side labeled X-X. To remove the bearing, the two parts of the spindle must be unscrewed from each other. These are standard right hand threads.
Interchanging Hydraulic Motors
In setting up for a different job, the hydraulic motor can be interchanged with a different model which may have a more favorable ratio of torque and RPM for the new job. See our motor quick change option on page 12 for alternative options.
Remove four socket head nuts. Pull out the motor with spline sleeve still attached. The spline sleeve set screws are swedged in place and removal might be difficult. It is recommended when using interchangeable motors, that you keep the spline sleeve attached and not swap sleeves between motors. If removal of sleeve is necessary, the swedge must be removed by deburring or use a small end mill to remove swedge. Loosen set screw, and pull spline sleeve off motor shaft. Transfer motor ring, if used, to new motor shaft. Replace spindle sleeve and re-swedge tightened set screw. Unscrew four studs from the old motor and mount them on the new motor. Place the spline sleeve on new motor shaft and tighten set screw. Plug the new motor assembly into the Jiffy-Drill body, engaging the spline sleeve with the spline on the spindle. Reinstall and tighten the four socket head cap nuts.
Recommended Spare Parts
At least one spare limit switch (part number J-318) should be kept on hand. In an emergency, the deceleration limit switch, if not used, can be substituted as a replacement for one of the other switches.
When replacing a limit switch, transfer one wire at a time from the old to the new switch, to avoid the possibility of getting the new switch wired incorrectly.
Locating Unit Serial Number
The unit serial number is located on the right side of the unit when looking at the spindle end. Be aware that the covers between units are interchangeable. Therefore, the part number on the cover may not be the correct part number of the unit. Consult the factory for determining the exact part number of your unit or locating the serial number. Serial number may be required when ordering replacement parts.
Seal kits are available from your local distributor or the factory. Be prepared to supply unit serial number to determine proper seal kit number.
- RKJD-1: Complete soft seal kit for serial numbers up to 577Ql. (Units purchased prior March, 1986.)
- RKJD-2: Complete soft seal kit for serial numbers starting with 578Q3.
Drill Cylinder Seal Kit Installation
- Remove bearing retainer nut (left hand thread). Pull drive shaft out.
- If there is an adapter ring, remove by first removing the two loc-tited set screws in face. Use a torch to break the loc-tite bond. Remove the adapter ring (left hand thread).
- To remove stop rod mounting plate, loosen socket head cap screw at bottom. Use a flat head screw driver to slightly spread stop rod mounting plate and slide mounting plate off of the quill. You will need to remove the switch cams to completely remove stop rod mounting assembly.
- To remove torque plate, remove 4 mounting screws. Pull torque plate up to the threads on quill. It is easier to remove plate by unscrewing seal around thread (left hand thread).
- To remove cylinder rod end, rotate rod end 45 degrees, slide off rod end using the corners to grab hold of. Remove bronze bearing and seal from the rod end. Remove quill from the barrel. Remove seals, being careful not to damage quill surface. Clean and dry surface of all parts before re-assembly. Lubricate using high film strength grease.
- Replace seals using a small screw driver, being careful not to damage seal or quill surface. Using a thin film of grease on the seals will improve installation and sealing.
- Re-assemble in reverse order.