TM 9-3417-213-14 & P
I. INSTRUCTIONS FOR CHANGING SPINDLES IN THE FOLLOWING MODELS 745. 747. 756, 757, 845, 847,
856, 857,760, 860, and 887.
Drop knee and move saddle to rear so as to provide clearance for quill removal.
Remove (100-027-771) adjustable vernier blade holder.
Remove two 5/16-18 x 7/8 socket head cap screws in (100-002-917) quill feed trip key and remove key.
Put right hand on (101 -212-312) spindle feed handle arm and left hand on the bottom of the quill, and by
moving the (101-212-312) handle in a counter clockwise direction, run the quill down until the rack on the
quill clears the pinion on the cross shaft.
When this happens, the (101-212-312) hand lever will unwind very rapidly. If released, it could cause
injury. So it must be unwound slowly.
Let the quill slide down out of the head casting and put it in a vise, being sure to use brass or lead jaws in
Release the locking ear of the W-07 lock washer in the N -07 locknut or snap ring in the top of the quill and
Remove (100-002-972) front bearing retainer from quill after first releasing the 10/32 socket set screw in the
lower rear of the quill. (NOTE: in the case of #30 MMT, the number is 100002-977.)
Remove quill from the vise and strike spline or upper end of spindle against a solid piece of wood laying
against a solid surface, such as the floor. The spindle and the two lower spindle bearings and spacers will
then come out of the quill.
Replace new spindle and assembly in reverse order making very sure that the N-07 locknut is tight enough
so as to put tension on the 2968 spacer on serial number before approximately 17105 on R8 spindles and
approximately 17360 on #9 B & S and #30 MMT spindles. After this serial number make sure the locknut is
tight against the bearing.
When putting the quill back into the head casting, first start the quill into the bore of the casting by gentle
pressure and care (do not force).
Line up the spline of the spindle with the spline of the (100-004-576) drive hub by turning the spindle after it
goes up against the bottom of the (100-004-576) hub.
Next, wind the 101-212-312 counter clockwise to the end of its spring tension and push quill up until the
rack of the quill engages the pinion of the cross shaft and use (101-212-312) hand lever to raise quill up to
the top of its travel.
J. PROCEDURE FOR FREEING UP BACK GEAR TO DIRECT DRIVE 745, 756, 760, 845, 856, 747, 757, 860, 847,
This particular problem is usually caused by the (111-218-001) pulley guard being jolted out of line during
shipment and can usually be remedied as follows:
1. Shift the back gear lever into the direct drive or upper range and set the speed at about 1500 RPM.
2. Loosen the eight 1/4-20 x 7/8 socket head cap screws which hold the (111-218-001) belt guard to the (111-
3. Turn on the spindle motor, move the (111-218-001) belt guard a very slight distance in several directions.
The dowel pin hole in the front of the pulley guard can be used with 1/4" allen wrench to move the pulley
guard back and forth.
4. The pulley guard will actually tend to center itself if reasona ble care is exercised when retightening the eight
socket heads that hold the belt guard to the back gear housing.