TM 9-4910-683-14&P
Problem:
f.
Graduated Dial (144) does not stay in adjustment.
Reason:
Sot. Set Screw (143) located in front of Dial Block (140) needs tightening.
Problem: Unable to set machine for small diameter drums.
g.
Reason:
Boring Bar (146) positioned improperly.
Failure to use R-540 spacers to position drum away from Housing (2).
h.
Problem: Power loss.
Reason:
Low voltage.
Spindle RPM too fast for depth of cut.
Worn
belts
(223),
(227).
Tool Bit set too deep.
Dull Tool Bit,
Insufficient lubrication in Housing Assembly (1) gear case.
Spindle Bearings (3 & 4) dry.
Defective motor.
P r o b l e m : Machine shuts off during operation.
i.
Reason:
Automatic Thermal Overload Protector cuts off because machine is overworked.
Shut off Switch (201) and let Motor (208) cool for 6 minutes before restarting.
Fuze blown.
Problem: Machine will not start.
Reason:
Fuze blown.
Defective Switch (201).
Problem: Feed Control inoperative.
k.
Reason:
Feed Gear Spring Pin (91) sheared.
Drive Chain (61) broken.
Lead Screw Nut (88) stripped.
l.
Problem: Cannot engage Lever (71).
Reason:
Cut off Bracket (97) has disengaged feed. Rotate Handwheel (243) clockwise until
Cut off Bracket (97) has adequately cleared Lever (71).
ADJUSTMENTS
a.
Apron Gib (94) adjustment. Loosen Jam Nuts (96). Tighten set screws (95)
until Apron looseness is taken up. Tighten Jam Nuts (96).
b.
Cross Slide Gib (103) adjustment. Loosen Jam Nut (105). Tighten Gib Screws
(104) until Cross Slide (102) looseness is taken up. Tighten Jam Nuts (105).
c.
V Belt (223). Loosen the four Hex. Hd. Cap Screws (210), slide motor until
proper belt tension is attained and tighten the four Hex. Hd. Cap Screws.
DISASSEMBLY
1-80.
Remove Arbor by rotating Draw Bar Nut (126)
counterclockwise
with
Open
End
Wrench R-154 until Arbor breaks free of Spindle.
