Safety, Operation & Service
Page 9
EN-823122
February 17, 2004
Quackenbush
Operating and Safety Instructions
2. Packed chips or dull cutter may overload the
spindle. Feed rate may be too high. Drilling or
reaming may be beyond the torque capability of
this right angle drill. Pin shears.
3. Improper adjustment of lift arm assembly may
prevent automatic retract when the depth stop
6
contacts the drill head. If this occurs possible
damage to gears and shearing of pin will result.
4. Gear teeth have broken, spindle threads have
been damaged, or parts inside the drill head
have failed.
DOES NOT REQUIRE DISASSEMBLY:
1. Does not require disassembly of drill head, spindle
may be freed in this manner:
A. Turn off air supply.
B. Remove tool from drilling fixture.
C. Rotate spindle with wrench (CCW from
rear). . . opposite drilling direction 2 or 3
turns. This will require high torque.
D. When spindle is free, replace shear pin.
Leave the pin guard in place. Supply air
pressure and rapid advance the spindle out
of the drill head.
E. Correct malfunction and run
"Tool Function Check".
2. Turn off air supply.
A. Remove tool from drilling fixture.
B. Correct torque overload problem.
C. Replace shear pin.
D. Make sure the pin guard is in good condition
and in place.
E. Return tool to service.
3
and
4
require disassembly, cleaning, inspection, and
replacement of damaged parts inside the drill head.
All parts inside the drill head should be washed and
re-greased. When cause of malfunction is corrected,
run "Tool Function Check" (page 0).
SHEAR PIN INSTALLATION AND REMOVAL
CHANGING RAPID ADVANCE CLUTCH SPRING:
Unscrew and remove the clutch cover 382537. Drive
the shear pin out of the driven gear 382474 and clutch
shaft 382525. Remove clutch assembly from right angle
head. Clamp the clutch assembly in the vise to remove
the spring load before driving the roll pin 415019 out of
the lower clutch jaw 382535. Remove from the vise and
slip the clutch shaft 382525 out of the pinion and clutch
hub 382526.
CHANGING THRUST PACKAGE:
Remove the upper
block assembly following the instructions for changing
feed gears (place finger into the spindle feed gear to
keep the eighteen (18) balls from falling out). Remove
the feed gear and eighteen (18) balls. Clamp the spring
case 382663 and upper block assembly in the vise to
compress the thrust package. Use a 7/32" hex wrench
to remove the two (2) 1 0-32 x 1/4" set screws 382637.
Remove the assembly from the vise and slip the spring
case and thrust package out of the upper block.
REASSEMBLY:
Turn the two (2) set screws 382637 in until the tips are
nearly flush with the bore (must clear spring case).
Place one bead of thread locking liquid on outer thread
of each set screw. Using a vise (or similar device), align
the spring case (with Belleville washers inside) and
compress somewhat, until the 5/32" dia. spotface is in
the position shown. Tighten each set screw 1-1/2 turns,
and remove from vise. Set screws should retain spring
case; but allow spring stack to compress and "spring
back".
Note: Milled slot on top rim of spring case must be
visible thru cast window in the upper block.
INSTALL
REMOVE
Cast
Window
Spacer
5/32 Spot Face
