Quackenbush 158/15QRA Service Manual - Quackenbush
Page 5
PL92-5000EN
05/14/2012
Warning Labels:
The warning labels on these tools are essential parts
of the product and are not to be removed. Check labels
regularly and replace any that are not clearly legible.
The Nosepiece safety label number is 202691.
Storage:
If it is necessary to store this tool for an extended period
of time (overnight, weekend, etc.), it should receive a
generous amount of lubricant at that time and again
when returned to service. Always store the tool in a
clean dry environment.
Torque Specifications for Fasteners:
Basic engineering practice should be used when
assembling threaded components. Tightening torque
values are shown on the exploded views as a guide
for disassembly and re-assembly. The “Hand” image
indicates “Hand Tighten”.
Disassembly:
Remove the lock ring from the internal gear. Using a
suitable wrench, remove the internal gear (RH thread)
from the motor housing. The planet cage assembly
can now be removed from the internal gear and the
component parts disassembled.
158-15 Series: The drill head assembly utilizes a motor
adapter for assembly to the power unit.
Gearing:
Refer to Illustration “C”.
Gearing Disassembly:
Remove the lock ring from the internal gear. Using a
suitable wrench, remove the internal gear (RH thread)
from the motor housing. The planet cage assembly
can now be removed from the internal gear and the
component parts disassembled.
158 Series: Remove the bevel gear (RH thread) from
the planet cage to permit disassembly of the front planet
cage ball bearing and washer.
Assembly:
Apply a generous amount of No. 2 Moly grease to all
gearing components during assembly.
Assembly Note: Assemble the tang end of the planet
gear pins toward the front of the planet cage so the
planet cage washer will lock them in position, Figure 2.
Motor Module:
Refer to Illustrations “A” & “B”.
Motor Disassembly:
To remove the motor assembly from the motor housing
invert the tool in the vise. Remove the handle nut (RH
thread) and remove the handle assembly from the motor
housing. The complete motor assembly can now be
removed through the rear of the motor housing.
Remove the magnet rotor (LH thread) from the motor
shaft to permit disassembly of the rear bearing plate and
bearing.
Using a soft mallet, tap the motor shaft out of the front
ball bearing. This will allow the disassembly of the front
bearing plate, cylinder, rotor blades and rotor.
To remove the ball bearing from the front bearing plate,
remove the bearing retainer (LH thread) from the front
bearing plate.
Motor Assembly:
The rotor blades should be replaced during each
maintenance cycle or if they are worn 1/16” below the
rotor surface, Figure 3.
Assembly Note: The beveled edge of the blade is the
trailing edge. The rotor and cylinder have an “R” etched
on one end. The “R” should be facing the rear to insure
clockwise rotation, Figure 3.
Quackenbush
®
Service Instructions
Planet Gear
Pin Tang
Figure 2
Planet
Cage
Figure 3
“R”
Toward
Air Inlet
1/16” Maximum
Rotor Blade
Beveled Edge
is Trailing Edge