Page 6
PL92-5000EN
05/14/2012
158 Drill Head:
Refer to Illustrations “D” & “E”.
158 Drill Head Disassembly:
Remove the stop body assembly (4 screws) from the
drill head housing.
Loosen the two set screws in the side of the housing and
remove the gear stop.
Remove the cylinder assembly (3 screws) from the drill
head housing.
Remove the housing cover (3 screws) from the drill
head housing. The gearing components can now be
disassembled as shown in Illustration “E”.
158 Drill Head Assembly:
Assemble the drill head in reverse order of disassembly.
Clean and inspect all parts for excessive wear or
damage and replace as necessary with Quackenbush
replacement parts.
Apply a generous amount of Acculube grease to all
gears and bearings during assembly.
Assembly Note: Always install the spindle from the drive
gear side of the drill head housing, Figure 4.
The 158 series drill head does not require shims to
set the bevel gears. Correct engagement of the bevel
gears is obtained by running the power unit at a very
slow speed and threading it into the drill head until gear
interference is felt. Back off the power unit approximately
1/8” turn or until there is no gear interference then tighten
the lock nut. This procedure will attain maximum gear
engagement.
After the tool is assembled, place a few drops of 10W
machine oil in the air inlet before attaching the air supply.
This will insure immediate lubrication of all parts as soon
as air is applied.
Gear Stop Adjustment:
There are two methods that can be used to adjust
the gear stop. The preferred method is to make the
adjustment during assembly of the drill before the retract
body and it’s related components are attached to the
drill head, see Method 1.
Method 1 (during assembly): Place the gear stop in
position with the two clutch rollers located on top of
the cam lobes, rather than in the detents. Turn the two
set screws, in the side of the housing, clockwise until
the springs begin to make up solid but are not crushed
or distorted. Now rotate the two set screws counter-
clockwise 90-180 degrees. With this method, it is easier
to determine when the spring makes up solid so there
is less tendency to force the screw in to deep causing
damage to the spring.
Method 2 (fully assembled unit): The clutch rollers are
normally sitting in the detents. Turn the two set screws,
in the side of the housing, clockwise until the springs just
begin to go solid. Care must be taken not to distort the
springs. Once the solid state is achieved, rotate the set
screws counter-clockwise 2-1/4 full turns plus 90-180
degrees. Important: Too much tension can result in
gear damage.
158-15 Drill Head:
Refer to Illustrations “F” & “G”.
158-15 Drill Head Disassembly:
Remove the motor adapter (LH thread) from the drill
head housing. Remove the hex drive adapter, drive
coupling, spacer, bearing, and bevel gear from the drill
head housing.
Remove the retract body assembly (4 screws) from the
drill head housing.
If used, remove the upper jam nut (LH thread) from the
spindle. Loosen the set screw in the side of the upper
stop collar and remove the stop collar (LH thread) from
the spindle.
Remove the nose adapter (LH thread) from the drill head
housing. The spindle assembly can now be removed
from the drill head housing.
Quackenbush
®
Service Instructions
Figure 4
Install spindle from
this direction only.
(8 pages)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals