Macnaught BG100, Instruction Manual, Page: 4 / 8

4
Note: Select the correct follower position (see Fig 1 )
HOW TO INSTALL A CARTRIDGE
Note: Should the gun fail to deliver grease refer to the Trouble
Shooting Guide on page 8.
7) Wipe clean and screw the gun body assembly onto the
barrel.
5) Release the follower rod from the barrel slot.
Note: Select the correct follower position (see Fig 1)
HOW TO BULK FILL BY SUCTION
4) Repeat steps (7), (8), (9) refer
(How to instal a cartridge).
Note: Select the correct follower position (see Fig 1 )
FAST FILLING WITH A J2 GREASE PUMP
1) Lock the follower rod (Fig.2)
2) Slide the filler bleeder into the nozzle
on the pump (Fig.5).
3) Fill with grease until the groove in the
rod is visible at the end of the barrel.
(Fig 2)
1) Pull the follower rod back until the rod groove can be pulled
into the barrel slot.
2) Remove the large end cap from the cartridge.
3) Slide the large open end first into the barrel.
4) Remove the small end cap from the cartridge.
5) Screw the gun body assembly onto the barrel.
9) Unlock the follower rod and push the rod into the barrel.
6) Unlock the follower rod from the barrel.
7) Lock follower rod (Fig 2), and apply light pressure on the
pull handle (Fig.3), at the same time press the ball in the
filler bleeder until grease appears.
(Fig 3)
8) Pull the trigger. If grease does not appear at the coupler
repeat step 7.
1) Lock follower (Fig 2)
2) Unscrew the barrel from the gun body 2 to 3 turns.
3) Pull the rod back and retain in barrel slot (Fig.4)
(Fig 4)
4) Unscrew the barrel from the gun body.
6) Insert the open end of the barrel into the
grease, pull the rod back slowly, and at same
time push the barrel into the grease.
Pull back the rod until the groove in the rod
appears then push the rod into the barrel
8) Repeat steps (7), (8), (9) refer (How to install a cartridge).
(Fig 5)
NOTE: The most common reason for no grease delivery or
slow grease recovery, is either the grease gun has not
been bled of air correctly or oil seperation from the grease
has occurred and the grease is now too thick to flow through
the gun correctly.
To help prevent oil seperation of the grease. When the gun
is not in use, release the spring tension from the follower,
by pulling back the follower rod, and lock it into the back of
the barrel.
DISASSEMBLY
NOTE: The electrical components of the BG100 grease gun
are not user serviceable (eg, Battery Charger, Battery, Trigger
Switch or Motor). Any if any electrical component in this gun is
found to be defective or damaged, either the complete
Handle assembly (includes = Motor, Trigger Switch, Plastic
body housing) or Battery or Battery charger must be ordered.
2) Unscrew and remove the 4 pozi-drive screws (4) .
3) Carefully remove the head assembly (6) from the handle
assembly (3 ).
1) To remove the battey, press the two buttons located on
either side of the battery at the same time pull the battery
out of the handle assembly
4) Remove the 4 pozi-drive screws (12) and carefully remove
the nozzle casting assembly (11 ) from the head (6 ).
5) Carefully remove all the components (springs and balls )
from the nozzle casting (11) and head assembly (6), clean
and inspect for any signs of wear or damage.
6) Replace any worn or damaged components. Do not reuse
the original pozi-drive screws.
1) Ensure that both ball seats in the head casting (6 ) are
clean and contamination free before assembly.
ASSEMBLY
2) Fit the 2 steel balls (8) into the head casting (6) followed by
the 2 check valve springs (9).
3) Check that the face seal (10 ) is not damaged. Replace if
found to be worn or damaged.
4) Carefully fit the nozzle casting (11) to the head casting (6),
ensuring that all the springs, balls and plunger remain in
position, and fit the 4 new socket head screws (12).
5) Carefully align the flat on the motor shaft to the
corrosponding flat in bore of the shaft in the head casting
and slide together.