How To “Lock” The Follower; To Bleed Air From Grease; Trouble Shooting; The Variable Stroke Feature - Macnaught Flexigun K29 Instruction Manual

4) Hold Flexigun and pump J3 handle. The Follower Rod
will slowly move out the end of the barrel because the
Follower is "locked" to the rod.
5) Stop pumping when groove in Follower Rod is visible.
Overfilling can cause grease to by-pass the follower.
6) Bleed air from grease (see Fig 5).
How To "Lock" the Follower
There is a slot in the front face plate of the Follower Assy.
The Follower Rod has a matching lug which allows the
Rod to be "locked" to the Follower so force can be applied
to the Follower to expel any air pockets in the grease.
To "lock" the Follower, align the Follower Rod lug and
Follower slot. Pull the Rod back then turn through 90 deg.
How to Lock Follower
Rotate the follower to align the lugs to the slot in the follower
UNLOCKED LUGS
PARRALLEL TO SLOT
To "unlock" the Follower, gently push and turn the Follower
Rod. When the lug and slot are aligned, the Rod will be
free to move through the follower.

To Bleed Air From Grease

Normally there is no need to bleed air through the Filler/
Bleeder Valve. The gun will self bleed by pumping the
handle 5 to 10 times.
After each reload of grease:
1) Release the Follower Rod from the End Cap.

TROUBLE SHOOTING

TROUBLE
1) Gun pumps little or no
grease.
2) Grease leaks past
follower
3) Unable to remove KY coupler
KF139 Issue 18 © 2017
LOCKED LUGS
90° TO SLOT
Fig 4
CAUSE
a) Air lock – Follower stuck in cartridge.
b) Air lock – Grease too thick or cold.
c) Check valve (10) ball seat damaged or dirty.
d) Body outlet (6) ball seat dirty or damaged
e) Worn or damaged Piston O-ring.
a) Follower (15) damaged or perished.
b) Over filling gun when using filler pump
c) Follower in wrong position for bulk Grease.
Coupler is a tight fit on the grease Nipple
2) Gently push and turn the rod until it goes fully into the
barrel.
Pump the handle until grease appears at the coupler
(usually 5 to 10 times is sufficient).
If the grease is thick, cold or "tacky", or an air-lock is
present, you will need to bleed the gun as follows:
Force air out through the Filler/Bleeder valve:
Important: Follower must be "locked" to rod ( see Fig 4).
1) Release Follower Rod From slot in end cap.
2) Unscrew the Filler/Bleeder Valve two full turns
(see Fig 5). Lock the Pull rod into the follower.
PUSH
3) Place the rod Pull Handle on a flat surface and push
gun down firmly (see Fig 5). Some grease will appear
before air is expelled.
4) Close the Filler/Bleeder Valve by hand, firmly.
5) Gently push and turn the Follower Rod until it goes
fully into the Barrel.

The Variable Stroke Feature

Your Flexigun is fitted with an extra Check Valve which
allows you to use shorter hand strokes for fast easy
greasing and to achieve higher pressures. The Handle
does not have to return all the way to its original position
before the next pumping stroke.
REMEDY
1) Check condition of cartridge. Replace if damaged.
2) "Lock" follower to rod (refer fig 4 ) and push follower into cartridge.
1) Consult grease supplier.
2) Store grease gun and grease away from extreme cold.
1) Remove check valve (10).
2) Clean and inspect all components. Replace as Required.
Important - use Loctite (or similar) thread sealant on check valve threads.
Remove spring (3) and ball (4). Disassemble, clean, and inspect all
components. Replace as required.
Remove handle (20), pull out plunger (13) and replace O-ring (12).
Replace follower (15).
Stop pumping filler pump when groove on piston rod
back of barrel. Refer to filling instructions
If using bulk grease, Follower must be forward (Fig 1)
Refer to the instruction on the "Notes" page
FILLER BLEEDER
FOLLOWER ROD
Fig 5
i
s visible at the
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