Macnaught K53-01 User manual

KP103 Issue19 © 2017 1
K53 & K54 AIR OPERATED
POWER PISTOL
INSTRUCTION MANUAL
Thank you for pur hasing a Ma naught air operated
Power Pistol.
The Macnaught Power Pistol models K53( 50g) and K5
( 00g) are single shot air operated grease guns, suitable
for bulk, cartridge or grease pump filling with greases up to
and including NLGI No.2 consistency.
A wide range of Macnaught greasing accessories including
Flexible Extensions, Needle Point Couplers, Adaptors and
Button Head Couplers are available from your Macnaught
dealer.
Please read and retain this instruction sheet to assist you
in assembly and maintenance of this product.
OPERATION
The Power-Pistol injects a single shot of grease at each
pull of the trigger, enabling the user to control the amount
of grease delivered. The trigger must be completely pulled
back to achieve maximum pressure. Exhaust air will exit
behind the trigger.
Always dis onne t the air supply line before servi ing.
SELECT FOLLOWER POSITION
Note:
Refer to Fig 1 for the orre t follower position.
How to select Follower position
(Fig 1)
HOW TO BULK FILL BY SUCTION
Note: Select the correct follower position
(see Fig 1).
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.3)
4) Unscrew the barrel from the gun body.
5) Release the follower rod from the barrel slot.
6) Insert the open end of the barrel into the grease, pull the rod
back slowly, and at the 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 slot.
7) Wipe clean and screw the gun body assembly onto the
barrel.
8) Unlock the follower rod from the barrel and apply light
pressure on the pull handle (Fig.5), at the same time press the
ball in the filler bleeder until grease appears.
9) Connect the air and pull the trigger several times. If grease
does not appear at the coupler repeat step 8.
10) Unlock the follower rod and push the rod into the barrel.
Note: Should the gun fail to deliver grease refer to the Trouble
Shooting Guide on page 3.
(Fig 3)
(Fig 2)
Introd ction
CAUTION
In ludes models
K53-01
K5 -01
Need Assistance?
Macnaught USA Inc [phone] [email protected]

KP103 Issue19 © 2017 2
FAST FILLING WITH A J3 GREASE PUMP
Note: Select the correct follower position (see Fig 1).
1) Lock the follower rod (Fig 2).
2) Slide the filler bleeder valve into the nozzle on the pump
(Fig ).
3) Fill with grease until the groove in the rod is visible at
the end of the barrel.
4) Repeat steps (8), (9), (10) refer (How to bulk Fill).
(Fig ) (Fig 5)
HOW TO INSTAL A CARTRIDGE
Note: Select the correct follower position (see Fig 1).
Repeat steps (1) to (2) above
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.
6) Repeat steps (8), (9), (10) as above.
PARTS DIAGRAM
(Fig 6)

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SPARE PARTS LIST
For easier model identifi ation:
*Note:
Models manufa tured before April 2003 were powder oated dark grey in olour.
Models manufa tured after April 2003 are light grey in olour.
TROUBLE SHOOTING GUIDE
TROUBLE CAUSE REMEDY
Gun fails to deliver grease. a) Air trapped in the pressure chamber. a) Disconnect Flexible hose assembly (2). Apply pressure
to the pull handle (25), refer to Fig 6. Pull the trigger until
grease starts flowing.
Note: It may be necessary to remove the outlet body to
release the air in the pressure chamber. When grease
appears at the gun outlet ensure that the ball (5) and
spring ( ) is in place then replace the outlet body(3).
b) Dirt under the outlet ball (5). Clean ball and seat
a) Piston assembly (10) faulty. (check for
escaping air through the vent holes in the
body (7).
Replace Piston assembly
b) O’ring (16) damaged. (check for air
escaping from under the trigger).
Replace with o’ring
Gun fails to deliver the correct grease
pressure
Kit A - K53-1K
Kit B - K27-2K (K53 ONLY) or KF14A-2K (K54 ONLY)
K53 (450g) m odel K54 (400g) m odel
Order for repla ement Order for repla em ent
Item Part or set Part or set Qty Kit Ref Part Name
K53-1K K53-1K (KIT A) OVERHAUL KIT
K27-2K KF1 A-2K (KIT B) FOLLOWER KIT
1 KY KY 1 COUPLER
2 KF9 KF9 1 FLEXIBLE EXTENTION
3 1 A OUTLET VALVE BODY
1 A OUTLET VALVE SPRING
5 1 A STEEL BALL
6 1 A FILLER BLEEDER ASSEMBLY
7 n/a - new gun required n/a - new gun required 1 BODY CASTING
8 1 A O'RING (BS010)
9 1 A PISTON SPRING
10 1 A PISTON ASSEMBLY
11 1 A AIR MOTOR SEAL RING (BS035)
12 1 A TRIGGER PIVOT SCREW
13 1 A NIPPLE
1 1 A TRIGGER
15 1 A AIR VALVE STEM
16 1 A O'RING (BS006)
17 1 A GLAND NUT
18 n/a - new gun required n/a - new gun required 1 HANDLE CASTING
19 1 A AIR VALVE
20 1 A AIR VALVE SPRING
21 1 A O'RING (BS01 )
22 1 A RETAINER CAP
23 5 SOCKET HEAD CAP SCREW
2 1 BARREL
26 1 END CAP
30 1 B SEAL WASHER
25 KF36 KF111s KF35s KF27s 1 PULL HANDLE
27 1 FOLLOWER ROD
28 1 FOLLOWER SPRING
29 1 B FOLLOWER ASSEMBLY

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TECHNICAL SPECIFICATIONS
Pressure Ratio 50:1
Air Supply Pressure Range 275kPa ( 0psi) to 825kPa (120psi)
Recommended Air Pressure 620 kPa (90psi)
Compressor Size 0.026 m3/min. (1 cfm or above)
Air Inlet Thread ¼ ” BSP.
Output per shot 1 cm3(approx)
For Warranty Terms and Conditions see ma naught. om.au
For a list of Australian Servi e Centres see ma naught. om.au
Note:
This product should be disposed of according to all applicable local
and national government environment regulations and guidelines.