Macnaught HG20R User manual

HG 20R(Rigid) and HG20F (Flexible) OIL CONTROL GUNS
0003
INTRODUCTION
Thank you for purchasing a Macnaught oil dispensing gun
complete with either a flexible or rigid extension. The
Macnaughtoildispensinggunshavebeendesignedforuse
with engine oil, gear oil, automatic transmission fluid,
anti-freeze/anti-boil and compatible fluids.
Macnaught also manufacture a complete range of ratio oil
pumps and retractable oil hose reels, greasing equipment
andaccessoriestofulfillallyourfluidhandlingand greasing
needs requirements.
GENERAL INFORMATION
This manual assists you in operating and maintaining your
new oil control gun. The information contained will help you
ensure many years of dependable performance and trouble
free operation.
Pleasetake a fewmoments to readthrough this manualbefore
installing and operating your new oil control gun. If you
experience problems with this product, refer to the trouble
shooting sections of this manual. If you require further
assistance please contact your local Macnaught distributor
or authorised Macnaught service centre.
IMPORTANT INFORMATION
READ THIS INFORMATION
CAREFULLY BEFORE USE.
Your safety is important to us. Please read and follow all
safety instructions listed inside.
Some of these instructions alert you to the potential for
personal injury. “Cautions” listed throughout this manual
advise of potential practices or procedures which may
cause damage to your equipment.
Ensure all operators have access to adequate instructions
about safe operating and maintenance procedures.
Do not exceed the maximum working pressure of 6900
kPa / 1000 psi / 69 bar.
CAUTION
Do not hit the oil control gun if it fails to operate. Refer to
“trouble shooting guide” or return the unit to your nearest
authorised service centre.
Never point the nozzle at yourself or anyone else.
Never exceed the pressure rating of any component
installed in the System.
Before every use check all hoses for signs of wear, leaks
or loose fittings. Tighten all fluid connections regularly and
replace weak or damaged hoses
Before attempting any repairs or maintenance of this
product firstly disconnect the air supply from the oil pump,
then release the oil line pressure by squeezing the lever on
your oil control gun.
ASSEMBLY
Use teflon tape (or suitable thread sealant ) when connecting
the oil control gun to an oil hose.
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OUTLET NOZZLE OPERATION
When fluid flows through the gun the outlet nozzle will
automatically open. When the fluid flow stops the outlet
nozzle will automatically shut
HANDLE OPERATION
To latch the handle, squeeze the lever, push the button and
then release lever.
To release the latch in manual mode simply squeeze and
release lever.
Please read and retain this instruction manual to assist
youin the operationand maintenance ofthisquality product.
INSTRUCTION MANUAL
HG616
0206

Before carrying out any maintenance disconnect
the air supply to the pump and release the fluid
pressure in the system by pressing the lever on the
control gun.
Inspect your oil control gun daily for any signs of damage.
Replace any damaged parts or components as required.
CONTROL HANDLE DISASSEMBLY
Use a clean bench to carry out maintenance.
A) Remove the oil hose from the control gun inlet swivel
(21).
B) Unscrew and remove swivel (21) washer (19) and o’ring
(20) from the control gun inlet. (Clean or replace the
swivel strainer and o’ring if required).
Caution the swivel is under spring tension
D) Remove the screw (23), then unclip and remove the
trigger guard (22).
C) Remove valvespring (18), seal/valvebodyassembly (17).
and plunger (15).
LEVER and VALVE REMOVAL
A) Using a 2.5mm allen key, remove the 2 handle screws
(10).
B) Remove lever (11), ease downwards.
C) Remove the washer (7), “O”Ring (8), then push the valve
cam (9) from the gun body (6), and remove “O”Ring (8).
CONTROL HANDLE REASSEMBLY
A) Clean and inspect all parts. Replace any suspect, worn or
damaged components.
Note: Lightly lubricate the valve cam before assembly.
B) Place “O”Ring (8) onto valve cam (9).
Note: The cutout section in the middle of the valve cam (9)
must face the inlet swivel (21).
C) Replace the valve cam (9) into the body (6). Note the
orientation shown on the assembly drawing. Fit the
second “O”Ring (8) and washer (7).
D) Slide lever assembly (11) into position and replace the two
allen screws (10). (Use Loctite or similar sealant).
E) Replace plunger (15).
Note: The end hole in the plunger must face the gun outlet.
F) Replace the seal/valve body assembly (17), and spring
(18) and replace into the gun body (6).
Note: Install the spring, small end first.
H) Replace washer (19), o’ring (20) on to the swivel assembly
(21), and screw firmly into place (Use Loctite or similar
sealant).
Note: After assembly ensure the handle latch is operating
correctly.
2
G) Re-fit the trigger guard (22) and replace screw (23).
PARTS DIAGRAM
HGFNZ
1
2345
6
7
8
9
10
11
810
12
13
14
15
18
19
20
21
22
23
Note: If the plunger has not been removed the cam will not
release from the body.
17

3
SPARE PARTS LIST
** Order HGFEX for Flexible Extension
TROUBLE SHOOTING GUIDE
TROUBLE CAUSE REMEDY
No fluid passing through the gun Blocked strainer Clean or replace strainer
Constant oil leak from the nozzle Damaged plunger seal Replace plunger seal ( check for damage )
Intermittentdrip from the nozzle Dirtin the nozzle (50) Remove the nozzle and blow outanydirtparticles,
replace ifnecessary.
Oil leak from the lever assemblyarea
Damaged o’rings (19) Replacedamaged o’rings
Low flow rate Blocked strainer (37) Replace strainer
Oil leaking from the swivel inlet Damaged o’ring or swivel Replace damaged o’ring or swivel
ORDER FOR REPLACEMENT
ITEM PART NO. NO OFF PART/SET No KIT. REF DESCRIPTION
HG20-1K (Kit A) Seal Kit
1 HG570 1 HG570s Automatic Nozzle
2 HG510 1 Ridgid Tube
3 N429 1 HG505s Compression Fitting
4N428 1 Olive
5 HG512 1 1/2" NPT Outlet Adaptor
6 HG265 1 HG265s Body Casting
7 HG036 1 A Washer
8BS111 2 A O'Ring
9HG030 1 A Camshaft
10 N55 2 A C'sk Screw
11 HG266 1 HG010As Handle (Latching)
11 HG269 1 HG012As Handle (Non-Latching)
12 HG025 1 Lever Plug
13 HG024 1 HG022s Button Spring
14 HG022 1 Lever Button
15 HG032 1 Plunger Cage
17 HG038 1 HG032s Valve body and Seal assy
18 HG033 1 A Spring
19 HG045 1 A Washer
20 BS117 1 A O'Ring
21 HG040A 1 HG040As incl HG045 / BS117 Sw ivel Assembly (BSP)
21 HG043A 1 HG043As incl HG045 / BS117 Sw ivel Assembly (NPT)
22 HG268A 1 HG268s Guard Assembly
23 N46 1 C'sk Screw
24 TD81 1 A Filter Mesh
25 BS113 1 A Filter O'Ring

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SPECIFICATIONS:
Flow Range: 1-25 l/min ( 0.26 – 6.6 US gal/min)
Maximum Pressure: 69 BAR / 6900 kPa / 1000 PSI
Weight:
Swivel Inlet: 1/2” BSPT or 1/2” NPT
Outlet: 1/2” NPT
Wetted Parts: Aluminium, Mild Steel, Nitrile Rubber
FluidCompatibility: Engine Oil, Diesel Oil, AutomaticTransmission Fluid,
Mixture. (Maximum Viscocity SAE140)
0.8 kg
Macnaught Pty Ltd
POBox90ArncliffeNSW2205Australia
Telephone[phone]
Facsimile [phone]
Email: [email protected]
Web:www.macnaught.com.au
MacnaughtPtyLtd(“Macnaught”)warrantsthatallProductsmanufacturedbyMacnaughtand
purchasedafter 1st of July1999will be free fromanydefects caused by faultymaterialsor
workmanshipforaperiodof(5)yearsfromthedateofpurchaseoftheproduct,providedthat
duringtheWarrantyperiod:
1) Macnaughtreceives notice settingoutfull details ofany defect in anyproduct and
detailsofthetimeandplaceofpurchase.
2) ThePurchaser,attheirowncostreturnstheproducttothenearestauthorized Macnaught
servicecenter.
Forcomponentrycontainedintheproduct,(such as o’rings,seals,springsandhoses) which
aresubjecttowear,thewarrantyperiodwillbe(12)monthsfromthedateofpurchase of the
product.
Macnaughtshall,atitsoptionrepairorreplaceanyproductfounddefectivebyitsinspection.
Thiswarrantydoesnotcoverfailureofpartsorcomponentswhich,inthejudgmentofMacnaught,
arisesfrommisuse,abrasioncorrosion,negligence,accident,substitution of non-Macnaught
parts,faultyinstallationortampering.
IfMacnaughtinspectiondisclosesnodefectinmaterialorworkmanship,repair orreplacement
andreturnwillbemadeatcustomarycharges.
Macnaught’sliabilityandthepurchaser’s rights under this Warranty shall belimitedtosuch
repairor replacement andin particular, shallnot extend toany direct, special, indirect or
consequentialdamageorlossesofanynature.
Theforegoingwarrantysupersedes,voidsand is in lieu of all oranyotherwarranties.
“Note:Thiswarrantydoesnotformpartof,nordoesitconstitute,acontractbetweenMacnaught
andtheend-userorpurchaser.Itisadditional toanywarrantygivenbytheselleroftheproducts.
Thiswarrantydoesnotexclude,limit,restrictormodify the non-excludablerightsorremedies
conferredupontheend-userorpurchaser,orthenon-excludableduties or liabilities imposed
onthe seller orMacnaught,by Part V,Divisions 2 and 2AoftheTradePractices act 1974
(Commonwealth)orotherlegislativeprovisions.Macnaught otherwiseexcludes,totheextent
permittedbylaw,anyrightsconferredontheend-user or duties orliabilitiesimposeduponit.”
WARRANTY POLICY