Aussie Pumps MINE BOSS SCUD 351 Manual de instrucciones del operador - Página 10
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Aussie Pumps
TROUBLE SHOOTING GUIDE (for engine troubleshooting refer to engine manual)
FAULT
Pump running normally but
pressure low on installation
Fluctuating Pressure
Pressure low after period of
normal use
Pump Noisy
Presence of water in oil
Water dripping below pump
Oil Dripping
Unloader switches
repeatedly when gun is off
Leaky piston rod
Leaky by-pass at nominal
pressure
Pressure gauge shows high
pressure fluctuations when
shutting off gun
Pressure in supply line when
running on by-pass
Engine will not start
WORK SMART ... STAY SAFE
10
CAUSE
Pump sucking air
Valves sticking
Unloader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
Valves worn
Valves blocked
Pump sucking air
Worn piston packing
Nozzle worn
Check valves worn
Check valves blocked
Unloader valve seat worn
Worn piston packing
Pistons cracked as a result of dry running
Air in suction
Broken or weak suction or delivery valve
spring
Foreign matter in valves
Worn bearing
Excessive temperature of liquid
Oil seal worn
High humidity in air
Piston packing worn
Safety valve activated due to pressure
spike
Thermal dump activated
Piston packing worn
O.R plunger retainer worn
Travel plug in use on pump
Oil seal worn
Leaking gun &/or pressure pipe.
Leaky sleeve
Worn out kick-back valve body
Leaky seals
Defective O-Ring/Support Ring
Nozzle too small, too much water.
Worn out by-pass valves
Valve set too high above operating
pressure
Dirty valve
Dirty or worn low pressure valves
Out of fuel
Engine defect
| Aussie Scud Mine Boss (Class A) ... Operator's Instruction Manual
REMEDY
Check water supply & possibility of air ingress.
Check & clean or replace if necessary
Check & replace
Check & replace
Check & replace
Check & replace
Check & replace
Check water supply & air ingress at joints in suction line
Check & replace
Check & replace
Check & replace
Check & clean
Check & replace
Check & replace
Replace pistons
Check water supply & connections on suction line
Check & replace
Check & clean
Check & replace
Reduce temperature
Check & replace
Check & change oil twice as often
Check & replace
Reset safety valve (see page 13), if it keeps activating
replace unloader
Activates if water temperature exceeds 60°C. Should
self reset once water in pump cools. If not, replace
Check & replace
Check & replace
Replace with breather plug
Check & replace if necessary
Renew gun, seal pressure pipe
Renew sleeve
Check & renew as necessary kick-back valve plate & seat
Renew seals
Renew piston rod seals & examine surfaces in guide
case
Install larger nozzle
Examine & renew as necessary
Adjust the unloader at the operating pressure.
Clean valve (removing lime deposits etc).
Grease parts before installing.
Remove & clean or replace low pressure valves
Fill tank with petrol/diesel
Return to engine service agent
Jan 2019