Factory Cat MINI-MAG SERIES Service Manual page 91

Spray Jet does not work
properly
Turn on the
machine and re-
test
Jet motor and measure for voltage across
The Spray Jet pump motor
is bad. Replace the pump.
Mini-Mag Service Manual V1.0
MiniMAG – ALL
SPRAY JET DIAGNOSTICS
Operate machine
and verify the
customers
complaint.
Is the machine
NO NO
turned on?
YES
Disconnect both connectors to the Spray
the two terminals on the harness.
Is there battery
YES
voltage there?
NO
With a voltmeter
set to the DC scale
measure from the
positive lead to the
negative battery
terminal.
GO TO
PAGE 2
"A"
CENTRAL COMMAND CONTROLLER
1 of 2
Is there
something wrong
NO
with the Spray
Jet?
YES
Does the Is there
Spray Jet YES solution in the
pump run? tank?
Disconnect the line from the solution tank
to the Spray Jet pump at the pump. Place
end of line down to the floor.
Do you
have good
solution
flow?
There is an obstruction in
the solution system. Clear
obstruction and re-test the
spray jet.
Replace the Spray
Jet pump
Instruct owner on
proper machine
operation
Fill solution tank
NO and re-test the
machine
YES
Turn the spray jet
pump off and
remove the nozzle
YES
from the end of the
hose. Turn the
spray jet on again.
NO
Does the water
NO flow well with good
pressure?
YES
Replace the
nozzle
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