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40-500 Gas
Grout Pump Automatic & Manual Troubleshooting
Turn engine off and relieve hydraulic pressure and grout pressure before troubleshooting.
Note:
Typically there is a wiring diagram on the gray Geo-Loop electric box inside the cover. If not we
can e-mail you a copy to help troubleshoot your problem.
These are wires pertaining to operation of grout pump manual and auto switches.
First let's talk through the circuit that typically will fix the problem, if the grout pump electric
troubleshooting guide will not fix the problem.
Starting with 12 volt DC from the grout pump fuse, red 14 gauge wire power supply to both
toggle switches.
grout pump auto switch (either terminal).
Grout pump auto toggle switch (black wire, load side of switch) powers the common terminal
on the ratchet relay
to the micro switches on the grout cylinders.
(1)
Red 14 gauge wire
power supply from
grout fuse
(5)
From grout pump auto
single pole single throw
toggle switch load side
Note: old style micro
switches use a black wire
(see 8B diagram on page
40-500 Gas Wiring Diagram
(1)
Grout pump manual switch has jumper wire from center terminal over to
(3)
located in the gray Geo-Loop electric box and two blue wires
Oil cooler fan 15 amp fuse
2).
Keyed power 10 amp fuse
Power in from battery 30 amp fuse
July 27, 2018
(5)
going
Red wire – grout pump
15 amp fuse
(3)
Ratchet Relay Com
1
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Table of Contents
Summary of Contents for Geo-Loop 40-500
- Page 1 Turn engine off and relieve hydraulic pressure and grout pressure before troubleshooting. Note: Typically there is a wiring diagram on the gray Geo-Loop electric box inside the cover. If not we can e-mail you a copy to help troubleshoot your problem.
- Page 2 40-500 Gas July 27, 2018 New style micro switch with weather resistant plug, blue and brown wire (see picture below). Old style micro switch, black and white wire (see picture below). Use N.O. 1 com and N.O. 3 terminals only.
- Page 3 40-500 Gas July 27, 2018 2 brown wires from grout cylinder micro switch to ratchet relay coil (14) Ratchet relay coil plunger (12) Ground Lug (16) Plastic rocker The two brown wires returning from the micro switch (white on older models, pre 2011) go to power the coil on the ratchet relay.
- Page 4 40-500 Gas July 27, 2018 If the grout pump micro switches and ratchet relay all tests good, then test the two coils on the hydraulic solenoid valve (32). With grout pump auto switch turned off, engine off and all hydraulic and grout pressure relieved.
- Page 5 40-500 Gas July 27, 2018 If you have a full 12 volt DC power to coil and a good ground on white and green wires in gray electric box copper ground lug, and it does not magnetize, replace coil. If the coils test good and magnetize one at a time, by moving grout pump manual 3 position switch up or down, then move on to the last step that very seldom ever fails.
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