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MEP803A Does not crank Hurricane on its way.

Rangatira

New member
12
14
3
Location
St. Petersburg, Fl
MEP 803a does not crank. Power available at CB-1. Main switch voltage across #6 is 25vdc in stop and 0 at prime/run. The relays and fuel pump do not click. Generator started and ran fine 2 days ago with a normal shutdown after a 2 hour load test. No warning/alarm lights. Fuel level is high. Oil level is still showing on dipstick. Visible fuses are good. Any help? I have a hurricane heading this way next week. The deadcrank worked intermittently but I pulled the switch and when it is on normal mode the circuit is closed between 2 and 3 I have voltage. When I jump terminal 1 and 2 on the deadcrank I get no response. I have good voltage on #2.
 

kloppk

Well-known member
Steel Soldiers Supporter
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Pepperell, Massachusetts
Connect your meters negative lead to chassis ground. Stud on right side of the back wall behind the gauges.
CB1 IN, Emergency Switch Pulled Out, Dead Crank in NORMAL.

Measure the DC voltage at the following points in this order with S1 in Prime/Run
1) Right big stud on MT4 behind the gauge panel
2) Left big stud on MT4 behind the gauge panel
3) The right side of CR1 in the back left corner behind the gauge panel (The labeling of the parts there can be confusing)
4) The left side of CR1 in the back left corner behind the gauge panel
5) Terminal 2 of the Dead Crank Switch
6) Terminal 3 of the Dead Crank Switch
7) Both used terminals on the Emergency Off Button
8 ) Both terminals of CB1
9) Terminal 2 of S1
10) Terminal 4 of S1
11) Terminal 6 of S1
12) Terminal 8 of S1
13) Terminal 3 of S1

Let us know what you get for DC voltage at all those points with S1 in Prime/Run.
 

Rangatira

New member
12
14
3
Location
St. Petersburg, Fl
See below for values. Is there a drawing for s1. I can not see terminal 2.

1) Right big stud on MT4 behind the gauge panel--25.3vdc
2) Left big stud on MT4 behind the gauge panel-25.3vdc
3) The right side of CR1 in the back left corner behind the gauge panel (The labeling of the parts there can be confusing)-nil
4) The left side of CR1 in the back left corner behind the gauge panel-nil
5) Terminal 2 of the Dead Crank Switch-1v
6) Terminal 3 of the Dead Crank Switch-1v
7) Both used terminals on the Emergency Off Button-1.1v
8 ) Both terminals of CB1-1.1v
9) Terminal 2 of S1 can not locate
10) Terminal 4 of S1-1v
11) Terminal 6 of S1-1v
12) Terminal 8 of S1-1v
13) Terminal 3 of S1-1v
 

kloppk

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Steel Soldiers Supporter
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Location
Pepperell, Massachusetts
Looks like power is not getting from MT4 terminal 1 to CR1. Wire number 112A is attached to MT4 terminal 1. The other end of wire 112A is soldered to the right post that CR1 is soldered to. You need to check wire 112A to see why power isn't getting from MT4 terminal 1 to the right diode of CR1.
The wire number is printed on the insulation of all wires. You may need to cut a few zip ties to find the wire number.
 
Last edited:

Rangatira

New member
12
14
3
Location
St. Petersburg, Fl
Roger. I just jumped it long enough to hear the pump test. That's the issue. Can you send me a PM. I have a guy locally that has the diodes since I deploy on Monday, but I would like to talk to you about your remote starts. There are 3 of us on the ship that use these as our house backups. Thank you for everything.
 

Guyfang

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Staff member
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Location
Burgkunstadt, Germany
See below for values. Is there a drawing for s1. I can not see terminal 2.

1) Right big stud on MT4 behind the gauge panel--25.3vdc
2) Left big stud on MT4 behind the gauge panel-25.3vdc
3) The right side of CR1 in the back left corner behind the gauge panel (The labeling of the parts there can be confusing)-nil
4) The left side of CR1 in the back left corner behind the gauge panel-nil
5) Terminal 2 of the Dead Crank Switch-1v
6) Terminal 3 of the Dead Crank Switch-1v
7) Both used terminals on the Emergency Off Button-1.1v
8 ) Both terminals of CB1-1.1v
9) Terminal 2 of S1 can not locate
10) Terminal 4 of S1-1v
11) Terminal 6 of S1-1v
12) Terminal 8 of S1-1v
13) Terminal 3 of S1-1v
There is a schematic on the gen set door. It shows you S-1. There is also schematics in the TM's.
 

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