04-08-2015, 03:09 AM
On my 77 coach I had occasion to use the engine batteries to start the gen by using the merge switch and then left the switch on to charge the whole lot. Have yet to have that arise in the 93 coach.
The 77 coach had but one house battery versus two engine batteries so merging with a depleted house battery couldn't pull the engine batteries down enough prevent the gen from starting.
An emergency work-around would be to disconnect the battery terminals from the house batteries, run jumper cables to the house cables from the engine batteries, start the gen, reconnect the house batteries and then remove the jumper cables. This way you avoid the house batteries pulling down the engine batteries that you would experience with the merge solenoid engaged.
The 77 coach had but one house battery versus two engine batteries so merging with a depleted house battery couldn't pull the engine batteries down enough prevent the gen from starting.
An emergency work-around would be to disconnect the battery terminals from the house batteries, run jumper cables to the house cables from the engine batteries, start the gen, reconnect the house batteries and then remove the jumper cables. This way you avoid the house batteries pulling down the engine batteries that you would experience with the merge solenoid engaged.
Jon Kabbe
1993 coach 337 with Civic towed