does HJ61 need battery/alternator to run in emergency?

Submitted: Wednesday, May 25, 2005 at 18:26
ThreadID: 23301 Views:2147 Replies:5 FollowUps:4
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Hi there,

I am considering a situation where the baterries/alternator are gone and I have a power pack to start up the engine. I wonder does the engine need any electrical power to run once it's started up? Everything essential in this truck seems to be mechanical... or is there some electric circuitry that controls the engine?

thanks,

Joseph
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Reply By: Member - Davoe (Widgiemooltha) - Wednesday, May 25, 2005 at 18:37

Wednesday, May 25, 2005 at 18:37
not a thing you can pull off the fuel control rod and tow start it and it will run. My camper used to get electronic whine when listening to faint radio stations so i would disconnect the rod and turn off the ignition no worries. This is assuming you are talking of an 2h motor
AnswerID: 112845

Reply By: Tim HJ61 (WA) - Wednesday, May 25, 2005 at 21:32

Wednesday, May 25, 2005 at 21:32
Joseph,

From memory you have a 12ht import from Japan. Remember you will need a 24v power pack to start it - unless you do Davoe's trick and push start it.

I'd doubt a 12v power pack would turn it over, but you could try in the safety of home base to see what might happen if you ever needed to. Let us know if you do this.

Tim
AnswerID: 112897

Follow Up By: Member - Davoe (Widgiemooltha) - Wednesday, May 25, 2005 at 22:25

Wednesday, May 25, 2005 at 22:25
ahh more info! 12 ht uses a fuel control solonoid rather than mechanical rod and edic motor. before trying a start you would need to ensure the solönoid has power a real backward step as I have seen them fail and if they do you are stuffed
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FollowupID: 369060

Follow Up By: figtree - Thursday, May 26, 2005 at 08:53

Thursday, May 26, 2005 at 08:53
Hi Tim,

there are 24V power packs available, in the price range of $1000. I simply got two 12V power packs with 600 cranking amps. The 24V starter motor actually needs half as many apms as 12V motor, so there was no reason for this not to work.I tried to start it up at home with these packs connected in series.It is not a problem at all, I started it up a few times within 5 minutes and the packs hardly needed any charging after that. These packs cost me about 1/3 of the 24V pack....

Joseph
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FollowupID: 369121

Follow Up By: Tim HJ61 (WA) - Thursday, May 26, 2005 at 09:59

Thursday, May 26, 2005 at 09:59
Good Joseph.

Sounds like you've got it sorted, and got a couple of power sources for lights etc too.

Tim
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FollowupID: 369128

Reply By: Member - Jeff M (WA) - Wednesday, May 25, 2005 at 22:40

Wednesday, May 25, 2005 at 22:40
My 1994 Rocky ran with no battery connected. Once when I was down the shops the beast wouldn't start, popped the bonnet to find the positive terminal had snapped. I held the lead on while the missus started it then chucked it down the side of the battery and drove home. But in that instance I spose the alternator would have been powering it....
AnswerID: 112921

Follow Up By: traveller2 - Thursday, May 26, 2005 at 08:09

Thursday, May 26, 2005 at 08:09
And every time you revved it the alternator output would have gone way up, most vehicles need the battery to be connected for voltage regulation.
Disconnecting the battery while the engine is running usually leads to alternator meltdown.
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FollowupID: 369112

Reply By: traveller2 - Thursday, May 26, 2005 at 08:17

Thursday, May 26, 2005 at 08:17
Years ago I had a battery/ alternator meltdown on a 2H powered troopy, once it was going we just tied the rod from the EDIC motor to the manifold to keep it in the right postiton.
As has been said the 12HT has a fuel stop solenoid and you would have to activate it. It has been activated with 2 x 6v torch batteries on a 12v vehicle but 24v would require 4.
As I have an automatic 24v 4wd vehicle I've been interested in how to start it and keep it going if the unthinkable happens. Other than another two 12v batteries from two accompanying vehicles I haven't come up with any solutions. It has a fuel stop solenoid but you still have to turn the motor over to start it, no clutching an auto!
AnswerID: 112949

Reply By: Jim-Bob - Thursday, May 26, 2005 at 10:26

Thursday, May 26, 2005 at 10:26
G'day figtree.

I had a 3L 2.8ltr 4runner 89 model with an electric fuel shutoff soleniod and if or when I had a flat battery I would unscrew the top of the soleniod and remove the spring & plunger, replace the top, push to start/stall to stop(manual) no probs, get you home ok.
Now I have a 3ltr TD 01 model Praydo,crikey,could be long walk.

Safe travells
Jim-Bob.
AnswerID: 112962

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