EP80w-90 in a P38 Auto box

marjon · Sunday at 10:00

When the motor is off can you physically turn the shaft for Hi/lo to check its not jammed somehow?

J

aaronparke1 · Sunday at 10:28

Datatek said:
Take the motor off, get someone to move the gear lever across the gate, with the ignition on and look to see if the motor operates. If the motor operates, move the gear lever to low, turn off the ignition and refit the motor ensuring the shaft engages with transfer box and doesn't move as you fit it. Then try and see if it will shift to high.
If the motor does not operate when off the transfer box, it's likely that it being jammed has blown the drive transistors in the ECU which resides under the passenger seat, any smell of burning down there?

No burning smell. Off outside now to spend an hour underneath...

aaronparke1 · Sunday at 11:34

marjon said:
When the motor is off can you physically turn the shaft for Hi/lo to check its not jammed somehow?

J

OK, so the motor is turning. The shaft turns freely with the motor off. But it still won't clonk into high. ??

aaronparke1 · Sunday at 11:39

Could I have put the transfer box together without the pinion that pulls the gears across properly engaged? So the rod turns but it isn't pulling the gears across?

marjon · Sunday at 12:07

aaronparke1 said:
Could I have put the transfer box together without the pinion that pulls the gears across properly engaged? So the rod turns but it isn't pulling the gears across?

Did you use a manual when you rebuilt it?
I would find it hard to think it could be bolted together if something was wrong/not seated properly, but if something got left out

.

If the motor moves as the position of the stick, the shaft moves freely, then at this point it sort of points towards something you have done.
If the shaft turns can you select neutral? Or does nothing change when turning it?

I cant really help as have not taken 1 apart. In the link I posted earlier there is a file for the transfer box too.

I wonder if @Bemble would know if it could be put together wrong?

J

aaronparke1 · Sunday at 12:16

marjon said:
Did you use a manual when you rebuilt it?
I would find it hard to think it could be bolted together if something was wrong/not seated properly, but if something got left out .

If the motor moves as the position of the stick, the shaft moves freely, then at this point it sort of points towards something you have done.
If the shaft turns can you select neutral? Or does nothing change when turning it?

I cant really help as have not taken 1 apart. In the link I posted earlier there is a file for the transfer box too.

I wonder if @Bemble would know if it could be put together wrong?

J

I think it's pointing to me having put it together wrong. I'm thinking the forks may not be engaged in the gear that gets pulled properly. When first fit, I engaged low and heard it clunk into low but then it seems to move back and forward freely but doesn't pull the gears.

marjon said:
Did you use a manual when you rebuilt it?
I would find it hard to think it could be bolted together if something was wrong/not seated properly, but if something got left out .

If the motor moves as the position of the stick, the shaft moves freely, then at this point it sort of points towards something you have done.
If the shaft turns can you select neutral? Or does nothing change when turning it?

I cant really help as have not taken 1 apart. In the link I posted earlier there is a file for the transfer box too.

I wonder if @Bemble would know if it could be put together wrong?

J

My thoughts are that I've set the fork wrong. It clunked into low when first fit but them moves freely to and fro without performing.
I reckon the slots are both either in front of or behind the collar on the gear that is pulled.

aaronparke1 · Sunday at 12:22

Is this potentially the problem? Parts circled in blue...

Mark Piercy · Sunday at 13:12

Yep, always go back to the last thing you touched

marjon · Sunday at 13:17

aaronparke1 said:
Is this potentially the problem? Parts circled in blue...

Yes.
If you put it in then did put the arm in the correct place.

The arm goes over the lip, not in front or behind.

40secs in

J

aaronparke1 · Sunday at 13:20

marjon said:
Yes.
If you put it in then did put the arm in the correct place.

The arm goes over the lip, not in front or behind.

40secs in

J

Yup, just what I was thinking... bummer but hey ho.

aaronparke1 · Sunday at 13:31

It must have slipped out of the tabs as I fought with it on my knees... in the snow...

marjon · Sunday at 14:57

aaronparke1 said:
It must have slipped out of the tabs as I fought with it on my knees... in the snow...

I guess we know what your doing next? how are your knees

.

I really don't know any other way, if you cant select any other position by turning the shaft.

J

aaronparke1 · Sunday at 15:53

marjon said:
I guess we know what your doing next? how are your knees .

I really don't know any other way, if you cant select any other position by turning the shaft.

J

My knees are working OK. The pain they give me when i use them as designed is another matter...

aaronparke1 · Monday at 17:16

Aha! It appears I neglected to pop the little sleeve (circled red) that goes onto the selector rod back on. Now fitted, box back together, it seems to work as it should.
Now... time to fight it back off the ground and refit.
I have adapted my trolley jack to assist...

Datatek · Monday at 17:18

aaronparke1 said:
Aha! It appears I neglected to pop the little sleeve (circled red) that goes onto the selector rod back on. Now fitted, box back together, it seems to work as it should.
Now... time to fight it back off the ground and refit.
I have adapted my trolley jack to assist...

Good luck with it young man, they are bloody heavy.

aaronparke1 · Monday at 17:19

Datatek said:
Good luck with it young man, they are bloody heavy.

Yes. This will be the second lift for me and my 52yo body. On axle stands... in the melted snow. Such fun keeping old motors alive!

Datatek · Monday at 17:21

aaronparke1 said:
Yes. This will be the second lift for me and my 52yo body. On axle stands... in the melted snow. Such fun keeping old motors alive!

52? A real youngster! I can't work in the cold as I have Reynaud's syndrome and my hands cease to work.

aaronparke1 · Monday at 17:29

Datatek said:
52? A real youngster! I can't work in the cold as I have Reynaud's syndrome and my hands cease to work.

Hey, me too. Dead man's fingers and toes down to the second knuckle. Such a painful thing.

Mark Piercy · Monday at 17:38

Jeez I'm doing OK then at 52

aaronparke1 · Monday at 17:43

Mark Piercy said:
Jeez I'm doing OK then at 52

Unfortunately Raynauds is not age related. I've had it since my teens.
Otherwise I'm pretty fit!

EP80w-90 in a P38 Auto box

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