Reassembly approaches!

htr · Aug 4, 2014

Two questions:
1 - the motor has been sitting empty of oil since April, I've removed and fitted an oil pump kit and reassembled. What is the procedure for priming the motor with oil prior to start up? Yes I did prime the OP when refitting it but it may have drained into the sump.

2 - Where abouts in the sump is the best place to drill and mount the oil temp sensor. On the end facing the FR wheel, or at the rear of the sump?

Winu · Aug 4, 2014

Don't drill sump - just put sensor instead of drain plug.

htr · Aug 4, 2014

Now that's a good idea!

Nodge68 · Aug 4, 2014

Winu said:
Don't drill sump - just put sensor instead of drain plug.

This^^^^
Just use 1 or 2mm silicone wire and a soldered on connector for long life.

teddywood1 · Aug 4, 2014

as regards oil if it is fresh oil and it is up to the mark on the dip stick then drain some from the sump and put it back into the engine leave for a minute then start up

htr · Aug 5, 2014

Nodge68 said:
This^^^^
Just use 1 or 2mm silicone wire and a soldered on connector for long life.

Sorry but I don't understand that. Do you mean solder

Nodge68 · Aug 5, 2014

htr said:
Sorry but I don't understand that. Do you mean solder

hd3 · Aug 5, 2014

not intending to highjack the thread .. but ..
is 'temp.-sensor-in-drainplug' feasible for the IRD ?

never thought of that idea 'till i read this thread ..
and IRD oil temp. is something i'd like to keep an eye on

~~~

cheers ~ S ~

Nodge68 · Aug 5, 2014

hd3 said:
not intending to highjack the thread .. but ..
is 'temp.-sensor-in-drainplug' feasible for the IRD ?

never thought of that idea 'till i read this thread ..
and IRD oil temp. is something i'd like to keep an eye on

~~~

cheers ~ S ~

Not in the drain plug as it's liable to get damaged by contact with the ground. Why not fit it to the filler plug, this would still work just as well.

hd3 · Aug 5, 2014

Not in the drain plug as it's liable to get damaged by contact with the ground.

good point .. thanx

Why not fit it to the filler plug, this would still work just as well.

if you reckon it'll work as well .. i'll give that a go ..

~~~~~

at one point thought about .. somehow .. attaching a temp. sensor to the casing ..
near the prop-shaft output bearing ..
would rather take the reading from inside the casing

cheers Nodge for the reply on that

jamesmartin · Aug 5, 2014

hd3 said:
not intending to highjack the thread .. but ..
is 'temp.-sensor-in-drainplug' feasible for the IRD ?

never thought of that idea 'till i read this thread ..
and IRD oil temp. is something i'd like to keep an eye on

~~~

cheers ~ S ~

id have thought regular oil changes would be of more use

hd3 · Aug 5, 2014

id have thought regular oil changes would be of more use

that as well

but .. thought being able to have realtime ird oil temp available
it might be an added indicator should the vcu start to stiffen-up when it aint supposed to ..
or .. that something else be causing extra stress on the ird at a time that it would not be expected ..

Nodge68 · Aug 5, 2014

hd3 said:
that as well

but .. thought being able to have realtime ird oil temp available
it might be an added indicator should the vcu start to stiffen-up when it aint supposed to ..
or .. that something else be causing extra stress on the ird at a time that it would not be expected ..

Don't forget that the IRD is hooked up to the cooling system. This is supposed to keep the oil temperature at a sensible level. I suspect that in reality, in the UK anyway, the IRD is actually heated to coolant temperature.
The case temperatures i've seen would appear to support that.

htr · Aug 5, 2014

Nodge68 said:
Using a drilled and threaded sump plug is what I'd do to.
The electrical connection to the sensor needs to be durable as it will need to disconnected every time you change the oil.

Ah, I see. Yes that's clear, thanks.

hd3 · Aug 5, 2014

Don't forget that the IRD is hooked up to the cooling system.

yeah that did slip my mind ..

though .. thanx for the info on that

GrumpyGel · Aug 5, 2014

hd3 said:
that as well

but .. thought being able to have realtime ird oil temp available
it might be an added indicator should the vcu start to stiffen-up when it aint supposed to ..
or .. that something else be causing extra stress on the ird at a time that it would not be expected ..

I was thinking that when I go back 4WD I want to do my best to know if there are VCU/IRD issues occurring. The easiest I thought was a temp sensor mounted on the outside of the IRD case by a pinion bearing. Run it to an Arduino or something that will throw an LED if the temp rises rapidly or is running warmer than usual.

It would be quite easy to test if the sensor was able to pick up on something wrong - just drop the PSI in 1 tyre and see if the temp sensor noticed anything different.

The first thing that happens when the IRD goes (in my case) is the bearings being ground to a pulp. For this to happen there must be so much force going through the bearing that it would presumably heat to well over the engine's coolant temperature. Its a case of whether this heat would permeate through the casing.

Reassembly approaches!

htr

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