Replacing the Alternator Regulator

Tourist · 26th July 2022, 21:00

Some time ago I got a Charge Failure message so, expecting the worst, I bought a replacement alternator regulator from DMRGS.

The car then worked fine for another 12 months, but today the battery light is on and the message is back - time to replace the regulator.

I've read the fitting instructions and have removed the engine cover and air intake, along with the positive lead to the alternator, but am a bit stuck with getting the plastic cover off the back of the alternator.

Does anyone have a spare alternator that they could photograph the back of for me so I can see what I'm doing?

Failing that, does anyone know what size the nuts are, and how many there are holding that cover in place?

While I've got it all apart I'm going to remove the inlet manifold and EGR valve to clean them both out - at 112,500 miles, it's probably long overdue!

Many thanks :-)

Arctic · 26th July 2022, 22:48

[QUOTE]

Quote:

Originally Posted by Tourist

Some time ago I got a Charge Failure message so, expecting the worst, I bought a replacement alternator regulator from DMRGS.

The car then worked fine for another 12 months, but today the battery light is on and the message is back - time to replace the regulator.

I've read the fitting instructions and have removed the engine cover and air intake, along with the positive lead to the alternator, but am a bit stuck with getting the plastic cover off the back of the alternator.

Does anyone have a spare alternator that they could photograph the back of for me so I can see what I'm doing?

Failing that, does anyone know what size the nuts are, and how many there are holding that cover in place?

While I've got it all apart I'm going to remove the inlet manifold and EGR valve to clean them both out - at 112,500 miles, it's probably long overdue!

Many thanks :-)[/QUOT

E]

Hi Simon.
The link below may help you.

https://www.the75andztclub.co.uk/for...sh+replacement

Tourist · 27th July 2022, 11:27

Ha! You lifesaver Arctic!! Thanks a lot for that, I searched but obviously not well enough.

Yesterday I ended taking the front off the car, as far as and including the bonnet slam panel as I couldn't get the air duct off - the bolts just turn in the captive nuts in the plastic.

With that info I can get it apart and see what's what.

The car has been absolutely perfect and has been treated like a workhorse recently so it's nice to pay it back a bit with some love and attention!

Tourist · 28th July 2022, 16:20

Well, I got it replaced - but still the battery light remains on, and my battery voltage when the engine running is measuring only 11.9 volts.

Time for a new alternator.

I've seen that DMGRS and other places list a replacement alternator that fits all Diesel R75s - how can this be when the early cars had a three pin connection, and the later cars only two?

MSS · 28th July 2022, 16:38

Quote:

Originally Posted by Tourist

Well, I got it replaced - but still the battery light remains on, and my battery voltage when the engine running is measuring only 11.9 volts.

Time for a new alternator.

I've seen that DMGRS and other places list a replacement alternator that fits all Diesel R75s - how can this be when the early cars had a three pin connection, and the later cars only two?

The third pin was unused so the 2-pin can replace the earlier 3-pin type.

26th July 2022, 21:00	#1
Tourist Loves to post 2004 Rover 75 Tourer CDTi Join Date: Apr 2016 Location: Fulbourn, Cambridge Posts: 455 Thanks: 105 Thanked 123 Times in 101 Posts	Replacing the Alternator Regulator Some time ago I got a Charge Failure message so, expecting the worst, I bought a replacement alternator regulator from DMRGS. The car then worked fine for another 12 months, but today the battery light is on and the message is back - time to replace the regulator. I've read the fitting instructions and have removed the engine cover and air intake, along with the positive lead to the alternator, but am a bit stuck with getting the plastic cover off the back of the alternator. Does anyone have a spare alternator that they could photograph the back of for me so I can see what I'm doing? Failing that, does anyone know what size the nuts are, and how many there are holding that cover in place? While I've got it all apart I'm going to remove the inlet manifold and EGR valve to clean them both out - at 112,500 miles, it's probably long overdue! Many thanks :-)

27th July 2022, 11:27	#3
Tourist Loves to post 2004 Rover 75 Tourer CDTi Join Date: Apr 2016 Location: Fulbourn, Cambridge Posts: 455 Thanks: 105 Thanked 123 Times in 101 Posts	Ha! You lifesaver Arctic!! Thanks a lot for that, I searched but obviously not well enough. Yesterday I ended taking the front off the car, as far as and including the bonnet slam panel as I couldn't get the air duct off - the bolts just turn in the captive nuts in the plastic. With that info I can get it apart and see what's what. The car has been absolutely perfect and has been treated like a workhorse recently so it's nice to pay it back a bit with some love and attention!

28th July 2022, 16:20	#4
Tourist Loves to post 2004 Rover 75 Tourer CDTi Join Date: Apr 2016 Location: Fulbourn, Cambridge Posts: 455 Thanks: 105 Thanked 123 Times in 101 Posts	Well, I got it replaced - but still the battery light remains on, and my battery voltage when the engine running is measuring only 11.9 volts. Time for a new alternator. I've seen that DMGRS and other places list a replacement alternator that fits all Diesel R75s - how can this be when the early cars had a three pin connection, and the later cars only two?