Wrench size expert
Thread Starter
Pro
Joined: May 2005
Posts: 535
Likes: 0
From: Derwood, MD
Wrench size expert
I have chased part of an oil leak to the Pressure Transmitter on my 85S (early). Before I start removing and replacing things I want to give each a 1/16 tightening before I head for SITM. I suspect the transmitter is a 19MM but have no idea what the regulator housing (screw) wrench size is. I need to procure some crows feet the correct size. Help appreciated.
Note the leak was traced using leak detector. It is not the only leak from the engine. The oil pan seeps, it looks like a little oil is coming from the drivers side cam sealing ring (rear), which begs another question, (are two questions in one topic thread permitted?), can this seal be replace without removing the engine. It looks very close to the fire wall.
Note the leak was traced using leak detector. It is not the only leak from the engine. The oil pan seeps, it looks like a little oil is coming from the drivers side cam sealing ring (rear), which begs another question, (are two questions in one topic thread permitted?), can this seal be replace without removing the engine. It looks very close to the fire wall.
Rennlist Member
Joined: Oct 2003
Posts: 7,210
Likes: 17
From: Nova Scotia
The large flange retaining the oil thermostat is 27mm and the transducer is 24mm.
The flange is a large bore (~50mm) with a fine thread pitch .... and is sealed with a soft metal tube style gasket ( hollow). If you do not have the 27mm crows foot, then drop the alternator to place a wrench on the flats: carefully - for this is one set of threads that shouldn't be "screwed" up - or one will be
. When this is secured, counterhold and tighten the conventional gasket on the transducer.
If you want a quick 'snug up', get a 24mm crows foot on the sensor - they should both respond ...
The flange is a large bore (~50mm) with a fine thread pitch .... and is sealed with a soft metal tube style gasket ( hollow). If you do not have the 27mm crows foot, then drop the alternator to place a wrench on the flats: carefully - for this is one set of threads that shouldn't be "screwed" up - or one will be
. When this is secured, counterhold and tighten the conventional gasket on the transducer.If you want a quick 'snug up', get a 24mm crows foot on the sensor - they should both respond ...
Chronic Tool Dropper
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Oct 2001
Posts: 20,506
Likes: 564
From: Bend, Oregon
I "traced" a leak from the oil sender to a power steering hose, with help and advice from 928NTSLOW (Keith) and Jim Bailey at 928 Int'l. Replaced the hose, all was well. It was not apparent that it was that red ATF in the PS system that was leaking, as it was leaving dark drips on the floor. Seems that a long term leak attracts dirt to the area, and that runs down and onto the sender when enough has leaked. It may be worth a look before you start yanking parts off.
The oil sender itself comes apart of you aren't careful, and it's a good idea to ID the terminals with a paint pen so the two wires go back correctly. Two wires, two screws, 50% chance to get it right the first time, 100% chance to get it wrong. Sounds crazy but it's true!
The oil sender itself comes apart of you aren't careful, and it's a good idea to ID the terminals with a paint pen so the two wires go back correctly. Two wires, two screws, 50% chance to get it right the first time, 100% chance to get it wrong. Sounds crazy but it's true!
