ULPOWER UL35Oi, Installation Manual

Page: 53 / 60

Installation Manual UL POWER UL350i UL350i F UL350i S UL 350i HPS 350i SA
MI 350A01 Revision No: 7 Date: 2014-09-15 Page: 53 of 60
Oil Pressure
The oil pressure sensor should not be directly screwed into the engine block, and is therefore
connected by means of a flexible pressure line in order to avoid sensor failure due to engine
vibrations. The sensor can be attached to the engine mount frame or the firewall.
Oil pressure is measured in the main oil gallery at the left side of the engine casing, where M10x1
thread is foreseen.
An oil pressure sender line kit consisting of 1m Stainless Braided PFE Hose, Oil Pressure Sensor
Adaptor (2), Banjo (3) with Banjo Bolt (4) and Copper Sealing Rings (5) comes with the engine. The
length of the line will depend on where you would like to install the sensor. Determine the length
and assemble the line as follows:

Apply tape around the hose at the point you wish to cut it to length. This way the stainless steel
braid will stay in position and doesn't unravel; a cleaner cut is obtained.

Cut hose with a metal saw or grinding disc in such a manner that a nice straight end is obtained.

Unscrew the socket screw (4) of the oil
pressure sensor fitting (6). Be careful not to
loose the brass cone (5) that sits inside.

Before removing the tape, slide the socket
screw over the hose including the stainless
steel braid.

Remove the tape.

Open the stainless steel braid towards the outside to free the end of the inner plastic tube. As
shown on the image above. Do not unravel the braid too much.

Slide/push the brass cone (5) over the plastic tube all the way to the end.

Push the oil pressure sensor adaptor fitting (6) into the tube.

Pull back the socket screw towards the fitting and screw onto the fitting as far as possible. Make
sure the steel braid does not go in between the thread. Use two spanners - one to hold fitting,
the other to tighten the lock screw.

Repeat on other side with the banjo fitting.

Clean the oil pressure line thoroughly to ensure no metal, rubber or other particles are inside
before connecting the line.
Once oil line is assembled, connect it to the engine. Tighten banjo bolt and washers to ensure
proper sealing. However, be careful not to damage thread in casing by over tightening the banjo
bolt (max. 25Nm torque).
(1)
(2)
(5)
(4)
(5)
(6)
(4)
(3) (1)
(2)
Interface for oil
pressure sensor
(cockpit)