Issue 2.0 – 10/12/15 - 1152 Longitudinal Transaxle Sportscar Gearbox Manual
© 2015 - Xtrac Limited, Gables Way, Kennet Park, Thatcham, Berkshire. RG19 4ZA.
Xtrac Inc, 6183 W. 80th Street, Indianapolis, IN 46278. United States
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NOTE: If an oil cooler is not fitted, a link pipe should be fitted between the oil out and
oil in fittings to allow the oil to re-circulate and pass through the dedicated feeds.
4.2.2. Dedicated Oil Feeds
There are dedicated oil feeds/sprays to the dog rings, mainshaft gear hub bearings,
pinion & pinion bearings, differential cassette, crownwheel & crownwheel bearings,
reverse idler bearing and the forward-most layshaft bearing. Please refer to drawing
1152-950-100A for a graphical layout of the oil system.
All other components are adequately lubricated from the ‘splash’ lubrication of the oil
inside the gearbox.
4.2.3. Sensors
Provision has been made for an oil temperature sensor. A temperature sensor
(customer supply) can be positioned on the rear of the gearbox where a M12 x 1.5
thread is provided. Xtrac recommend using the Bosch NTCM12 temperature
sensors, see section 10 Appendix D – Electrical Component Data Sheets.
4.2.4. Filtration and Magnets
A steel mesh filter (125 micron (0.005”) gauze size), which is easily accessible from
the rear of the gearbox can be readily checked to reveal any evidence of tooth/dog
damage and replaced accordingly. If there is a build up of debris, the filter MUST be
replaced for a new one. Note that the flow of oil through the filter is inside to outside,
so any debris will be found inside the filter and not on the outer surface. The oil drain
plug has an integral magnet which will attract and retain debris. This can also be
used as an indication of tooth/dog wear.
4.2.5. Setup/Running Conditions
Oil Type Xtrac XL1 or any other fully synthetic SAE
75W90 gear oil
Oil Quantity 1.6 litre + line/cooler volume
Optimum Sump Temperature 90 - 110°C (194 - 230°F)*
Minimum/Maximum System Pressure Minimum 0.5 Bar/Maximum 1.9 Bar
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