APRILIA SCARABEO 500 - 2008, Service Station Manual

Page: 218 / 324

STANDARD VALUES
Specification Desc./Quantity
80°C Temperature
1400 rpm
~ 1.5 bar
YES - go to point 7 NO go to point 8
7 - Replace the minimum oil pressure.
8 - If pressure lower than 1.3 ÷ 1.5 bar is measured.
CONTINUE - go to point 9
9 - Replace the oil filter and repeat the pressure check with oil at 80°C.
YES - go to point 10 NO go to point 13
10 - The failure is fixed.
It is recommended to observe the suggested number of kilometres covered.
11 - Check and restore the electrical system.
12 - If pressure lower than 4 bar is measured.
CONTINUE - go to point 9
13 - Remove the flywheel cover and check the efficiency of the by-pass valve and the cover sealing
gasket towards the crankcase internal side as described in the "Flywheel cover" chapter.
YES - go to point 14 NO go to 15
14 - Check whether there is an irregular clearance on the crankshaft:
- axial clearance (see the "Crankcase and Crankshaft" chapter)
- radial clearance, especially in the direction of the cylinder axis
- clearance according to the direction of rotation with the connecting rod in quadrature
YES - go to point 16 NO go to point 17
15 - Replace the faulty components (flywheel cover chapter).
16 - Overhaul the engine (crankcase and crankshaft chapter).
17 - Open the engine crankcase and remove the oil pump, as described in the "Crankcase and Crank-
shaft" chapter.
- Check the oil pump as described in the following pages.
- Check that the cooling nozzle and the timing system supply jet are properly fitted.
- Visually inspect the crankshaft couplings and their size (crankcase and crankshaft chapter).
NOTE
ANY FAILURES IN THE COUPLINGS AND IN THE TIMING COMPONENTS CANNOT BE DETEC-
TED BY THE LUBRICATION PRESSURE CHECK. THE FAILURES MAY BECOME EVIDENT BY
AN INCREASE OF NOISE.
NOTE
IN CASE OF IRREGULAR PRESSURE ON THE BASE, CARRY OUT A VISUAL AND DIMENSIONAL
INSPECTION OF THE TIMING COMPONENTS (SEE THERMAL GROUP AND TIMING SYSTEM
CHAPTER).
Engine
SCARABEO 500
ENG - 218