BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual

Page: 163 / 427

Section 04 ENGINE
Subsection 05 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
04-05-2
MMR2004-114_04_05A.FM
8. Activate pump and pressurize engine to 34 kPa
(5 PSI). Do not exceed this pressure.
9. Engine must stand this pressure during 3 min-
utes. If pressure drops before 3 minutes, check
tester kit by spraying a soapy solution on pump
cylinder, all plugs and fittings.
– If tester kit is leaking, bubbles will indicate
where leak comes from.
– If tester kit is not leaking, check engine as per
following procedure.
PROCEDURE
NOTE: A flow chart has been prepared as a visual
reference. See last page of this chapter.
Using flow chart and following text, pressurize
area to be tested and spray soapy solution at the
indicated location.
– If there is a leak at the tested location, it is rec-
ommended to continue testing next items be-
fore overhauling engine. There is a possibility of
more than one leak.
– If there is no leak at the tested location, contin-
ue pumping to maintain pressure and continue
with next items until leak is found.
Engine
Check the following:
1. All jointed surfaces and screw/stud threads of
engine:
– spark plug base, insulator
– cylinder head
– RAVE valve bellows, piston and housing
– cylinder
– crankcase halves (joint)
– oil injection pump mounting flange
(O-ring, seal)
– coolant pump housing
– bleed screws/plugs.
2. Small injection oil lines coming from pump.
1. Injection nipples
2. Small injection oil lines
Check for air bubbles or oil column going toward
pump. It indicates defective check valve in injec-
tion nipples.
3. Remove cooling system cap.
Check for air bubbles in antifreeze. It indicates de-
fective cylinder head O-ring or cylinder base gasket.
4. Remove drive pulley then check crankshaft outer
seal.
5. Remove rewind starter and magneto system
then check crankshaft outer seal.
6. Check pump shaft gear oil reservoir.
Pump Shaft Oil Gear Reservoir
Install air pump on adapter and pressurize as be-
fore.
TEST PRESSURE: 34 kPa (5 PSI)
FOR 3 MINUTES
A32C1GA
1 2 1
A32C1HA