
03-36
SECTION 03 - ENGINE PREPARATION
787 ENGINE
1. Intake plates
2. RAVE valve plates
3. Pulse hose blocked with a pincher
4. Exhaust plate
Activate pump and pressurize engine to 34 kPa (5 PSI).
Wait 3 minutes and check if pressure drops; if so,
verify all testing components.
If kit components are not leaking, verify engine
jointed surfaces as per following areas:
– spark plugs
– cylinder head gasket
– cylinder base gasket
– crankcase halves
– rotary valve cover
– engine plugs
– exhaust manifold
– intake manifold (except 787 engine)
– oil injection pump (except 787 engine)
Check also small oil injection pump lines and fit-
tings; check for air bubbles or oil column going to-
ward pump, which indicate a defective check
valve.
If the above mentioned components are not leak-
ing, block both oil hoses of the rotary valve shaft
using hose pinchers.
NOTE:
If leakage stops at this point, proceed with
Rotary Valve Shaft
testing.
If there is still some leakage, remove the PTO fly-
wheel to verify outer seal.
If no leak is found on the PTO side outer seal, re-
move magneto flywheel and verify crankshaft
outer seals.
Proceed with the
Rotary Valve Shaft
testing if
the crankshaft outer seals are not leaking.
Rotary Valve Shaft
NOTE:
It is preferable to drain the injection oil
from the rotary valve shaft, but it is not mandatory.
Block oil return hose of the rotary valve shaft with
a hose pincher.
587, 657 AND 717 ENGINES
1. Oil return hose blocked with a pincher
787 ENGINE
1. Oil return hose blocked with a pincher
-
CAUTION
Do not exceed this pressure.
F01B30A
2
4
1
3
F01B31A
1
F01B33A
1
Summary of Contents for Bombardier
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