Oil Injection Pump Circuit Resistance Test; Oil Supply Vacuum Test - BRP E250DHLSCS Service Manual

OILING SYSTEM
OILING SYSTEM TESTS
Oil Injection Pump Circuit
Resistance Test
The complete oil injection pump
IMPORTANT:
electrical circuit includes EMM alternator output,
the engine wire harness, the injection pump wind-
ing and connectors, and the oil injector control cir-
cuit of the EMM. Check continuity of all wiring and
connections.
Disconnect the battery cables at the battery.
Use an appropriate test probe to make a connec-
tion to pin 1 of the oil injection pump connector.
Calibrate ohmmeter to the LOW OHMS scale and
measure the resistance between pin 23 of the
EMM J1-B connector and pin 1 of oil injection
pump connector.
Oil Injection Pump Circuit Resistance
2 to 3 Ω
2
1. EMM J1-B connector (pin 23)
2. Oil injection pump connector (pin 1)
An infinite reading (
•
Isolate the faulty wiring, connection, or injection
pump winding. Repair faulty wiring or replace
faulty component and retest.
For a higher than expected reading, test resis-
•
tance of the injection pump. If injection pump
resistance reading is approximately 2-3 Ω,
injection pump winding is good. Isolate faulty
component. Repair faulty wiring or replace
faulty component and retest.
196
∞
) indicates an open circuit.

Oil Supply Vacuum Test

Wear safety glasses to avoid personal
injury, and set compressed air pressure to
less than 25 psi (172 kPa).
Remove the oil pick-up assembly from the oil
tank.
Carefully remove the pickup filter and flush with a
mild solvent to remove any contamination. Rein-
stall filter.
Carefully remove the oil hose from the oil pickup
and remove the oil supply hose from the oil injec-
tion pump.
Use low pressure air to purge oil from hose.
1
1
2
1. Oil hose
2. Oil pickup
3. Low pressure air
004343
Use Plug/Holder, P/N 329661, and clamp to plug
the pickup end of the hose.
1. Plug/holder
2. Oil hose
WARNING
3
12306
2
1
12307