In/Down Pressure Test - Mercury BRAVO Service Manual

OILDYNE TRIM PUMP

IN/DOWN Pressure Test

NOTE: The numbers in parentheses, e.g. (3), refer to the trim pump hydraulic system dia-
gram.
1. Close valve "A" and open valve "B."
2. Run the pump IN/DOWN while observing the gauge. The reading should be 400-600
3. Run pump IN/DOWN until gauge reading reaches 400-600 psi (2759-4138 kPa). Stop
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psi (2759-4138 kPa).
If gauge reading is within specifications, proceed to step 3.
If gauge reading is NOT within specifications, perform the following.
Replace DOWN Pressure Replace DOWN Pressure
Release Valve (6) and Retest
Reading NOT OK
Install Trim Pump Install Trim Pump
Rebuild Kit
Reading NOT OK
Replace Adaptor (2)
pumping IN/DOWN. Pressure should not fall below 350 psi (2414 kPa).
If gauge reading above 350 psi (2414 kPa), DOWN Pressure Test completed.
If gauge reading below 350 psi (2414 kPa), perform the following:
Check For External Oil Leaks; Check For External Oil Leaks;
Correct (5) And Retest
Reading NOT OK
Install Trim Pump Install Trim Pump
Rebuild Kit And Retest(1)
Reading NOT OK
Replace Adaptor (2)
SERVICE MANUAL NUMBER 28
Proceed to Proceed to
Reading OK
Proceed to Proceed to
Reading OK
Pressure Pressure
Reading OK
Completed
Pressure Pressure
Reading OK
Completed
90-863160 MAY 2000
Step 3
Step 3
Down
Test
Down
Test