Service manual

OILDYNE TRIM PUMP SERVICE MANUAL NUMBER 28
Page 5A-10 90-863160 MAY 2000
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
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 Proceed toReplace DOWN Pressure
Release Valve (6) and Retest
Reading OK
Proceed to
Step 3
Reading NOT OK
Install Trim Pump Proceed toInstall Trim Pump
Rebuild Kit
Reading OK
Proceed to
Step 3
Reading NOT OK
Replace Adaptor (2)
3. Run pump IN/DOWN until gauge reading reaches 400-600 psi (2759-4138 kPa). Stop
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;
Down
Pressure
Check For External Oil Leaks;
Correct (5) And Retest
Reading OK
Pressure
Test
Completed
Reading NOT OK
Install Trim Pump
Down
Pressure
Install Trim Pump
Rebuild Kit And Retest(1)
Reading OK
Pressure
Test
Completed
Reading NOT OK
Replace Adaptor (2)
INDEX