Mercury 90-863160

OILDYNE TRIM PUMP SERVICE MANUAL NUMBER 28
Page 5A-8 90-863160 MAY 2000
OUT/UP Pressure Test
NOTE: The numbers in parentheses, e.g. (3), refer to the trim pump hydraulic system dia-
gram on page 5A-11.
1. Leave valve “A” open and close valve “B.”
2. Run pump OUT/UP while observing the gauge. The reading should be 2200-2600 psi.
(15173-17932 kPa).
If gauge reading is within specifications, proceed to step 3.
If gauge reading is not within specifications, perform the following:
Replace UP Pressure Release Valve Proceed toReplace UP Pressure Release Valve
(3) and Retest
Reading OK
Proceed to
Step 3
Reading NOT OK
Replace Thermal Relief Valve (4) and Proceed toReplace Thermal Relief Valve (4) and
Retest
Reading OK
Proceed to
Step 3
Reading NOT OK
Replace Adaptor (2)