2-76. SKID-MOUNTED HIGH PRESSURE PUMP ASSEMBLY REPLACEMENT
It may be necessary to loosen 2 in. grooved pipe coupling to remove C-6 grooved pipe coupling.
Remove two nuts, two bolts, two coupling halves, and gasket from connection C-6. Disconnect high pressure
Following directions on skid, use suitable lifting device to remove pump assembly.
Following directions on skid, use suitable lifting device to install pump assembly.
Check gasket removed from C-6 for damage. If gasket is damaged, replace it. Apply thin coat of silicone
lubricant to gasket lips and outside of gasket.
Place gasket over end of connection C-6, being sure it doesn't overhang end of connection.
Aline end of high pressure hose with connection. Slide gasket to center portion between connection groove and
hose groove. No portion of gasket should overhang grooves.
Place coupling halves over gasket. Make sure coupling half keys are in grooves on connection C-6 and hose.
Install two bolts. Place nuts on bolts and hand-tighten.
Overtightening nuts may cause gasket to pinch. Tighten nuts only until coupling halves are firmly
Tighten nuts alternately and equally until coupling halves are firmly together.
Add fuel. (See TM10-4610-229-10.)
Plug in pretreatment assembly power cable.
Install suction hose on pump inlet.