Gardner Denver HD-2250, Operating And Service Manual

Page: 19 / 47

Page 12
POWER END INTERNAL LUBE SYSTEM
(FIGURE 2-2, page 10, and FIGURE 2-3,
page 11)
There is a single inlet for the lube oil,
coming from the lube oil pump. After
entering the inlet, the lube oil flow is divided
into two lines:
1.
Through external hoses and rotating
unions the lubrication oil enters the
crankshaft where it is distributed to the
connecting rod journal bearings and the
knuckle bearing and wrist pin bearings.
2. Through the lubrication manifold, oil is
distributed to the main bearings and
the outside of the crosshead.
There is one drain hole on the bottom of the
power frame. User plumbing will direct
drain oil flow back into the lube sump.
FLUID END (FIGURE 2-4)
The conventional valve over valve
configuration offers field proven valve and
spring performance. Improvements in the
fluid end life come from:
1.
New sophisticated methods of
metallurgical control which enable us to
obtain steel with very consistent
chemical components and mechanical
properties. This results in extended
cylinder life.
2.
Internal edges and corners are hand
radiused, blended and polished for
improved resistance to fatigue
cracking.
3.
Extreme pressure autofrettage for long
cylinder life and resistance to cracking
at the bore intersection areas.
FLUID END (FIGURE 2-4)