BLACKMER HD942A, Инструкции по установке, эксплуатации и обслуживанию

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COMPRESSOR ASSEMBLY
CB9A-030 page 16/28
Compressor assembly is generally the opposite of
compressor disassembly. Before reassembling, clean
each part thoroughly. Check all machined surfaces for
burrs or roughness, and file lightly if necessary.
Replace any O-rings or gaskets that are removed or
disturbed during service.
1. CRANKCASE ASSEMBLY
After replacing the crankshaft, bearing carrier, and
bearing cover plate, the connecting rod and
crosshead can be assembled in the crankcase. See
the "Bearing Replacement" section.
a. To attach the connecting rod to the crosshead
assembly, first coat the wrist pin, the wrist pin
bore in the crosshead assembly, and the wrist
pin bushing in the connecting rod with grease.
b. Start the wrist pin in the bore of the crosshead
assembly and tap lightly until the pin begins to
project through to the inside of the crosshead
assembly.
c. Slide the connecting rod up inside of the
crosshead assembly and align the bushing with
the wrist pin.
d. Lightly tap the wrist pin through the connecting
rod until it is centered in the crosshead
assembly. The wrist pin should be snug in the
crosshead assembly. The connecting rod
should rotate freely on the wrist pin, but should
not be loose.
e. Dip the wrist pin plugs in grease and press
them against the ends of the wrist pin.
f. Place the bearing halves into each half of the
connecting rod, aligning the bearing tangs with
the slots in the connecting rod. Coat the
bearing with grease.
g. Set the top of the connecting rod over the
crankshaft journal. Replace the connecting rod
cap with the dots on the connecting rod and
cap on the same side.
h. Start the nuts on the connecting rod bolts and
torque per Table 7 - "Bolt Torque."
i. Follow this same procedure for the opposite
connecting rod.
2. CROSSHEAD GUIDE
a. Place the crosshead guide gasket on top of the
crankcase.
b. Lubricate the inside bore of the crosshead
guide with light oil.
c. Set the crosshead guide over the piston rods
and the crossheads, and slowly lower it against
the crankcase. Make certain that the
crosshead assemblies are started straight in
the crosshead guide bores to prevent binding
when lowering the crosshead guide into
position.
d. Install the crosshead guide capscrews. DO
NOT tighten.
3. Fill the crankcase with oil. Refer to the "Crankcase
Lubrication" section. Squirt oil into the crankshaft,
roller bearings, crankshaft journals, and crosshead
assemblies to ensure proper lubrication at start up.
4. Attach the inspection plate and the inspection plate
gasket to the crankcase.
5. PACKING BOX ASSEMBLIES
Refer to the section 'SEAL REPLACEMENT' for
packing box assembly.
Before installing the packing
boxes into the crosshead guide, inspect the piston
rods for scoring or roughness. Remove any burrs
or sharp edges. Lubricate the piston rods and
packing box O-rings with light oil.
The packing
installation tool (Blackmer Part No. 795040)
must be used to avoid damaging the packing
when starting it over the rod.
a. Place the packing installation tool over the end
of the piston rod.
b. Install the O-ring on the lower packing box then
slide it onto the piston rod and down into the
crosshead guide.
c. Install the packing box retainer ring, with new
nylon locking inserts, and tighten.
d. Slide the oil deflector ring down over the piston
rod.
e. Place the two O-rings on the upper packing
box, then slide the box over the piston rod until
the upper packing box assembly rests on top of
the crosshead guide.
Figure 9 - Upper Packing Box Alignment
f. Note the orientation of the valve cutouts on the
packing box. The cutouts must align with the
valve pockets in the cylinder. Rotate the
packing box as needed for the proper
alignment.
g. Remove the packing installation tool from the
piston rod.
h. Repeat steps a - g for the other piston rod and
packing boxes.
6. Packing must be broken in. Finish compressor
assembly then refer to "Packing Lubrication."