BLACKMER HD942A, Инструкции по установке, эксплуатации и обслуживанию

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COMPRESSOR DISASSEMBLY
CB9A-030 page 15/28
8. REMOVING THE CONNECTING ROD
ASSEMBLIES (with the crossheads attached).
The piston rod is permanently attached to the
crosshead to form a single assembly. Do not
attempt disassembly.
a. Drain the oil from the crankcase.
b. Remove the inspection plate from the
crankcase.
c. Remove the locknuts from the two connecting
rod bolts. This will release the connecting rod
cap (the lower half of the connecting rod) and
the two halves of the bearing insert. The
connecting rod and the connecting rod cap are
marked with a dot on one side so that they can
be matched properly when reassembling.
d. Lift the crosshead assembly and connecting
rod off the crankshaft.
NOTICE: The connecting rod parts are not
interchangeable and must be reassembled with
the same upper and lower halves. To avoid
confusion, work on one connecting rod at a
time, or mark the individual halves with
corresponding numbers.
9. Remove the opposite connecting rod and
crosshead assembly.
10. Rest the crosshead assembly on a bench.
Carefully drive the wrist pin and wrist pin plugs out
of the crosshead and connecting rod using a
suitable pin driver or an arbor press. Removal of
the pin releases the crosshead assembly from the
connecting rod.
11. If necessary, the wrist pin bushings can be replaced
after the crossheads are removed. Make sure the
oil hole in the new bushing aligns with the oil hole in
the connecting rod. New bushings must be honed
to the proper size after installation. Inner
Dimension = 1.2511" to 1.2514" (31.778 mm to
31.786 mm).
12. To replace the crankshaft bearings, the crankcase
must be disassembled, and the crankshaft
removed. Refer to "Bearing Replacement" for
disassembly instructions.
Figure 8 - Packing Boxes, Crosshead
and Connecting Rod Detail