BLACKMER NGH1013, Инструкции по установке, эксплуатации и обслуживанию

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COMPRESSOR DISASSEMBLY
CB6A-210 page 20/32
CYLINDER / ADAPTOR REMOVAL
14. To remove the Adaptor (Figure 7)
a. Remove the Adaptor to Distance Piece bolts
b. Install Packing Installation/Removal Tool on
the threads of the Piston Rod to deter
packing damage.
c. Slide Adaptor off from Distance Piece
carefully making sure only the packing
contacts the Piston Rod during removal.
d. Remove the Adaptor/Cylinder O-Ring
15. To remove Upper Packing Box Assembly (Figure 7)
a. Verify the Packing Installation/Removal Tool
is installed on the Piston Rod
b. Remove the Upper Packing Box Assembly
bolts from the Upper Packing Box flange.
c. Slide the assembly out of the Adaptor using
the threaded holes and two of the bolts.
d. The packing box will come out as a complete
assembly.
Details on packing box rebuilding are
scheduled to be available after July 1 st , 2017.
e. Note there is a crush gasket at the bottom of
the packing box. Take care not to damage if
reuse
is planned. Replacement is
recommended.
16. To remove Distance Piece (Figure 8)
a. Remove the Distance Piece O-Ring
b. Remove Distance Piece to Crosshead Guide
bolts.
c. It is recommended the Distance Piece be
removed with the Lower Packing Box still
installed to allow for the best control of
alignment.
d. Remove the Distance Piece from the
Crosshead Guide carefully as to not damage
the piston rod.
17. To remove Lower Packing Box Assembly (Figure 8)
a. Verify the Packing Installation/Removal Tool
is installed on the Piston Rod.
b. Remove the Lower Packing Box Assembly
bolts from the Lower Packing Box flange.
c. Slide the assembly out of the Distance Piece
using the threaded holes and two of the bolts.
d. The packing box will come out as a complete
assembly. Details on packing box rebuild are
in Section XX.
e. Note there is a crush gasket at the bottom of
the packing box. Take care not to damage if
reuse
is planned. Replacement is
recommended.
18. To remove Oil Seal (Figure 8)
a. On the Crankcase side of the Distance Piece
there is an oil seal.
b. Remove the circular snap ring with a flathead
screwdriver carefully.
c. The seal will be damaged during removal
due to the snap ring groove and must be
replaced if removed.
19. To remove Crosshead Guides (Figure 8)
a. Remove the Crosshead Guide O-Ring
b. Remove the Crosshead Guide to Crankcase
bolts except one of the top bolts
c. Properly support the Crosshead Assembly
as it will fall during disassembly and removal
of the Crosshead Guide.
d. Remove the final bolt and remove the
Crosshead Assembly carefully. Two people
may be necessary to do this safely.
e. Remove the Crankcase O-Ring
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. Carefully separate the cap from the rod using a
soft punch and soft wedge. The rod bolts are a
slight press fit and may be difficult to remove.
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.
Connecting rods and crosshead assemblies can
only be replaced in pairs as they are balanced to
each other.
20. 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.
21. If necessary, the wrist pin bearings can be replaced
after the crossheads are removed. The small end of
the connecting rod is fitted with two roller bearings
separated by a spacer. When properly installed, the
roller bearings should protrude 0.075" (1.9 mm) on
each side of the conrod.
22. To replace the crankshaft bearings, the crankcase
must be disassembled, and the crankshaft removed.
Refer to "Bearing Replacement" for disassembly
instructions.