Doc No: OMM50001243
Rev: C Page 53 of 68
This document and all the information contained herei
n are the confidential and exclusive property of TechnipFMC,
and may not be reproduced, disclosed, or made public in
any manner prior to express written authorization by TechnipFMC.
Figure 20: Connecting Rod and Crosshead Removal
11. If damaged, remove the crankshaft oil seal (13) using a
screwdriver or similar object and discard the old seal.
12. Tapered roller bearing cones (12) must be heated to aid in
assembly onto the shaft. Always observe proper safety
procedures and use heat resistant tools and gloves when
handling hot parts. There are a number of recommended
methods for heating bearings. Electric ovens or electrically
heated oil baths may be used, but only when accompanied
by proper thermostatic control.
13. To replace the tapered roller bearings on the crankshaft,
heat the cones to a maximum of 300 F (149 C). Slide
them down the shaft unit they are full seated against
shoulder. The hot cone may pull away from the shoulder
unless it is held in position until it cools enough to grab the
shaft. Use a .001" thick feeler gauge to ensure the cone is
fully seated against the shoulder after parts have cooled.
14. Thoroughly clean all parts with solvent and apply a thin coat
of oil before reassembly.
15. Use a press to seat the new cups (11) into the bearing
housings. Never use new bearing cones with old bearing
cups. Always use matched sets from one manufacturer.
16. Reassemble the crosshead assemblies and connecting
rods. Match the marked connecting rod and crosshead
back together. Ensure that the set screws (24) retaining
the wrist pins (5) are in place (if they were removed for
repair or inspection of the wrist pin bushing). The set screw
must engage the flat on the wrist pin. For pumps using a
single set screw, apply a thread locking compound to
ensure that it will remain tight. Refer to Table 7: Torque
Values for Critical Pump Fasteners for torque
specifications.
17. Push the crosshead/connecting rod assemblies fully
forward in power frame to provide maximum clearance for
crankshaft installation. Ensure crosshead assemblies are
replaced in the same orientation and in the same cylinder
bore they were originally.
To Next Page
Loading...