UM1004 | MRO-00011 05/21 Rev.0 DCO-016875
8
Joint A
Joint B
Figure 4: J-28348-64 Axial Isolator External Joints Joint C
Joint D Joint E
Joint F
Figure 5: J-28348-64 Axial Isolator Internal Joints
9.0
FIELD CHECKS AND MAINTENANCE
9.1
Service Intervals
Maintenance and replacement of key wear items is critical to maintaining performance of the Isolator. Recommended
service intervals for the Isolator components are shown in Table 8. See section 11.4 for Sealing Sub Assembly (J-28460-
39) repair and maintenance.
Table 6: Thread Lubricants & Locker/Sealant
Joint
Lubricant/Thread Locker/Thread Sealant
A
KOPR KOTE
B
KOPR KOTE
C
KOPR KOTE
D
LOCTITE 263
E
LOCTITE 243
F
LOCTITE 243
Table 7: Installation Torque
Joint
Installation Torque
A
350 ft-lb*
B
350 ft-lb*
C
350 ft-lb*
D
Hand Tight
E
Hand Tight
F
100 ft-lb
*Installation torque is intended to be typical installation torque used on entire MWD Tool. Install using established best practices.
Table 8: Service Intervals
Service Level
Frequency
Section
Page
Level I
Every run
11.1.1
14
Level II
Upon Elastomer Replacement
based on OAL
11.1.2
14
Level I Service should be performed regularly and incorporated into a regular maintenance schedule.
*Level II Service should be performed as needed based on inspection criteria in Section 9.2.