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INSTALL  COMBINING TRANSMISSION OIL COOLER FAN AND SHAFT 145D5319-3 OR -5 (Continued) - TM-55-1520-240-23-5_631
INSTALL  COMBINING TRANSMISSION OIL COOLER FAN AND SHAFT 145D5319-3 OR -5 (Continued) - TM-55-1520-240-23-5_633

TM-55-1520-240-23-5 CH-47D Heilcopter Manual
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TM 55-1520-240-23-5 6-186 INSTALL COMBINING TRANSMISSION OIL COOLER FAN AND SHAFT 145D5319-3 OR -5     (Continued) 6-186 10. Install fan (2) as follows: a. Coat four studs (5) with oil (E253, E254, or E254.1). b. Lower the fan onto the studs.  Lightly tap the fan to seat it on oil cooler (6).  Use a rawhide mallet. WARNING Do not use mounting nuts to jack the fan down against the oil cooler.  This pressure will load the bearing if there is too much grease. c. If the fan cannot be seated by tapping, remove it, being careful to hold shaft (10) in place at the transmission end to prevent the shaft from being removed with the fan.  Wipe the grease from the first 0.5 inch  of the cavity in the splined shaft of the fan. Repeat steps a thru c to reinstall the fan. d. Check for gaps under flange of the fan as in step 6.  Compare with gaps noted in step 6. If any gap has increased, remove the fan. Reinstall the fan (steps a thru c). e. Again, check and compare gaps as in step d.  If any gap is still greater than measured in step 6, remove the fan and shaft (10). Repeat installation from step 3. f. When the fan is seated, install washers (26), bracket (27) (at one stud only), and nuts (7) on studs (5).  Torque the nuts (7) to  100-140 inch-pounds. 6-610 Change 1







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