THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 1
Jun 1/03
5F1
79-20-00
DISTRIBUTION
Oil Cooler
A. When installing fittings in the oil coolers, care should be used to prevent excessive torque being
applied to the cooler. When a rectangular fitting boss is provided, backup wrench should be used,
employing a scissor motion, so that no load is transmitted to the cooler. When the oil cooler has a
round fitting boss. care should be taken not to permit excessive torque on the fittings.
B. If a pipe thread fitting is used, it should be installed only far enough to seal with sealing compound.
C. Apply Lubon No. 404 to all male pipe thread fittings; do not allow sealant to enter the system.
D. If fitting cannot be positioned correctly using a torque of 10 to 15 foot-pounds, another fitting should
be used.
E. When attaching lines to the cooler, a backup wrench should be used.
F. After installation, inspect the cooler for distorted end cups.
G. Run-up engine. After run-up, check for oil leaks.
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