Piper SARATOGA PA-32-301 Maintenance Manual page 552

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
DISTRIBUTION.
OIL COOLER.
INSTALLATION OF OIL COOLER. (PA-32-301.)
1. 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.
2. If a pipe thread fitting is used, it should be installed only far enough to seal with sealing compound.
3. Apply Lubon No. 404 to all male pipe thread fittings; do not allow sealant to enter the system.
4. If fitting cannot be positioned correctly using a torque of 9 to 15 foot-pounds, another fitting should
be used.
5. When attaching lines to the cooler, a backup wrench should be used.
6. After installation, inspect the cooler for distorted end cups.
7. Run-up engine. After run-up, check for oil leaks.
INSTALLATION OF OIL COOLER. (PA-32-301T.)
1. The fittings on this installation utilize O-ring gaskets. It is recommended that the O-rings be replaced
whenever a connection is opened.
2. When installing fittings in the oil cooler, care should be used to prevent excessive torque being applied
to the cooler. Allowable torque for 3/8 in fittings is 9 to 15 foot pounds. When a rectangular fitting boss is
provided, a backup wrench should be used employing a scissor motion so that no load is transmitted to the
cooler.
3. Use care when installing flexible hose assemblies. (Refer to Chapter 20. Installation of Flexible Hose
Assemblies.)
4. When tightening nuts on flexible hose assemblies with flared fittings, first tighten the nut finger-tight
and then tighten with a smooth jawed wrench to the torque specified in Chart 9101.
5. After installation, inspect the cooler for distorted end cups.
6. Run-up engine. After run-up, check for oil leaks. During leak testing any one nut may be tightened an
additional one-sixth turn maximum. If the fitting still leaks, the fluid line shall be removed and replaced.
79-21-02
Page 79-01
Revised: August 23, 1982
2L21