Piper 25-235/260 Pawnee Exhaust System Itemized Parts List

Item Part # Description Condition
01 753-753 MUFFLER OVERHAUL
02 60350-02 STACK - LH - MODEL D - (6") - 2 BOLT FLANGE OVERHAUL
02 64039-002 STACK - LH - (5.5") - 2 BOLF FLANGE OVERHAUL
03 60350-03 STACK - RH - MODEL D - (6") - 2 BOLT FLANGE OVERHAUL
03 64039-003 STACK - RH - (5.5") - 2 BOLT FLANGE OVERHAUL
04 64170-00 TAILPIPE OVERHAUL
05 64074-00 SHROUD - MUFFLER - (SUPERCEEDS TO 64879) OVERHAUL
05 64451-00 SHROUD - MUFFLER - (NOT AVAILABLE) N/A
05 64879-00 SHROUD - MUFFLER OVERHAUL
06 64167-07 CARB HEAT - TOP N/A
06 64439-00 CARB HEAT - TOP N/A
06 64439-04 CARB HEAT - TOP N/A
06 64439-08 CARB HEAT - TOP N/A
06 64439-10 CARB HEAT - TOP N/A
07 64167-03 CARB HEAT - BOTTOM N/A
07 64439-05 CARB HEAT - BOTTOM N/A
08 14235-008 CLAMP - MUFFLER PIN - 2.5" NEW
09 64092-00 CLAMP - TAILPIPE N/A

AD 67-14-07 for 25-235 s/n 25-2000-25-4171 50 hour inspection of entire exhaust system & internal inspection of muffler. AD does not apply when new muffler & exhaust stack clamps are installed.

"D" model has wing tanks Taller stacks go on "D" model.

Check Tailpipe for thinning.

Check under shroud take off can for cracking and heat distortion.

Mufflers have internal baffles and they must be intact to be airworthy.

Check stacks for cracking and heat distortion.