Piper Arrow IV Turbo Maintenance Manual page 84

Do not introduce any trade additive to the basic lubricant unless
recommended by the engine manufacturer.
FILLING OIL SUMP.
The oil sump should normally be filled with oil to the mark on the engine dipstick. The quantity of oil
required for the engines may be found in Chapter 6. The specified grade of oil may be found in the Lubrication
Chart, or on the access door. To service the engine with oil, open the access door and remove the oil filler cap.
DRAINING OIL SUMP.
To drain the oil sump, provide a suitable container with a minimum capacity of that required to fill the
sump. Remove the engine cowl and on PA-28 RT-201 airplanes open the oil drain valve by pushing the center
of the drain up and turning counterclockwise. This will hold the drain in the open position. On PA-28RT-201T
airplanes remove the fuel drain probe from the clip on the right rear engine baffle. Install suitable hose on
probe and insert in quick drain valve located on the underside of the engine. It is recommended the engine be
warmed to operating temperature to insure complete draining of the old oil.
OIL FILTER. (Full Flow)
1. The oil filter element should be replaced after each 50-hours of engine operation; this is accomplished
by removing the lockwire from the bolthead at the end of the filter, loosening the bolt, and removing the filter
assembly from the adapter.
2. Before discarding the filter element, remove the outer perforated paper cover, and using a sharp knife,
cut through the folds of the element at both ends, close to the metal caps. Then, carefully unfold the pleated
element and examine the material trapped in the filter for evidence of internal engine damage such as chips or
particles from bearings. In new or newly overhauled engines, some small particle of metallic shavings might
be found; these are generally of no consequence and should not be confused with particles produced by
impacting, abrasion or pressure. Evidence of internal engine damage found in the oil filter justifies further
examination to determine the cause.
3. On Continental engines proceed as follows:
Ascertain that oil filter complies with specifications of the latest
revision of Continental Aircraft Engine Service Bulletin M75-7.
A. Before installing the new filter, lubricate the gasket on the filter with engine oil, then install.
Tighten slightly more than hand tight or 3/4 to 1 full turn after gasket makes contact. Do not over
torque.
B. Run the engine and check for oil leaks; then install lockwire between nut on filter and oil filter
adapter assembly.
PIPER AIRCRAFT
PA-28RT-201 / 201T
*MAINTENANCE MANUAL
—CAUTION—
—NOTE—
1D12
12-10-10
Page 12-05
Revised: July 13, 1983