Piper Arrow IV Turbo Maintenance Manual page 679

3. No lubrication is required on the starting motor except at the time of overhaul. Then lubricate the
entire shaft under Bendix Drive, fill grooves in armature shaft at drive end and pack gear box with 1.3 to 2.0
ounces of Lithium Soap Base Grease #1925 Molytex "O" or equivalent.
4. The starting motor should be operated for a few seconds with the ignition switch off to make sure that
the pinion engages properly and that it turns freely without binding or excessive noise. Then the engine should
be started two or three times to see that the pinion disengages properly when the engine is turned off.
5. Check aluminum cables used in the battery circuit for loose or corroded terminals or other
unsatisfactory conditions.
Should an unsatisfactory condition exist, Piper recommends that
the complete cable assembly be replaced. Should this not be
practical, it is permissible to replace the aluminum cable
assembly with a copper cable assembly using a copper cable two
sizes smaller (AL-1 aluminum cable replaced with AN-3 copper
cable). Refer to latest revision AC43:13-1A for installation
practices.
OVERHAUL OF STARTING MOTOR.
If during the above inspection any indication of starting motor difficulty is noted, the starting motor should
be removed from the engine for cleaning and repair.
REMOVAL OF STARTING MOTOR.
To remove the starting motor from the engine, first disconnect the ground cable from the battery post to
prevent short circuiting. Disconnect the lead from the starting motor terminal, then take out the mounting bolts.
The motor can then be lifted off and taken to the bench for overhaul.
DISASSEMBLY OF STARTING MOTOR.
1. Remove the frame screws from the commutator end head and pull end head and armature from frame.
Lift the brushes and lock in elevated position with brush springs. Use a puller to remove the end head from the
armature. Use a special bearing puller to remove the sealed ball bearing from the armature shaft.
2. Remove the frame screws that secure the gear housing to the frame. Remove bolts and nuts holding the
gear housing to the pinion housing and separate the two units. Pull Bendix shaft from pinion housing. Do not
lose the steel spacer that is located on the pinion end of the shaft. Remove reduction gear, woodruff key and
steel spacer from shaft.
3. Turn the Bendix pinion until it locks in the extended position. Locate "spiral" pin and use a punch to
remove. Slide drive assembly off the shaft. Do not attempt to disassemble the drive and do not dip it in
cleaning solvent.
4. To remove the roller bearings from the gear housing, use an arbor press and the correct bearing arbor.
DO NOT HAMMER OUT. Each part should be cleaned and inspected for excessive wear or damage. Bearings
should be checked for proper clearance and evidence of roughness or galling. Oil and dirt should be removed
from insulation and the condition of the insulation checked.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
—NOTE—
3G16
80-10-04
Page 80-05
Revised: July 24, 1981