3. No lubrication is required on starting motor except at time of overhaul. Then lubricate 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. Operate starter motor for a few seconds with ignition switch off to make sure that pinion engages
properly and that starter turns freely without binding or excessive noise. Then start engine two or three
times to ensure that pinion disengages properly when engine is turned off.
OVERHAUL OF STARTING MOTOR
If during the above inspection any indication of starting motor difficulty is noted, remove starter motor
from engine for cleaning and repair.
REMOVAL OF STARTING MOTOR.
To remove the starting motor from the engine, proceed as follows:
1. Disconnect ground cable from battery post to prevent short circuiting.
2. Disconnect lead from starting motor terminal.
3. Take out mounting bolts.
4. Lift motor off engine.
DISASSEMBLY OF STARTING MOTOR
1 . Remove frame screws from commutator end head and pull end head and armature from frame. Lift
brushes and lock in elevated position with brush springs. Use a puller to remove end head from
armature. Use a special bearing puller to remove sealed ball bearing from armature shaft.
2. Remove frame screws securing gear housing to frame. Remove bolts and nuts holding gearhousing to
pinion housing and separate two units. Pull Bendix shaft from pinion housing. Do not lose steel spacer
located on pinion end of shaft. Remove reduction gear, woodruff key and steel spacer from shaft.
3. Turn Bendix pinion until it locks in extended position. Locate spiral pin and use a punch to remove.
Slide drive assembly off shaft. Do not attempt to disassemble drive and do not dip it in cleaning
solvent.
4. Remove roller bearings from gear housing using an arbor press and correct bearing arbor. DO NOT
HAMMER OUT. Clean each part and inspect for excessive wear or damage. Check bearings for
proper clearance and evidence of roughness or galling. Remove oil and dirt from insulation and check
condition of the insulation.
BRUSHES
Check brushes to see that they slide freely in their holders and make full contact on commutator. If worn
to one quarter inch or Less, they should be replaced.
80 - 12 - 00
Page 80 - 05
Reissued: August 1, 1986
2L1
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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