Piper Lance II - Troubleshooting

LANCE II SERVICE MANUAL
10-49. TROUBLESHOOTING.
TABLE X-IX. TACHOMETER
Trouble Cause
Remedy
No reading on indica-
tor, either permanent
or intermittent.
Broken shaft.
Replace
instrument.
Angle
drive
failure
(engine
or instrument)
Loose
cable
connections.
Replace angle drive(s).
Tighten
cable.
Pointer oscillates
excessively.
Rough spot on, or
sharp
bend in
shaft.
Repair or replace.
Excessive friction in
instrument.
Replace instrument.
Indicator changes in
climb.
Pointer goes all the
way to stop, more
noticeable in cold
weather.
Pointer
jumps at
idle.
Tachometer
cable
breaks.
Excessive clearance in
speed cup.
Excessive lubricant in
instruments.
Speed
cup hitting
ro-
tating magnet.
Cable bent
too sharply.
Replace
instrument.
Replace
instruments.
Replace instrument.
Reroute cable.
10-50. REMOVAL
AND REPLACEMENT.
Refer to Paragraph
10-76 of this section.
10-51. ENGINE
OIL PRESSURE
GAUGE.
10-52.GENERAL.
The oil pressure gauge
is mounted in the cluster on the
instrument
panel.
This gauge will
indicate the amount
of oil pressure
available at the
pressurized
engine
oil passage.
Issued: 1/3/78
INSTRUMENTS
2E24