Table of Contents
Advertisement
YO-233-B2A Engine Maintenance Manual
TEO-540-A1A Engine Maintenance Manual
Problem
High oil consumption
(Cont.)
High cylinder
temperature
High oil temperature
© 2021 Avco Corporation. All Rights Reserved
February 2021
Table 1 (Cont.)
Fault Isolation Guide
Cause
Crankcase ventilation
system
Oil level too high
Spark plugs have
incorrect heat rating
Cooling baffles and
seals are missing,
broken, or incorrectly
installed
Engine is operating
excessively lean
Mixture control is
incorrectly installed
Defective oil
temperature gage
Oil level is too low
Corrective Action
Examine the plumbing and
positive breather tube.
Do not fill above the maximum oil
sump capacity.
Install approved spark plugs.
Verify that all baffles are installed
correctly and none are broken.
Replace as necessary.
NOTICE: Never modify,
relocate, or eliminate any cooling
baffles.
1. Refer to Appendix C in the
YO-233-B2A Engine
Installation and Operation
Manual for minimum fuel
flows for various power
settings and never lean below
minimum fuel flows.
2. Examine the combustion
chamber for carbon deposits.
The absence of carbon
deposits is evidence of
operating the engine too lean.
Make sure that full travel of the
cockpit mixture control lever is
calibrated to the correct FULL
RICH and IDLE CUT-OFF stops.
1. Install the master temperature
gage and operate the engine to
compare gages.
2. Replace the faulty gage if
necessary.
Complete the check of the oil level
at regular intervals. Keep oil at the
specified level.
Ref.
12-10
74-20
OHM
IOM
Appendix
C
OHM
12-10
12-30
Page 83
Advertisement
Table of Contents
