LYCOMING
Reciprocating Engine
TROUBLE
SHOOTING
GUIDE
independencedayReprint 2006
SSP-475
652 Oliver Street
Williamsport, PA 17701 U.S.A.
after effect570/323-6181
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INTRODUCTION
TROUBLE-SHOOTING
1.Trouble-shooting is the step-by-step procedure ud to determine the cau for a given problem and then lecting the best
and quickest way to solve that problem. While the u of turbochargers and automatic controllers has complicated the trouble-shooting procedures, always start by discussing the problem with the pilot and the facility management. They will assist you in narrowing the problem to as few possibilities as possible. In the ca of twin engine aircraft, make sure you are working on the correct engine. After a thorough discussion and verbal analysis of the problem, you are ready to go to work. If you are an experienced mechanic, you may be able to automatically eliminate some of the probable caus. If you are new on the job, you will have to go through all of the probable caus. The important thing to remember is to always start with the simple and inexpensive things first, and then work toward the more complicated, time consuming, and expensive things later.考研英语学习方法
mba是什么2.After you have received all possible information from the pilot and the facility management, a quick obrvation of the
external condition of the engine may give you an indication of the problem. Some areas to look at are the intake and exhaust pipes for leaks, the ignition harness, breather, and the engine compartment for excessive oil stains, gas stains or exhaust stains. More information may be gained rather quickly by doing a compression check to locate any low compression cylinders. Do a boroscope inspection to determine the condition of the combustion chamber. Some information that may be obtained is: the prence of excessive carbon deposits may indicate high oil consumption; the lack of carbon deposits may indicate continuous lean engine operation or detonation; and scratched or scored cylinder walls may indicate broken rings.
More information may be compiled by removing the spark plugs to inspect the combustion chamber.
NOTE
猴子的英文Be sure to keep track of which piston pin plugs came out of which cylinder. During reasmbly the piston pin
plugs must be matched up with the cylinder they came out of.
Another good trouble-shooting tool is the u of spectrometric oil analysis. To be effective the engine must be in the analysis program for an extended period of time to develop a uful history of periodic samples of oil that were analyzed. The program must be carried out by experienced and reputable people in the oil analysis field.open marriage
3.The following list of problems, caus, and solutions was lected becau we believe it reprents the more common and
recurring problems encountered by mechanics when doing trouble-shooting. It should be noted that the list is general in nature, and does apply to both normally aspirated and turbocharged engines. The quence in which the lists are arranged is not necessarily the exact step-by-step procedure to u, but should be ud as a guide to determine all of the possible caus and solutions to a problem. Always keep in mind to do the simple and inexpensive things first, then proceed with the more complicated and expensive things later.
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CONTENTS
Page No.
1.1 - 3
2.3 - 4
3.ENGINE WILL NOT IDLE UNLESS BOOST PUMP 4 - 5
laboratories4.ENGINE WILL NOT IDLE UNLESS BOOST PUMP IS OFF (5)
5.POOR 5 - 6
6.HIGH FUEL FLOW (6)
7.LOW .decline什么意思
................................6 - 7
8.ENGINE WILL NOT TURN .7 - 8
9.8 - 9
10.FAILURE OF ENGINE TO DEVELOP 9 - 11
11.LOSS OF POWER GOING TO ALTITUDE (12)
12.CANNOT REACH SPECIFIED 13 - 15
13.LOW 15 - 16
14.HIGH 16 - 17
15.HIGH CYLINDER 17 - 18
16.SPLIT IN MANIFOLD PRESSURE (TWIN ENGINE)....................................................................................................18 - 19
17.HIGH OIL TEMPERATURE (19)
18.HIGH MANIFOLD PRESSURE AT IDLE (19)
19.HIGH OIL PRESSURE (20)
20.MANIFOLD PRESSURE FLUCTUATES (20)
APPENDIX I
TROUBLE-SHOOTING THE BENDIX RSA FUEL INJECTOR (21)
make the change
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