Preventative Maintenance & Troubleshooting Chapter #13.
-
Upload
stephanie-mcdonald -
Category
Documents
-
view
228 -
download
0
Transcript of Preventative Maintenance & Troubleshooting Chapter #13.
![Page 1: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/1.jpg)
Preventative Maintenance & Troubleshooting
Chapter #13
![Page 2: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/2.jpg)
Preventative maintenance
• Engine cleaning– Remove shroud– Dirt and oil will insulate crankcase and prevent
heat transfer
![Page 3: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/3.jpg)
Checking Engine Oil Level and Condition
• Do not overfill• If level drops at an excess rate
Find out why• Change every 10-50 hrs., check service info
![Page 4: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/4.jpg)
Changing OilUse evacuator
Drain oil, Change filter (if applicable) oiling O- ring, refill, run engine for a minute, recheck level… easy…
![Page 5: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/5.jpg)
• Lubricating Cables and Linkage
• $7.00 TOOL
![Page 6: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/6.jpg)
Material covered in a previous chapter
• Spark Plug Service
![Page 7: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/7.jpg)
Air Cleaner Service
• Paper unit – replace• Foam unit -– Wash unit in liquid detergent– Wrap in cloth and squeeze dry– Saturate in clean oil– Squeeze out excess oil
![Page 8: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/8.jpg)
Crankcase Breather Service
• Remove, inspect, & clean• Replaced damaged gasket
– If needed
![Page 9: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/9.jpg)
Muffler
• 1/3 heat transferred by exhaust• Replace if needed• Do not modify
![Page 10: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/10.jpg)
Battery Service
• Clean terminal and cable ends• Check fluid level – add distilled water (if needed)
• Check capacity/condition/life
![Page 11: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/11.jpg)
Pressurized Liquid Cooling System Service
50/50 – coolant/water(distilled)Change every 2-3 years, check service infoCheck strength with a hydrometer
![Page 12: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/12.jpg)
Storing engine
• Thorough cleaning• Fog engine or put several teaspoons of oil (Marvels) in
cylinder• Fuel – stabilizer or drain, run dry of fuel• Change oil• Throttle off & choke closed• Clean or replace plug• Clean air filter• Outboard make sure all water is removed from engine or it
may freeze and crack casting• Change gear lube
![Page 13: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/13.jpg)
Check Easiest Things First
• Proper carburetion• Proper ignition• Adequate lubrication• Sufficient cooling• Proper Compression – 30-45 psi for starting &
min. 90 psi for efficient operation and sufficient power
![Page 14: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/14.jpg)
Check RPM
• Mechanical tachometer• Digital tachometer• Optical
![Page 15: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/15.jpg)
Testing Compression
• Engine must be warm• Open choke and throttle wide open• Remove air cleaner• Remove plug and insert compression gauge• Crank engine as fast as possible, a minimum of
four revolutions
![Page 16: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/16.jpg)
Leak-down Test• Warm engine• Remove plug, piston TDC compression stroke, both valves
closed• Install holding fixture, prevent crank from turning• Install adapted in plug hole• Shop air at least 90lbs• Adjust regulator gauge to 80lbs• Cylinder pressure gauge reads 60lbs or above = OK• Listening for sound of escape air can pinpoint problem area
![Page 17: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/17.jpg)
Service Information
![Page 18: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/18.jpg)
Engine Identification
• Vertical or Horizontal crankshaft• # cylinders• Model #• Serial #• Manual or electric start• Carb type
![Page 19: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/19.jpg)
Engine Troubleshooting Chart
• Textbook pages 259 – 261– Tables 13-31thru 13-33
![Page 20: Preventative Maintenance & Troubleshooting Chapter #13.](https://reader035.fdocuments.us/reader035/viewer/2022062216/56649dd05503460f94ac54ea/html5/thumbnails/20.jpg)
Gateway Community College, 2014 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. This workforce solution was funded by a grant awarded by the U.S. Department of Labor’s Employment and Training Administration. The solution was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership.