Some cam tensioners on recent Harleys have been reported to be defective.
A Dyna Wide Glide is a motorcycle model manufactured by Harley-Davidson, and a cam tensioner is a part inside an engine that helps synchronize the operation of the cam shaft. Cam shafts ultimately control how much gasoline and how much exhaust will leave any engine cylinder during a combustion cycle. Harley-Davidson owners and dealers have reported numerous problems with the cam tensioners in their current engine which is called a "Twin Cam." All recent Dyna Wide Glides are equipped with Twin Cam engines.
Instructions
1. Prepare the engine for cam compartment service according to the instructions in your service manual. Depending on the skill of the mechanic and the current condition of the engine this may, but not necessarily will, require removal of the breather assembly, rocker arm support plate and push rods.
2. Remove the 10 Allen head socket screws that fasten the cam cover to the engine using an Allen wrench. Remove and discard the cam cover gasket.
3. Remove the rear cam sprocket bolt and flat washer from the rear cam sprocket using an adjustable wrench.
4. Remove the crank sprocket bolt and flat washer from the crank sprocket with an adjustable wrench.
5. Place the cup of a cam chain tensioner unloader (Harley part number HD-42313) over the cam tensioner coil spring. Turn the tool counterclockwise until the hole in the tensioner aligns with the hole in the cam support plate.
6. Insert a cam chain tensioner unloader support pin (included with the cam chain tensioner unloader) through the holes in the aligned holes in the tensioner and the cam support plate.
7. Insert a seal remover between the inside of the cam sprocket and the support plate. Carefully pry off the cam sprocket, primary cam chain and crank sprocket
8. Remove the rear cam sprocket spacer from the rear camshaft
9. Remove the cam chain guide by squeezing the tabs with your fingers. Remove the chain.
10. Loosen the six cam support plate screws with an adjustable wrench. Remove the cam support plate.
11. Place the cup of a cam chain tensioner unloader over the secondary cam tensioner coil spring and turn the tool counterclockwise again and pin the secondary cam tensioner in place.
12. Remove the four Torx screws that hold the cam bearing retaining plate in place using a Torx driver.
13. Using a flat-head screw driver to carefully ease the tension, remove first the rear and then the primary cam chain tensioners.
14. Place the new cam tensioners in place. Replace the cam bearing retaining plate using a Torx driver.
15. Remove the cam chain tensioner unloader support pin from the rear cam tensioner. Remove the cam chain tensioner unloader from the rear cam tensioner.
16. Replace the cam support plate using an adjustable wrench. Replace the cam chain guide. Replace the rear cam sprocket spacer and the rear cam sprocket.
17.Replace the cam sprocket, primary cam chain and crank sprocket. Remove the cam chain tensioner unloader support pin from the primary cam tensioner. Remove the cam chain tensioner unloader from the primary cam tensioner.
18. Replace the rear cam sprocket bolt and flat washer and the crank sprocket bolt and flat washer using an adjustable wrench.
19. Install a new cam cover gasket on the cam cover. Replace the cam cover using an Allen wrench.
Tags: chain tensioner, chain tensioner unloader, tensioner unloader, support plate, rear sprocket
