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2 - ROCKER SHAFT BOLTS
4. Remove rocker arms and shaft (1). See Engine/Cylinder Head/ROCKER ARM, Valve - Removal.
5. Rotate engine until the piston in the cylinder bore requiring spring removal is at TDC.
Fig. 100: VALVE SPRING - REMOVE/INSTALL (HEAD ON)
Courtesy of CHRYSLER LLC
1 - SPECIAL TOOL 8453
2 - BOLTS - SPECIAL TOOL ATTACHING
3 - AIR SUPPLY HOSE ADAPTER
6. Install Special Tool 8453 (1) to the cylinder head. Tighten the attaching bolts to 23 N.m (200 in. lbs.).
7. Install a spark plug adapter (3) in the spark plug hole. Connect air hose that can supply 620.5-689 kPa
(90-100 psi) of air pressure to adapter. This is to hold valves in place while servicing components.
8. Locate the forcing screw and spring retainer adapter assembly over the spring requiring removal.
9. Slowly turn the forcing screw clockwise (compressing the valve spring) until the valve keepers can be
removed.
10. Turn forcing screw counterclockwise to relieve spring tension. Remove retainer and valve spring.
11. Repeat procedure for each cylinder requiring valve spring removal.
Inspection
INSPECTION
viernes, 1 de octubre de 2021 05:18:30 p. m.
2010 Jeep Wrangler Sport
2010 ENGINE 3.8L - Service Information - Wrangler
Page 77
© 2011 Mitchell Repair Information Company, LLC.
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