5-101.bk Page 4 Friday, March 17, 2006 11:05 AM
200 ENGINE ASSEMBLY Pipe Plug Replacement
Any rust around a pipe plug is an indication of a leak and the plug should be replaced. REMOVAL 1. Using an appropriate wrench, remove the plug. 2. Clean the threads in the block by running a tap into the hole, just far enough to remove any rust on the threads without expanding the diameter of the hole. Use compressed air to remove any chips from the block.
It is best to replace a leaking pipe plug. However, if reusing the same plug, clean thoroughly, paying special attention to the threads.
Figure 6-2 — Cylinder Block Cup Plugs
INSTALLATION 1. After cleaning the plug hole, apply a thin coat of Loctite® 277 to both the surface of the hole and the outer edge of the plug. 2. Using a proper driver, align the plug in the hole and drive it inward until the outer lip of the plug is flush with the cylinder block. Refer to Figure 6-3.
3. Using a wire wheel, clean the threads of the plug. Visually check the thread surfaces for burrs or damage. Then clean and check the remaining surfaces.
New plugs already have a sealer applied to the threads. Applying a Teflon sealer to the threads will not adversely affect the precoating. INSTALLATION Apply appropriate Teflon thread sealant to the threads and install the plug. Torque to specification. Refer to Torque Chart in the SPECIFICATIONS section of this manual.
When checking or assembling engine components, refer to the Fits and Limits Chart and Torque Chart in the SPECIFICATIONS section of this manual for specified dimensions and torque settings. Figure 6-3 — Cylinder Block Cup Plug Installation
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