KIT GP 3965347 - Caterpillar

27. Place the bridge dowel plugs in the plug bore and use a 4C-8540 Driver (part of 9U-5100 Cylinder Head Repair Tool Group) to drive the plugs into the casting. 28. Using the 4C-8540 Driver and the 8T-2673 Stop Sleeve (part of 9U-5100 Cylinder Head Repair Tool Group) drive the bridge dowels into the bridge dowel plugs. Cool the valve guides before installation. 29. Place the valve guide into the valve guide bore and use the 8T-2676 Driver (part of 9U-5100 Cylinder Head Repair Tool Group) to drive the valve insert into the cylinder head casting. 30. Inspection: Using the 9U-6401 Valve Guide Gauge, measure the internal diameter of the valve guides. If the valve guide internal diameter has been reduced upon installation it will have to be removed and replaced, or honed to the proper diameter. 31. Inspection: Using the 130-2534 Bridge Dowel Gauge, measure the external diameter and the height of the bridge dowel.32. Place the cylinder head in the press on the upper side of the cylinder head. Before installing the valve seat inserts, ensure that the insert bore is thoroughly clean and that there are no sharp edges remaining from the surface grinding procedure. 33. Place the intake valve insert into the valve insert bore and press into place using the 8T-2674 Driver (part of 9U-5100 Cylinder Head Repair Tool Group). 34. Wipe clean the exhaust valve insert bore with a rag and prime the surface with 6V-1541 Quick Cure Primer. Apply 4C-9507 Retaining Compound to the insert bore along the sealing surfaces. 35. Place the exhaust valve insert in the insert bore and press into the cylinder head casting using the 8T-2674 Driver (part of 9U-5100 Cylinder Head Repair Tool Group).
When installing water cooled exhaust valve inserts do not cool or strike the inserts in any fashion. This action will cause the inserts to crack allowing coolant to enter the combustion chamber. The valve seat inserts should be inserted with a hydraulic press or similar tool.
If the valve seat inserts are to be reused they will need to be lightly ground with the 4C-4706 Grinder. When grinding the valve inserts do not remove any more material that necessary. 36. Inspection: Using the 147-2285 Valve Gauge Group measure the valve to insert interference angle. The valve seat insert angle is 30.75 degrees 0.25 degrees. The valve to valve insert interface should be line contact around the outside edge of the valve and valve seat.37. Inspection: Measure the valve lip thickness using the 6V-7059 Micrometer and the 6V-2034 Adapter. The minimum valve lip thickness is 4.80 mm (0.190 in). The angle of the valve seating surface is 30.25 degrees 0.10 degrees. 38. Inspection: Measure the valve recession using the valve projection tooling. The maximum valve recession of the intake valves is 2.00 mm (0.079 in). The maximum recession of the water cooled exhaust valve is 7.00 mm (0.276 in). Maximum valve projection is 0.5 mm (0.02 in). If the valve projection exceeds the