ENGINE MAINTENANCE. (cont) - TM-5-3805-261-34

ENGINE MAINTENANCE. (cont) - TM-5-3805-261-34_837

ENGINE MAINTENANCE. (cont) - TM-5-3805-261-34_839

TM-5-3805-261-34 Grader Heavy Road Motorized (Caterpillar Model 130 G) Manual
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TM 5-3805-261-34 ENGINE MAINTENANCE. (cont) 13-3. Cylinder Head Assembly Overhaul. (Sheet 3 of 6) CLEANING Clean all parts. Refer to Chapter 2. INSPECTION/REPAIR 1. Position cylinder head on its intake port surface. 2. Insert gage or equivalent through fuel injection nozzle hole alining one end of gage with straight edge placed across combustion surface and measure thickness (Figure 13-6). Replace if gage extends above combustion surface or head thickness is less than 3.774 inches. Repeat measurement at all nozzle holes (Figure 13-7). 3. Using a 24 inch straight edge and feeler gage, check flatness of combustion surface. Measure surface along each edge and both diagonals indicated as points "A" (Figure 13-8). If more than 0.006 inch from flat, discard and replace head. If less than 0.006 inch from flat, refer to step 11 for machining instructions to correct warpage. Check areas between valve ports shown as points "B" must be 0.003 inch or flatter. Figure 13-6. Figure 13-7. Figure 13-8. Go to Sheet 4 13-12

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