TM 10-4320-344-244.4.17 CamshaftMaintenance,Models609-CandUS636HCCD-1. (Continued)d.e .f .g .h.i .Inspect camshaft assembly (2) for scored or worn cams and bearing surfaces andworn thrust surfaces.Inspect camshaft gear (6) for burrs, chips, cracks, damaged or missing teeth,or damage.Measure diameter of camshaft bearing journal at drive end of camshaft assembly(2). Record measurement.Figure 4-32. Camshaft Inspection, Models 609-C and US636HCCD-1.Using micrometer, measure inside diameter of camshaft bearing sleeve (Figure4-32, 1) in crankcase (2) at points "1" and "2" in planes "a" and "b" as shownin Figure 4-32. Record measurement.If camshaft bearing sleeve (1) measurement is not within 1.8890 - 1.8911inches (47.980 - 48.034 mm) refer to paragraph 4.4.22 and replace camshaftbearing sleeve (1).Subtract measurement taken in step f from measurement taken in step g. Ifresultant value is greater than or equal to 0.0394 inches (1.000 mm), replacecamshaft assembly (Figure 4-31, 2) and refer to paragraph 4.4.22 and replacecamshaft bearing-sleeve (Figure 4-32, 1).4.4.17.3 Installation.To avoid damage to equipment, ensure valve tappets are installed in theiroriginal cylinders block holes.a .Lightly coat valve tappets (Figure 4-31, 1) with oil, remove tags, and insertvalve tappets (1) into-their respective holes in crankcase (3). Push valvetappets (1) all the way in, so they will clear camshaft assembly (2).b.Install thrust washer (5) on camshaft assembly (2).c .Install pin (4) in camshaft assembly (2).4-62
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