TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Note. Use caution when removing main bearing cap so that lower main sleeve bearing half does not drop out accidentally. Sleeve bearing halves can be easily damaged. 1. Install crankcase spreading tool -5120-575-1767 (A) in crankcase assembly midway between two main bearing caps. Tighten spreading tool just enough to release pressure of crankcase from ends of main bearing caps. 2. Install mechanical puller - 5120-310-4668 (B) in mechanical adapter - 5120-837-5091. Install puller adapter into threaded bole provided in No. 1 main bearing cap (C). 3. Gently tap the main bearing cap free of the crankcase using the slide hammer on puller. Remove main bearing cap and lower main sleeve bearing half and separate tbe bearing half from the cap. Mark sleeve bearing half with its respective location, using a grease pencil, for identification; e, g., “ 1 cap, ” “2 cap, ” etc. 4. Remove remaining bearing caps (D) (Nos. 2 through 7) and tbe lower sleeve bearing halves in similar manner using puller - 5120-310-4668 and positioning the spreading tool - 5120-575-7767 between bearing caps as necessary. Remove sleeve bearings from bearing caps. Figure 5-174. Removing main bearing cap using crankcase spreading tool-5120-575-7767, mechanical adapter-5120-837-5091, and mechanical puller-5120-310-4668. 5-101