Crankshaft Repair of Daihatsu 5DC-17 | Save Crankshaft from Rejection RA Power Solutions has received enquiries from shipowners and operators of Daihatsu 5DC-17 engines worldwide regarding recurring crankshaft problems. One of the major issues reported is the development of ovality in crankpins and main journals after continuous engine operation. With five decades of experience in crankshaft repair of Daihatsu 5DC-17 , RA Power Solutions has developed specialized equipment and techniques to carry out onsite grinding and polishing of Daihatsu 5DC-17 crankshafts. This eliminates the need to remove the crankshaft from the engine block and transport it to an external workshop. Technical Specifications of Daihatsu 5DC-17 Crankshaft Common Crankshaft Problems in Daihatsu 5DC-17 Engines The Daihatsu 5DC-17 has a relatively small crankpin diameter of 145 mm and a bearing width of only 64 mm. These dimensions make onsite crankshaft grinding and polishing particularly challenging because of the limited working space between the crankshaft webs. Another important observation is the relatively low crankshaft hardness, generally ranging between 18 and 24 HRC. Due to continuous engine operation, wear and changes in crankpin and main journal geometry can develop over a period of approximately 3–5 years. RA Power Solutions has inspected several Daihatsu 5DC-17 crankshafts and observed excessive ovality, uneven wear and bearing contact marks. S. NO Crankshaft Details 1 Engine Make Daihatsu 2 Engine Model 5DC-17 3 Crankpin Diameter Standard 145mm 4 Crankpin Bearing Width 64mm Hardness Test Results of Daihatsu 5DC-17 Crankshaft Hardness testing is an important part of crankshaft inspection. Our technicians measure hardness at different positions on the crankpins and main journals to assess the condition of the material. The following readings were recorded at the free end and flywheel end of a Daihatsu 5DC-17 crankshaft. FREE END FLY WHEEL END Position HS HRC HB Position HS HRC HB 180* 34.1 20 223 180* 33 18 212 135* 35.1 21 229 135* 33.3 18 212 90* 32.6 18 212 90* 34.1 20 223 45* 32.8 18 212 45* 36.3 23 240 Top 33 18 212 Top 32.9 18 212 45* 34.1 20 223 45* 33.9 20 223 90* 37.0 24 245 90* 33 18 212 135* 37.3 24 245 135* 36.3 23 240 180* 33.6 20 224 180* 34.2 20 223 These readings help assess the hardness distribution across different crankshaft positions before deciding the appropriate grinding and polishing procedure. Why Is Onsite Crankshaft Grinding Difficult for Daihatsu 5DC-17? The small crankpin diameter and narrow bearing width create significant challenges for conventional portable grinding equipment. The limited clearance between the crankshaft webs makes it difficult to position and operate standard grinding machines. As a result, many conventional repair facilities recommend one of the following options: ● Replace the existing crankshaft with a new one. ● Remove the complete crankshaft from the engine block and transport it to a specialized workshop for grinding and polishing. Both options can result in substantial expenses and extended engine downtime. RA Power Solutions has developed specialized portable equipment and machining techniques to overcome these limitations. RA Power Solutions – Specialized Repair of Daihatsu 5DC-17 Crankshafts RA Power Solutions has successfully repaired more than 23 Daihatsu 5DC-17 crankshafts using its specialized onsite grinding and polishing equipment. Our major capabilities include: ● Onsite grinding and polishing of crankpins and main journals without removing the crankshaft from the engine block. ● Repair of crankpins in undersizes of 0.5 mm, 1.0 mm, 1.5 mm and 2.0 mm, depending on the condition and permissible machining limits. ● Precision measurement of crankpin diameter, taper and ovality. ● Hardness testing and MPI crack detection before machining. ● Supply of matching undersized bearings for Daihatsu 5DC-17 engines. ● Worldwide deployment of experienced technicians for emergency crankshaft repairs. Our technicians hold valid Indian CDC documents and can travel internationally to carry out repair work at ports, shipyards and other locations. Periodic Crankshaft Inspection and Polishing Is Recommended We strongly recommend inspecting and polishing Daihatsu 5DC-17 crankpins and main journals whenever engine bearings are replaced. Regular measurement of crankpin diameter, taper and ovality helps identify wear at an early stage. Periodic polishing also helps maintain the required journal surface finish and supports longer bearing service life. If excessive ovality or dimensional variation is detected, grinding to the next permissible undersize can restore the crankpin dimensions, provided the crankshaft material condition and manufacturer's limits allow it. Save Your Daihatsu 5DC-17 Crankshaft from Rejection RA Power Solutions has nearly five decades of experience in crankshaft grinding, polishing and repair. Having successfully repaired more than 23 Daihatsu 5DC-17 crankshafts, we have developed the necessary equipment and technical expertise to handle this challenging engine model. We also manufacture and supply undersized bearings to match the repaired crankshaft dimensions. Contact RA Power Solutions before deciding to replace or reject a damaged crankshaft. Our team can assess the condition and recommend a suitable repair solution to reduce downtime and repair costs. For more information, contact us at email: rajshahani@rapowersolutions.com Email: info@rapowersolutions.com Phone: +91 9582647131 Phone: +91 9810012383 Our YouTube channel: https://www.youtube.com/channel/UCxcP2Jc6DGFdpBokIcxVyBg