Yanmar SD40, SD40-4T, SD50, SD50-4T Sail Drive Unit Service Manual

Description

• Model List:
  • SD40, SD40-4T, SD50, SD50-4T Sail Drive Unit

• 1. History of Correction
• 2. CONTENTS
• 3. FOR SAFETY
• 4. General
• 4.1. Specifications
• 4.2. Exterior view
• 4.3. Sectional view
• 4.4. Criteria for replacing parts
• 4.5. Route of cooling water and lubricating oil
• 4.6. Lubricating oil
• 4.7. Disassembly and reassembly
• 4.8. Special tools
• 4.9. Notes on disassembly, inspection and reassembly
• 5. Disassembly
• 5.1. Disassembling the upper case
• 5.1.1. Removal of the unit
• 5.1.2. Disassembling the unit
• 5.2. Disassembling the lower case
• 5.2.1. Removal of unit
• 6. Reassembly
• 6.1. Reassembling the bearing for lower case
• 6.1.1. Needle bearing
• 6.1.2. Taper roller bearing outer race
• 6.2. Reassembling the bearings of shaft
• 6.2.1. Propeller shaft
• 6.2.2. Drive shaft
• 7. Shim adjustment (Gear backlash adjustment)
• 7.1. Location of adjustment shims
• 7.2. Measurement of the dimensions of the cases
• 7.2.1. Upper case
• 7.2.2. Lower case
• 7.3. Shim selection method for the clutch shaft
• 7.3.1. Measurement of the dimensions (L1, L2, L3) of the gear
• 7.3.2. Calculation of the shim thickness
• 7.4. Shim selection method for the pinion shaft
• 7.4.1. Measurement of the pinion dimensions
• 7.4.2. Calculation of the shim thickness
• 7.5. Shim selection method for the drive shaft
• 7.5.1. Measurement of the dimensions (M1) of the pinion
• 7.5.2. Calculation of the shim thickness
• 7.6. Shim selection method for the propeller shaft
• 7.6.1. Measurement of the dimensions (M3) of the gear
• 7.6.2. Calculation of the shim thickness
• 8. Adjustment of bearing assembly gap
• 8.1. Upper gear bearing
• 8.1.1. Measurement of the dimension (L6) of the bearing
• 8.1.2. Calculation of the shim thickness
• 8.2. Pinion shaft bearing
• 8.2.1. Measurement of the dimension (L4) of the bearing
• 8.2.2. Calculation of the shim thickness
• 8.3. Pinion drive shaft bearing
• 8.3.1. Measurement of the dimension (M2) of the bearing
• 8.3.2. Calculation of the shim thickness
• 8.4. Propeller shaft bearing
• 8.4.1. Measurement of the dimension (M4) of the bearing
• 8.4.2. Calculation of the shim thickness
• 9. Adjustment of the gear backlash
• 9.1. Upper gear
• 9.2. Lower gear
• 10. Adjustment of the gear dye pattern
• 10.1. Upper gear
• 10.2. Propeller shaft
• 11. Adjustment of the shift lever
• 11.1. Measurement of the dimensions (H, A)
• 11.1.1. Shift Lever bolt
• 11.1.2. Shifter pin position
• 11.2. Calculation of the shim thickness
• 11.3. Caution of reassembly
• 12. Tightening torque for nuts and bolts
• 13. Colophon
• 14. Back cover