MBE 900 SERVICE MANUAL 10. Measure the shaft length of the main bearing-cap bolts. Replace any bolts that exceed the maximum shaft length. See Figure 1-34 and see Table 1-13a. 1. Main Bearing-Cap Bolt Figure 1-34 Measuring a Main Bearing-Cap Bolt Size Bolt Shaft Length (New) Maximum Shaft Length M14 x 2.0 114 mm (4.48 in.) 116.0 mm (4.57 in.) 134 mm (5.28in.) 136.0 mm (5.35 in.) Table 1-13a Main Bearing Bolt Maximum Reuse Length 11. Put a light coat of oil on the main bearing-cap bolts. Install all the M14 main bearing-cap bolts. Tighten each one in four stages. The tightening stages are listed in Table 1-14. Size Max. Shaft Length Tightening Stage Torque Value Stage 1 30 N m (22 lb ft) M14 x 2.0 (116.0 mm (4.57 in.) or 136.0 mm (5.35 in.) Stage 2 Stage 3 80 N m (59 lb ft) 155 N m (114 lb ft) Stage 4 additional 90 degrees Table 1-14 Tightening Stages, Main Bearing-Cap Bolts 12. Install the thrust washers in the bearing cap, making sure the slots on the thrust washers are facing outboard. See Figure 1-33. 13. Install the thrust washer bearing cap. Tighten the bolts in stages to the same torque as the other bearing-cap bolts. 14. Measure the crankshaft end-play (lateral runout) at the thrust washer bearing journal. See Figure 1-35. All information subject to change without notice. (Rev. 2005) 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION From Bulletin 2-mbe900-05 1-53
1.6 CRANKSHAFT [a] Set up a dial gauge and a dial gauge holder. See Figure 1-35. 1. Crankshaft 3. Dial Gauge Holder 2. Dial Gauge Figure 1-35 Checking the Crankshaft End-Play (Lateral Runout) [b] [c] [d] Move the crankshaft all the way forward by prying on one of the bearing caps, then zero out the dial gauge. See Figure 1-35, A. Move the crankshaft all the way to the rear. Note the end-play on the dial gauge. See Figure 1-35, A. If the end-play is not 0.16 mm to 0.38 mm (0.006 in. to 0.015 in.), replace the thrust washers with those of the necessary thickness. Oversize thrust washers are available. (Rev. 2005) All information subject to change without notice. 1-54 From Bulletin 2-mbe900-05 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION
MBE 900 SERVICE MANUAL 15. Attach the crankshaft gear to the crankshaft flange. Refer to section 1.7.2. Align the key on the crankshaft with the keyway in the gear. Make sure the mark "1" on the crankshaft gear is between the markings "1 1" on the camshaft gear. See Figure 1-36. 1. Crankshaft Gear 2. Camshaft Gear Figure 1-36 Aligning the Marked Gear Teeth 16. Install the pistons. Refer to section 1.15.2. 17. Install the oil pump. Refer to section 3.3.2. 18. Install the oil pan. Refer to section 3.7.2. BODILY INJURY To avoid injury from a falling component, ensure a proper lifting device is used. Never stand beneath a suspended load. 19. Install the flywheel housing. Refer to section 1.14.2. 20. Install the cylinder head. Refer to section 1.2.2. 21. Install the engine in the vehicle. All information subject to change without notice. (Rev. 2005) 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION From Bulletin 2-mbe900-05 1-55
1.7 CRANKSHAFT GEAR 1.7 CRANKSHAFT GEAR 1.7.1 Crankshaft Gear Removal Remove the crankshaft gear as follows: 1. To remove the crankshaft gear, first remove the engine. (Rev. 2005) All information subject to change without notice. 1-56 From Bulletin 2-mbe900-05 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION
MBE 900 SERVICE MANUAL 1.7.2 Crankshaft Gear Installation Install the crankshaft gear as follows: 1. Line up the keyway in the crankshaft gear with the key on the end of the crankshaft. Make sure the "1" mark on the crankshaft gear is between the "1-1" mark on the camshaft gear. See Figure 1-39. 1. Camshaft Gear 2. Crankshaft Gear Figure 1-39 Aligning the Camshaft and Crankshaft Gear Marks 2. Install the flywheel housing. Refer to section 1.14.2. 3. Install the engine. All information subject to change without notice. (Rev. 2005) 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION From Bulletin 2-mbe900-05 1-59
1.8 OIL PUMP DRIVE GEAR 1.8 OIL PUMP DRIVE GEAR The drive gear for the oil pump must be replaced, not repaired. 1.8.1 Oil Pump Drive Gear Removal Remove the old oil pump drive gear as follows: 1. Remove the engine from the vehicle. BODILY INJURY To avoid injury from a falling component, ensure a proper lifting device is used. Never stand beneath a suspended load. 2. Remove the crankshaft from the engine. Refer to section 1.6.1. BURNS To avoid injury from burning, use lifting tools and heat-resistant gloves when handling heated components. 3. Heat the oil pump drive gear to 200 C (392 F). 4. Using a suitable puller, remove the oil pump drive gear from the front end of the crankshaft. See Figure 1-40 and Figure 1-41. (Rev. 2005) All information subject to change without notice. 1-60 From Bulletin 2-mbe900-05 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION
MBE 900 SERVICE MANUAL Size Main Bearing Journal Diameter Main Bearing Journal Width Thrustwasher Bearing Journal Width Connecting-Rod Bearing Journal Diameter Connecting-Rod Bearing Journal Width All Sizes 31.0 31.2 (1.220 1.228) 34.0 34.2 mm (1.339 1.346 in.) Standard 85.990 86.010 (3.3854 3.3862) 31.000 31.062 (1.2205 1.2229) 69.995 70.015 (2.7557 2.7565) 0.10 (0.004) 85.890 85.910 (.3.3815 3.3823) 69.895 69.915 (2.7518 2.7526) 0.25 (0.010) 85.740 85.760 (3.3756 3.3764) 69.745 69.765 (2.7459 2.7466) 0.30 (0.012) 31.300 31.362 (1.2323 1.2347) 0.50 (0.020) 85.490 85.510 (3.3658 3.3665) 31.500 31.562 (1.2402 1.2426) 69.495 69.515 (2.7360 2.7368) 0.75 (0.030) 85.240 85.260 (3.3559 3.3567) 69.245 69.265 (2.7262 2.7270) 1.00 (0.040) 84.990 85.010 (3.3461 3.3469) 68.9950 69.015 (2.7163 2.7171) Table 1-52 Crankshaft Repair Specifications Size Main Bearing Inner Diameter Standard 86.066 to 86.108 (3.388 to 3.390) 0.1 (0.0039) 85.966 to 86.008 (3.384 to 3.386) 0.25 (0.0098) 85.816 to 85.858 (3.379 to 3.380) 0.5 (0.0197) 85.566 to 85.608 (3.369 to 3.370) 0.75 (0.0295) 85.316 to 85.358 (3.359 to 3.361) 1.0 (0.0394) 85.066 to 85.108 (3.349 to 3.351) Table 1-53 Main Bearing Repair Specifications Size Max. Shaft Length Tightening Stage Torque Value Stage 1 30 N m (22 lb ft) M14 x 2.0 (116.0 mm (4.57 in.) or 136.0 mm (5.35 in.) Stage 2 Stage 3 80 N m (59 lb ft) 155 N m (114 lb ft) Stage 4 additional 90 degrees Table 1-54 Tightening Stages, Main Bearing-Cap Bolts All information subject to change without notice. (Rev. 2005) 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION From Bulletin 2-mbe900-05 1-183
Vibration Damper The tightening stages for the vibration damper mounting bolts are listed in Table 1-55. Maximum Shank Length Tightening Stage Torque Value 61.0 mm (2.40 in.) Stage 1 Stage 2 Stage 3 50 N m (37 lb ft) 125 N m (92 lb ft) additional 90 degrees Table 1-55 Tightening Stages, Vibration Damper Mounting Bolts (Rev. 2005) All information subject to change without notice. 1-184 From Bulletin 2-mbe900-05 6SE414 0404 Copyright 2005 DETROIT DIESEL CORPORATION