The crank shaft assembly consists of crank shaft, ring gear, connection rod (with bearing) and the main bearing. The working clearance of bearing is pre-determined by the fitting precision of the installed shaft and the relevant holes.
F-1600 MUD PUMP CRANKSHAFT ASSEMBLY
| Item | Quantity | Name | Drawing No. |
| 1 | 2 | Main bearing cover | AH3700-01.01C.00 |
| 2 | 1 | Main bearing sleeve (right) | AH37001-01.02 |
| 3 | 2 | Sealing gasket | AH36001-02.03 |
| 4 | 2 | Inner stop collar | AH36001-02.04 |
| 5 | 3 | Outer stop collar | AH37001-01.03 |
| 6 | 3 | Connection rod | AH37001-01.04 |
| 7 | 1 | Positioning ring (I) | AH36001-02.07 |
| 8 | 1 | Hollow crankshaft | AH36001-02.08A.00 |
| 9 | 1 | Positioning ring (II) | AH36001-02.09 |
| 10 | 1 | Big ring gear | AH37001-01.05D.00 |
| 11 | 12 | Bolt M39×3-6g×140 | T52-3007 |
| 12 | 2 | Isolating ring | AH36001-02.12 |
| 13 | 1 | Main bearing sleeve (left) | AH37001-01.06 |
| 14 | 2 | Stop collar | AH37001-01.07 |
| 15 | 2 | Baffle plate | AH36001-02.15 |
| 16 | 4 | Main bearing bolt | AH36001-02.16C |
| 17 | If demanded | Shim set | AH36001-02.17 |
| 18 | 2 | Screw M16×120 | T52-6006K |
| 19 | 12 | Bolt M39×3-6H | T57-3005.0 |
| 20 | 72 | Bolt M16×40 | T57-7003K |
| 21 | 28 | Bolt M16×45 | GB5780-86 |
| 22 | 3 | Eccentric wheel bearing | AH37001-01.08.00 |
| 23 | 2 | Main bearing | AH37001-01.09.00 |
| 24 | 28 | Gasket 16 | GB848-85 |
| 25 | 40m | Locking steel wire F1.5 | GB343-82 |
| 26 | 3m | Locking steel wire F | GB343-82 |
| 27 | 90ml | Thread anaerobic locking sealant | Le Tai glue 243 |
| 28 | 2 | Screw M16×100 | T52-6004K |
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