KNIFE DRIVE REPAIR / REPLACEMENT
Knife Drive Assembly Repair / Replacement:
1.The knife drive assembly will be limited to the parts that can be replaced. The Actual knife drive subassembly is not a repairable part and will not have replacement parts available, components on the knife drive assembly can be replaced only.
2.It will not be require to remove any of
the hydraulic hoses or even take them loose. |
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The Motor can be unbolted from the drive | Hub Adapter | ||
assembly and laid aside with the hoses still | |||
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connected. The motor has a splined shaft |
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that mates to the hub adapter. |
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3. | Looking down at the planetary drive | Flywheel | |
(and Hydraulic Motor Assembly) there are | |||
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four nuts in the plate that is attached to the |
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drive assembly. Remove these four nuts, if |
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you want to remove the four carriage bolts |
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the skid shoe will have to unbolted and |
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removed. When lifting the drive assembly | Knife Drive | ||
up and away from the cutter bar take notice | |||
of the four tube spacers under the drive | |||
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assembly, there are two different length of |
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the spacers. The short ones go to the rear | Knife Drive | ||
and the long ones go to the front (See Figure | |||
Stud Bearing | |||
22) |
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4. | There are two ways to remove | Support |
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the knife drive assembly from the cutter |
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bar knife head weldment. | Support Mnt |
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5. | 1 st. is to remove the two knife drive | Bolts | Knife Drive | |
bolt that retain the knife drive stud to the drive |
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| Stud Brg Mnt | |||
assembly support bracket, this allows the | Figure 27 | |||
Bolts | ||||
drive stud bearing assembly to stay with the | ||||
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cutterbar (See Figure 27) . |
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6. | Or 2 nd. there is a clamp bolt on the Knife Head Weldment, loosen the clamp123123bolt, this will allow | |||
the Knife drive stud bearing to pull out of the knife head weldment clamp or off the knife drive stud bearing assembly. (See Figure 23 & 24) Once the drive assembly has been lifted off you will see a nylon bearing in the knife bar head clamp, it should have stayed in the clamp or it could have stayed on the knife drive stud bearing assembly (See Figure 23 & 27)
7. The Hub Adapter is bolted to the Flywheel with four bolts, the flywheel is pressed down over the top shaft of the drive subassembly. The Knife stud bearing support bolts to the bottom of the drive subassembly with two bolts. The Knife drive stud bearing bolts to the support bracket (See Figure 27). If you unbolted the stud drive and left it in the cutter bar it should be removed and inspected. This stud drive is a sealed bearing drive assembly, there are no replaceable parts in it so it can only be replace as an assembly. To check the stud drive bearing assembly hold the top where the two bolts mount it to the support bracket. Grab the OD of the stud drive and the outer cover should spin freely while the top for the two bolts will not, it should not be rough or out of round. To work properly it must be free and smooth turning. Check the nylon bearing in the knife head weldment, it has to be in good condition also. This nylon bearing does not turn when installed, it acts solely as a bushing between the clamp and stud drive bearing assembly and prevent the clamp from crushing the drive stud bearing. (See Figure 22, 23 & 27)
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