Alamo JD-5525, JD-5425, JD-5225, JD-5205, JD-5105 manual Knife BAR Replacement, Knife Bar Replacement

Asy. Man) 05/05

Nylon Bearing Clamp & Clamp Bolt

Knife Head Weldment

Blade Section

Knife Backing Strip

Figure 11

Drive Stud

that retain the drive

KNIFE BAR REPLACEMENT

Knife Bar Replacement:

Replace the Knife Bar assembly will require the cutter bar assembly to be unbolted from skid shoe / break-a-way assembly. Wear gloves as the knives on the cutter bar can be very sharp and can cut you. (See Figure 10 & 11)

It will not be require to remove any of the hydraulic hoses or even take them loose. Looking down at the planetary drive (and Hydraulic Pump Assembly) there are four nuts in the plate that is attached to the drive assembly. Remove these four nuts, if you want to remove the four carriage bolts the skid shoe will have to unbolted and removed. When lifting the drive assembly up and away from the cutter bar take notice of the four tube spacers under the drive assembly, there are two different length of the spacers. The short ones go to the rear and the long ones go to the front. 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.

There will be two more bolts connecting cutter bar to break-a-way assembly once these nuts are removed the cutter bar should lift up over the bolts if they were left in. There will be a square plate under the cutter bar that has 6 holes in it, make certain to note this for reassembly.

Use caution the knife bar can be very sharp, it is recommended that you wear gloves to protect your hands. The Knife Bar will slide out at the drive end, if it will not slide out then something is wrong. Check the rock guards, clips and other components to see where it is to tight. The easiest way if any of these make it to tight is to unbolt them and remove them for now. The new or repaired knife bar will install the same way, it will slide in from the drive end under clips and between rock guards. DO NOT use hammer or force to install knife bar, if it will not slide in find out why because if the bar is forced in it will be damaged or other component will be damages. The Knife bar and cutter bar can not operate fitting tightly together they will bind causing damage..

When reinstalling cutter bar reverse the disassembly procedures. Make certain the nylon bearing is in good condition or replaced, sometimes the clamp will have to be loosened to get the nylon bushing installed into clamp and the drive stud that is attached to the drive assembly with two socket head bolts, DO NOT tighten the clamp bolt at this time. This drive stud can be unbolted from drive assembly, inserted into nylon bearing and re-bolted to drive assembly later (See Figure 10 & 11). if the drive stud is removed from the drive assembly when you reinstall it the two socket head bolts will need to be torqued to 35 ft. lbs.

The nuts on the carriage bolts (4 short and 2 long 3/4" carriage bolts) assembly and the cutter bar to the break-a-

way assembly must be torqued to 85 ft. lbs. Tighten the clamp bolt around the drive stud, use a good thread lock com-

pound on clamp bolt and tighten the clamp bolt until the up & and down movement of clamp on drive stud is removed. DO OVER TIGHTEN the clamp bolt as the drive stud has a bearing inside that will be damaged.

After the assembly is finished the guards, clips and ledger must be checked for clearance, see the previous section in this manual for setting knife bar to cutter bar components (See Figure 10 & 11).

The skid shoe will be the last item reinstalled. Make certain the rod deflector which bolts to the front of the skid shoe is pointed correctly.

Switch Blade (JD-5105-5205-5225-5325-5425-5525,

© 2005 Alamo Group Inc. Section 7 - 6