SERVICE BULLETIN No. 991012
Alamo Industrial Technical Services Department
1502 East Walnut
Seguin, Texas 78155
| Models: | Machete Boom |
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| 991012 |
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| Dec. 10, 1999 | ||
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| (Old # 990005A) | ||||
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| Parts: |
| Labor: | Old Parts Disposition: | Termination Date: | |||
| 100 % at Dealer Net | 3.8 hrs. at Dealer registered | Hold all Parts involved fo | Jun 1, 2000 | ||||
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| Shop Rate | Warranty Return |
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Turning Arm Pin Update Kit P/N 02974182:
Subject:
Machete Boom Mower Turning Arm Main Pin Retaining Design Update to increase the durability of the main Pin retaining device.
Service Required:
1.Secure the tractor to facilitate a safe repair, (Engine off, Park brake on, Key Secured & etc..). You will need a Machete Operators Manual and a Machete Service Manual, these are available from Alamo Industrial. It is recommended that these manuals are on hand.
2.This will require drilling to install a larger Retaining Bolt and welding to install the Snap Ring grooved boss (See Figure 1) on the bottom of the Turning Arm Pin, The Old retaining Bolt at the bottom of the Pin is a 3/8", this will be removed and the hole will need to be drilled out to a 1/2" to accept the new larger bolt.
3.Make sure that the Boom is out stretched and the head is setting flat on the Floor (Ground). Make certain that all hydraulic pressure is relieved from the system, this will need to be done manually at the valve (See Machete Service Manual for this procedure).
4.Support Boom with a hoist as shown in the operators manual and/or service manual before beginning work on retaining pin.
5.From the under side use a 1/2" thick steel plate and a hydraulic Jack up under turning arm pin to prevent the pin from falling out when the retaining bolt is removed. Remove the 3/8" retaining bolt and drill the hole out to a 1/2" hole so you can install the 1/2" Retaining Bolt (See Figure 3)
6.With the new 1/2" retaining bolt installed (do not remove or lower Jack without retaining Bolt installed) lower the supporting hydraulic Jack and 1/2" steel plate but do not remove it. (See Figure 3).
7.Install the new Grooved Snap Ring Boss up under the existing Boss that is welded to the turning arm. Making certain that the OD of new boss is aligned with the OD of the old one, if it is not aligned the ID of the boss's will not be aligned and Pin cannot pass through it. Using the 1/2" steel plate and the hydraulic jack, raise jack till there is enough pressure on new boss to hold it straight and aligned with the existing one. Do Not apply so much pressure that you distort the new boss. (See Figure 4)
8.Weld the new Snap Ring Grooved Boss to the existing boss. Lower the Plate and Hydraulic Jack to remove them. Install the New Snap Ring into the groove of the new boss. The purpose of this snap ring is to keep the pivot pin from dropping out the bottom if the retaining bolt breaks or comes out.
MACHETE | Continued Next Page |
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