Alamo T 7740 manual Failures of the mower push-pull switch, Models

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TECHNICAL INFORMATION BULLETIN No. 092895

Alamo Industrial Technical Services Department

1502 East Walnut

Seguin, Texas 78155

830-372-2708

Models:

All Hydraulic mowers using the 02964028 Push-Pull Switch

Bulletin No:

092895

Date:

Sep. 28, 1995

Failures of the mower push-pull switch:

Alamo has recently received reports of failures of the referenced switch. The failures modes are:

(a)Knob pulls off rod.

(b)Rod and Knob pulls out of switch body.

Test performed on numerous switches indicates that the (b) failures are due to excessive force being applied to the knob when shutting off the mower. Specifically, the knobs are usually roughly slapped to turn the mower off. After internal parts of the switch are damaged, the rod can then be pulled out easily. The (a) failures are due to the knobs not being securely tightened.

To prevent these failures from occurring, or to replace a damaged switch, use the following procedure to adjust the travel of the switch. (See attached diagram).

1.Install the switch body in the holder and tighten the nut.

2.Screw the Knob on the rod to the bottom of the thread, but do not overtighten. It will probably be necessary to hold the rod with pliers to get the knob tight, if you do use caution not to score the rod with the pliers.

3.Measure the distance (if any) between the knob and the nut. Record the measurement.

4.If a Gap exists between the knob and the nut, remove the knob.

5.Remove the nut and install the same thickness of flat washers that was measured in step 3. Install and tighten the nut> DO NOT install more washers than needed to take up the space. Flat Washer Part No. 00023500 or equivalent can be used.

6.Install the Knob, using Locktite or similar thread locking compound. Thread the knob on the rod all the way. Test to make sure that when the switch is "Off" (with rod pushed in) that the knob can not travel further into the switch.

MACHETE	Continued Next Page

© 2005 Alamo Group Inc.

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Contents Information Service Bulletins EditionPage Information & Service Bulletins Introduction Index Machete Section Service Bulletins Alamo Group Inc Section Pulley Fastening to Cutter Shaft of Flail Axe Head SubjectMachete Failures of the mower push-pull switch ModelsTechnical Information Bulletin Information Bulletin 092895 from previousWelding Procedure Parts NeededInformation Bulletin 121495 from previous Corrective Action New Piston Pump used on Machete New Parts Old PartsNew Seal Protector Added to Blade Bar Assembly Information Bulletin 032596 from previous Oil Leaking from new single Acting Hydraulic Cylinders Dead Batteries on New tractors Cracks in Main Frame Information Bulletin 010397 from previous Interference between Tube Clamps and Main Frame Valve Block O-Ring Replacement Kit available King Pin and Boom Pin Bushing Drivers Available Machete Hitch Post Replacement Kits Hitch Post Replacement KitsRepair Procedures Information Bulletin 041797-1 from previous Flanges to prevent rustCylinder & Linkage Pin Replacement Kits Kit NumbersInformation Bulletin 041797-2 from previous Tilt Link Arm Stop New Thick Blade Bar & Larger Bolts Procedure Joystick Power Cut Off SwitchParts needed Cylinder, Link Arm, Turning Arm & Hitch Post Pin Update Kit Parts RequiredUpdate Kits Combined Kit P/N Machete Lock Valve Installation Instructions Following parts are required to make this modificationElectrical connection Information Bulletin 120697 from previousTo Valve Eleminate Erratic Boom movement Hood to Frame Interference on TS Series Tractors Part Numbers requiredNew Holland TS Series Fuel Filter New Oil Filter Kit P/N Spindle Oil Filler Kit P/N When to Change Filter Filter Maintenance ProcedureElement Service Procedure Control Valve Relocation Change in the availability of rebuilt components Filter Kit to Update Control Valve System Kit P/N Filter Maintenance Procedure Buzz Bar Drive Coupling Design change Spindle Bearing Lubrication Update ConversionRecommended Brands of Hydraulic Oil Warranty Repairs Effective February 18Factory Spoke Cast Pulley Information Bulletin 041503 from previous Recommended Tools Installation ProcedureProtection of Lexan Sheets Information Bulletin 102103 from previous Driveline Update Kit KIts AvailableInformation Bulletin 011304 from previous Pulley SpacerMachete Service Bulletins Service Required Joystick ReplacementParts Labor Old Parts Disposition Termination Date Motor to Spindle Bolt Replacement King Post Pin Replacement Longer Pins Machete Rear Flap Bracket, Machete Rotary Head Service Bulletin Service Bulletin 962503-1 from previousLower Crossmember Kit Installation Frame Rail Reinforcement, LH Frame Rail Joystick Control of Boom Movement Restrictor Installation Tilt Cylinder Function Parts Required Turning Arm King Pin Replacement Kits Turning Arm King Pin UpgradesNext Service Bulletin 971903 from previous Boom Hinge Point Pin Upgrades Service Bulletin 972103 from previous Restrictor Installation Lift & Dipper Cylinder Function Upper King Pin Bushing Slipping Blade Bolt Inspection / Recall Lower Cross Member Reinforcement Kit P/N Model T6640 New Holland T7740 & T6640 A/C Drier CampaignUnits Serial Numbers Model T Special NoteNew Holland TS Tractor Inspection Campaign Units Serial NumbersTurning Arm Pin Update Kit P/N Service Bulletin 991012 from previous Dipper Boom Reinforcement Plates Repair PlatesValve Pressure Filter Kit Buzz Bar Head Motor Coupler Re-Design Buzz Bar Head Motor Coupler Coupler Update Kit Blade Bolt Inspection 222 Blade Carrier Retaining BoltsAll Brahmas Port Plug Update SubjectService Instructions Parts RequiredPage Alamo Group Inc