Alamo T 7740 manual Lock Valve Installation Instructions

Page 36

TECHNICAL INFORMATION BULLETIN No. 120697

Alamo Industrial Technical Services Department

1502 East Walnut

Seguin, Texas 78155

830-372-2708

Models: MacheteBoom MB21 & MB24

Bulletin No:

120697

Date:

Dec. 6, 1997

Lock Valve Installation Instructions:

Instructions for installing a lock valve on the tilt function of an Alamo Industrial Model Machete Boom product manufactured before May 1, 1997.

The nominal leak down rate for the cutter head tilt section of the electrically controlled positioning valve is one inch of rod travel in four minutes. If your machine exhibits a leak down rate substantially greater than this, it typically indicates excessive valve component wear due to contaminated oil in the tractor. Refer to the Tractor's Operator / Maintenance guide concerning Oil & Filter change intervals to eliminate contamination possibilities.

If the cutter head tilt cylinder leak down is greater than one inch of rod travel in four minutes and this is considered excessive, a lock valve may be added to the tilt function of the boom machine. Alamo Industrial has developed a cure for this and can provide (at a nominal charge) all the parts for a lock out vale for the tilt function. The Lock valve will only work on the tilt function of the Boom Machine due to the design of the hydraulic System. The only parts that must be provided by the installer are two, twelve inch pieces of 18 gauge wire. Each wire needs to have a # 8 ring connector on one end and a wire splice connector on the other end.

The drawings on the next page shows the details of the parts and their assembly. The Lock Valve must be installed in the "C-1" port of the cutter head tilt section

The following parts are required to make this modification:

Part No.

Qty

Description

02972180

1

Straight Hydraulic Adapter (available from Alamo Industrial)

001654

1

Hydraulic Fitting, 90° Elbow (available from Alamo Industrial)

02972208

1

Solenoid Valve Assembly (available from Alamo Industrial)

-------------

2

18 gauge wire, 12" long each (furnished by installer)

-------------

2

# 8 ring connectors (furnished by installer)

-------------

2

18 gauge splice connectors (furnished by installer)

NOTE; Installation of this Lock valve will not be covered under warranty.

Continued Next Page

MACHETE

© 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 Joystick Power Cut Off Switch ProcedureParts 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 modificationInformation Bulletin 120697 from previous Electrical connectionTo 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 Filter Maintenance Procedure When to Change FilterElement 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 Installation Procedure Recommended ToolsProtection of Lexan Sheets Information Bulletin 102103 from previous Driveline Update Kit KIts AvailableInformation Bulletin 011304 from previous Pulley SpacerMachete Service Bulletins Joystick Replacement Service RequiredParts 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 Turning Arm King Pin Upgrades Parts Required Turning Arm King Pin Replacement KitsNext 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 New Holland T7740 & T6640 A/C Drier Campaign Units Serial Numbers Model TModel T6640 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 BoltsPort Plug Update Subject Service InstructionsAll Brahmas Parts RequiredPage Alamo Group Inc
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