Dingo TX425 Service Manual

The Dingo TX425 is a compact track loader designed for heavy-duty construction and landscaping applications. This service manual provides comprehensive information for maintenance, troubleshooting, and repair procedures. The TX425 features a powerful diesel engine, hydraulic track drive system, auxiliary hydraulic circuits, and robust construction for demanding work environments. Below are key sections covering specifications, maintenance schedules, troubleshooting, repair procedures, and safety information.

1. Specifications 2. Maintenance Schedule 3. Fluid Capacities 4. Hydraulic System 5. Engine Service 6. Track System 7. Electrical System 8. Safety Procedures 9. Troubleshooting Guide 10. Parts Catalog

Specifications

Key technical specifications for the Dingo TX425 compact track loader.

Parameter	Specification
Model	TX425
Engine Type	Diesel, 4-cylinder
Horsepower	74 hp
Operating Weight	8,450 lbs
Track Length	72 inches
Ground Pressure	5.2 psi
Lift Capacity	2,500 lbs
Dump Height	96 inches
Travel Speed	0-7.5 mph
Auxiliary Hydraulics	Standard High Flow

Maintenance Schedule

Regular maintenance intervals to ensure optimal performance and longevity.

Daily: Check engine oil level, hydraulic fluid, coolant level, and track tension.
50 Hours: Lubricate all fittings, check battery terminals, inspect tracks.
250 Hours: Change engine oil and filter, check air filter, inspect hydraulic hoses.
500 Hours: Change hydraulic filters, fuel filter, inspect drive system.
1000 Hours: Complete fluid change, inspect bearings, check valve adjustments.

WARNING! Always perform maintenance with engine off and machine on level ground. Use proper personal protective equipment.

Fluid Capacities

Engine Oil: 8.5 quarts with filter change
Hydraulic System: 15 gallons total capacity
Fuel Tank: 25 gallons
Cooling System: 4.5 gallons
Final Drive (each): 3.2 quarts
Recommended Engine Oil: 15W-40 Diesel Grade
Hydraulic Fluid: AW-46 or equivalent
Coolant: 50/50 ethylene glycol mixture

Hydraulic System

The TX425 features a high-pressure hydraulic system with dual pumps and auxiliary circuits.

Main Components: Hydraulic pump (gear type), control valves, cylinders, motors, and filters.

System Pressure: 3,000 psi operating pressure. Relief Valve Setting: 3,500 psi. Flow Rate: 25 gpm main system, 18 gpm auxiliary. Filter Locations: Suction filter, pressure filter, return line filter. Hydraulic Oil Specifications: Use AW-46 or equivalent hydraulic oil. Reservoir Capacity: 15 gallons.

Engine Service

Kubota diesel engine maintenance and service procedures.

Oil Change: Drain oil when warm, replace filter, refill with 8.5 quarts.
Fuel System: Replace fuel filter every 500 hours, bleed air from system.
Air System: Clean pre-cleaner daily, replace air filter when restriction indicator shows.
Cooling System: Check coolant level daily, pressure test system annually.
Valve Adjustment: Check every 1000 hours, intake 0.006", exhaust 0.011".

Tip: Always use genuine replacement filters for optimal engine performance and warranty compliance.

Track System

Rubber track maintenance, adjustment, and replacement procedures.

Track Tension: Adjust to 1-1.5 inches deflection at mid-point between rollers.
Track Inspection: Check for cuts, tears, and excessive wear regularly.
Roller Maintenance: Lubricate rollers every 50 hours, inspect for leaks.
Idler Adjustment: Use grease gun to adjust track tension, relieve pressure for removal.
Track Replacement: Remove old track, install new track, adjust tension properly.

WARNING! Never operate with loose or over-tightened tracks. Improper tension causes premature wear and component failure.

Electrical System

12-volt electrical system with alternator and starting circuit.

Component	Specification
Battery	12V, 650 CCA
Alternator	65 amp output
Starter	12V, 2.5 kW
Fuses	Various ratings (see diagram)
Relays	Main power, starter, glow plugs

Wiring Diagrams: Located in appendix section. Always disconnect battery before electrical work.

Safety Procedures

Essential safety guidelines for operation and maintenance.

Operation Safety: Always wear seat belt, keep ROPS in raised position, no riders. Maintenance Safety: Lock out/tag out procedures, proper lifting equipment, fire extinguisher available. Emergency Procedures: Know location of fire extinguisher, emergency stop buttons, and first aid kit.

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, battery, glow plugs	Check fuel level, battery charge, glow plug operation.
Loss of power	Air filter, fuel filter	Check air restriction indicator, replace fuel filter.
Hydraulic system slow	Low fluid, worn pump	Check fluid level, test pump pressure.
Track coming off	Improper tension	Adjust track tension to specification.
Overheating	Coolant, radiator	Check coolant level, clean radiator fins.

Service Hotline: 1-800-DINGO-TX for technical support.

Parts Catalog

Genuine Dingo parts ordering information and exploded diagrams.

Parts Ordering: Contact authorized Dingo dealers with machine serial number. Serial Number Location: Right side frame rail behind operator station. Warranty: 2-year limited warranty on major components. Technical Support: Available Monday-Friday 8am-5pm CST.