Troubleshooting

The cause of an improperly functioning hydraulic sys- tem is best diagnosed with the use of proper testing equipment and a thorough understanding of the com- plete hydraulic system.

A hydraulic system with an excessive increase in heat or noise has a potential for failure. Should either of these conditions be noticed, immediately stop the machine, turn off the engine, locate the cause of the trouble, and correct it before allowing the machine to be used again.

Continued use of an improperly functioning hydraulic system could lead to extensive internal component damage.

The charts that follow contain information to assist in troubleshooting. There may possibly be more than one cause for a machine malfunction.

Refer to the Testing section of this Chapter for precau- tions and specific test procedures.

Problem

Possible Cause

 

 

Hydraulic oil leaks

Fitting(s), hose(s), or tube(s) are loose or damaged.

 

O±ring(s) or seal(s) are missing or damaged.

 

 

Foaming hydraulic fluid

Oil level in reservoir is low.

 

Hydraulic system has wrong kind of oil.

 

One of the pump suction lines has an air leak.

 

 

Hydraulic system operates hot

Transmission pressure is high due to load or brakes applied.

 

Oil level in reservoir is low, or inlet filter is loose or clogged.

 

Oil is contaminated or too light.

 

Heat exchanger is damaged or plugged. By±pass relief is stuck

 

open or air flow is obstructed.

 

Charge pressure is low.

 

Towing by±pass valve is open or defective.

 

Wheel motor(s) or reel motor(s) are worn or damaged.

 

Traction pump is worn or damaged.

 

 

Neutral is difficult to find or unit oper-

External control linkage is misadjusted, disconnected, binding, or

ates in one direction only

damaged.

 

Traction pump is worn or damaged.

 

 

Traction response is sluggish

Charge pressure is low. Hydraulic oil is very cold.

 

Towing by±pass valve is open or worn. Brake is not released.

 

Traction pump or wheel motor(s) are worn or damaged.

 

 

No traction in either direction

Brake is not released.

 

Oil level in reservoir is low.

 

Towing by±pass valve is open.

 

Charge pressure is low.

 

Traction pump or wheel motor(s) are worn or damaged.

 

 

Hydraulic System

Reelmaster 2300±D/2600±D

Page 4 ± 17

Hydraulic System

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Toro 2600D, 2300-D service manual Troubleshooting, Problem Possible Cause

2600D, 2300-D specifications

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