PROBLEM 19
Travel system response is sluggish.
POSSIBLE CAUSES
Pump or motor is worn. Travel speed out of adjustment.
CHECKS
Use a gauge to check charge pressure at travel diagnostic station. (See Te s t 1 6—
Checking the Pump Charge Pressure and Electrical Test.)
21 bar (300 psi) or More
21 bar (300 psi) or Less
Manually stroke travel pump with brakes applied.
(See Test 10—Manually Stroking the Pump
.) Is system pressure
greater than 414 bar (6,000 psi)?
Adjust charge pressure relief for 24 bar (350 psi).
(See Test 18—Adjusting the Pump Charge
Pressure Relief.) Is 24 bar (350 psi) obtained?
Yes
No
No
Yes
No
Yes
No
Adjust multifunction valve for 414 bar (6,000 psi) system pressure.
(See Test 17—Setting the Pump Pressure
.) Retest with brakes
applied. Is pressure OK?
Adjust travel speed per Shop Procedure SP6. Is correct speed obtained?
Travel system response
should be correct.
Check for leakage at motor. (See Test 7—Testing for
Pump and Motor Leakage.)
Normal
High Leakage
High Leakage
Repair or replace travel pump.
Check for leakage at pump. (See Te st 7—
Testing for Pump and Motor Leakage.)
Repair or replace travel motor.
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