PROBLEM 18
Travel system response is sluggish.
POSSIBLE CAUSES
Pump or motor is damaged; Travel speed out of adjustment.
CHECKS
Use a gauge to check charge pressure at travel pressure senders.
300 psi (21 bar) or more
300 psi (21 bar) or less
Manually stroke travel pump with brakes applied.
(See Section 2 - Manually Stroking the Pump.)
Is system pressure greater than 6,000 psi (414 bar)?
Set pump low-pressure source relief to 500 psi
(35 bar). Is correct pressure obtained.
Yes
No
No
Yes
No
Yes
No
Adjust multifunction valve for 6,000 psi (414 bar) system pressure. (See Section 2 -
Setting Pump Pressure.) Retest with brakes applied. Is pressure correct?
Adjust travel speed per Section 2 - Shop Procedure. Is correct speed obtained?
Travel system response
should be correct.
Check for leakage at motor.
(See Section 2 -Testing for Pump or Motor Leakage.)
Normal
High Leakage
High Leakage
Repair or replace travel pump.
Check for leakage at pump.
(See Section 2 -Testing for Pump or Motor Leakage.)
Repair or replace travel motor.
To Next Page
Loading...
Need help?
General
