TSE DPT40-B, Руководство пользователя

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30
saue
Series 90 Troubleshooting 7
7.8 System Response is Sluggish
Item Description Action
1. Check oil level in reser-
voir.
2. Check multi-function
valves’ pressure set-
tings.
3. Check pump inlet
vacuum.
4. Check prime mover
speed.
5. Check charge and con-
trol pressures.
6. Check system internal
leakage.
7. Replace transmission.
Insufficient hydraulic fluid will reduce
output pressure.
Incorrect pressure settings will affect
system reaction time.
High pump inlet vacuum will reduce
system pressure.
Low engine speed will reduce sys-
tem performance.
Incorrect charge or control pressures
will affect system performance.
Internal leakage will reduce system
pressure.
Fill reservoir to proper level.
Adjust or replace multi-function valves
(8.1.2 and 9.2.1).
Measure charge inlet vacuum (4.2). If high
replace inlet filter.
Adjust engine speed.
Measure charge and control pressures and
correct if necessary (4.2 and others).
Check for leakage in O-rings, gaskets, and
other fittings (9.1.1 and others).
Replace pump and motor.
7.7 Excessive Noise and/or Vibration
Item Description Action
1. Check oil in reservoir.
2. Air in system.
3. Check pump inlet
vacuum.
4. Inspect shaft couplings.
5. Inspect shaft align-
ment.
Insufficient hydraulic fluid will lead to
cavitation.
Air bubbles will lead to cavitation.
High inlet vacuum will create noise. A
dirty filter will increase the inlet
vacuum.
A loose shaft coupling will cause
excessive noise.
Unaligned shafts will create exces-
sive frictional noise.
Fill reservoir to proper level.
Look for foam in reservoir. Check for leaks
on inlet side of system loop. Afterwards, let
reservoir settle until bubbles are gone. Run
system at low speed to move system fluid
to reservoir. Repeat.
Inspect and replace filter as necessary.
Check for proper suction line size.
Replace loose shaft coupling in charge
pump (Sec. 9.2.4) or replace pump or mo-
tor.
Align shafts.
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