Edition
2018
Workshop Manual
PARK PRO 340 IX
Chapter
4 Hydraulic system
Page
46
4.6 Troubleshooting
Caution!!!
Pressurized hydraulic uid may be very hazardous if the piping, lines or other
distribution components have leaks. To avoid injuries always wear protective
gloves and safety glasses when working on the hydraulic system.
Before carrying out troubleshooting the following conditions must be met:
Driving system
A
CLOSED
1. The transmission by-pass valves (A) are
closed.
A
A1
A2
2. The transmission engage/disengage lever (A)
must be engaged (pos. A1).
3. The uid level in the reservoir must be correct.
4. There must be no air in the hydraulic uid.
Problem Probable cause Remedy
The machine runs
forward but not in
reverse.
Front transmission by-pass valve
open.
High seepage in the front
transmission.
Close the by-pass valve.
Replace the front transmission.
The machine runs in
reverse but not forward.
Rear transmission by-pass valve
open.
High seepage in the rear
transmission.
Close the by-pass valve.
Replace the rear transmission.
Reduced speed and
irregular traction.
The suction lter (5) is clogged. Clean the lter.
The front wheels do not
provide traction.
One of the transmission splines is
broken.
Replace the relative spline.