Specifications

Service Training
Page 4.2
Section 77
09.04
4.2.6 TEST AND ADJUSTMENT INSTRUCTIONS FOR HYDRAULIC PRIMARY AND
SECONDARY CONTROL
The swash plate angle Q
max
of the variable-displacement pump or the Q
max
/Q
min
of the hydraulic motors need
only be checked if required in "Hydrostatic travel drive" of the troubleshooting.
The following tests and adjustments must only be performed by qualified skilled staff. The variable-
displacement motors and pump can be destroyed if the adjustment instructions are not followed.
The following gauges and instruments are required:
- hydraulic test box
- adapter No. 1.31 and 1.32
- tachometer for diesel engine
- tachometer for wheel speed
Test conditions for
all the activities described below:
- Truck jacked up and secured so that the traction wheels can rotate freely.
- Floor plate removed.
- Traction motor and travel hydraulics at operating temperature.
- Engine speed reaches 2250 - 2350 rpm when the brake is released and the accelerator pedals are fully
depressed.
- Screw in adapter III at ports Y and Z of the remote control unit and install a LP gauge.
- Install round connector 1.31 and banjo bolt 1.32 at port X of the power limiter between the valve block
and piping and
close the valve on banjo bolt 1.32.
NOTE: A new seal 000 962 0437 must be used each time between round connector 1.31 and the pipe.