Specifications

Service Training
Page 4.2
Section 33
09.04
ADJUSTMENTS
TEST CONDITIONS
- Jack the truck up and secure it safely, so that both drive wheels can spin freely.
- Truck is at operating temperature.
- Travel and braking actuation correctly set.
HYDRAULIC ZERO POSITION
TEST
Test Findings Evaluation
Start engine. Release Wheels stop. Zero position in order.
brake, bring engine up
to full speed manually. Wheel/s turn. Zero position not in order.
Set in the following manner:
- Raise cover and remove the base plate.
- Loosen the locknut (12) and adjusting screw (10) (pilot casing) using flat spanner with jaw span by turning
until the drive wheels stop.
- Continue turning the adjusting screw (10) until the wheels start to turn.
- Mark the spanner position.
- Turn the adjusting screw back until the wheels start turning in the opposite direction.
- Mark the spanner position.
- Turn the adjusting screw (10) back to half of the marked position.
- Tighten the locknut (12).
- Bring the engine up to maximum speed manually. The wheels should not turn.
START OF PRIMARY CONTROL
- Connect a low pressure gauge to ports Y and Z of the remote control.
- Allow the engine to idle at low speed.
- Slowly depress the forward and reverse pedals and determine Δp (specified value: 4 bar) at the start of
control (wheels start turning).
- Δp of 4 bar is reached for forwards and reverse: in order.
Δp <> 4 bar for forward and/or reverse: Set a Δp of 4 bar by means of the shims (5).
REVERSE LOCK-OUT
The response pressure of the reverse lock-out is fixed and cannot not be adjusted.