November 2008 Section 2 - Technical Specification
TECHNICAL SPECIFICATION
Document 57.0009.0427
17
GTH-4017EX GTH-4514EX GTH-4013EX
3.1 HYDROSTATIC TRANSMISSION PUMP
(ANNEX 4)
Pump check points.
A. high pression manometric socket MB.•
B. low pression manometric socket M3•
C. pressure cut-off valves (max 450 bar).•
D. high pression safety valves (480 bar)•
E. boost pressure valve.•
F. forward/revers speed solenoids•
Max. pressure of the valves C is 450 bar
3.2 CHECK TRANSMISSION PILOTING
(ANNEX 6)
Fit a 0-600 bar manometer to the transmission in •
M4
Disconnect the incing electrical connection located •
on the service brake under the cab.
Press down on the service brake by left foot.•
Set the forward or reverse speed.•
Run the engine at maximum speed.•
With engine at minimum rpm on M4, the value of •
manometer is equal to the value of boost pressure.
Running the engine at maximum speed, the value
of manometer rises and the piloting hoses are well
connected: the M4 pump to the XB engine, the M5
pump to the XA engine.
4. CALIBRATING THE POWER STEERING
Fit a coupling complete with mini-socket • Z in the
position shown in annex 5.
Fit a 0-250 bar manometer to the mini-socket • Z.
Select the front axle steering mode.•
Move the steering cylinder to stroke end and make •
sure the value of the power steering A is 170 bar.
If the value is less, tighten valve X; if the value is
greater, loosen the valve.
To gain access to valve X, remove the protection
cap (see annex 5).
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