Check Calibrating Hydrostatic Transmission; Hydrostatic Transmission Pump; Check Transmission Piloting; Calibrating The Power Steering - Genie GTH-4013 sx Service Manual

Section 2 - Technical Specification
TECHNICAL SPECIFICATION
3. CHECK CALIBRATING
TRANSMISSION (IMAGE 3 AND ANNEX 1)
Do the calibration of the hydrostatic transmission with
the hydraulic oil at 60°C.
• Connect a 0-60 bar manometer to the mini-socket
TP3 to read the boost pressure (see image 3).
• Connect a 0-60 bar manometer to the mini-socket
TP2 to read high pressure (see image 3).
WARNING
During this operation, the operator has to be on the
side of the machine.
• Hold the selector to neutral position and make sure
the maximum speed of the engine does not exceed
2350 giri/min. The engine must run at a idle speed of
950 rpm. Otherwise, adjust the minimum speed.
• Read the boost pressure on manometer TP3 and
ensure it is about 24 bar with the engine running at
idle speed.
The boost pressure has not a fixed value but varies
from pump to pump. (from 20 to 29 bar)
• Hold the machine blocked using the brake pedal,
disconnecting the incing electrical connection located
on the service brake under the cab.
• Set the forward-neutral-reverse selector to the
forward position.
• Run the engine at maximum speed.
• Check the high-pressure value on the manometer
TP2 is 425 bar. (annex 1)
IMAGE 3
TP3
30
20
40
10
50
60
0
18
HYDROSTATIC 3.1
(ANNEX 2)
Pump check points.
•
•
•
•
•
•
Max. pressure of the valves C is 450 bar
3.2
(ANNEX 4)
•
•
•
•
•
•
4.
TP2
•
300 •
400
200
500
100
600
•
•
GTH-4013 SX GTH-4017 SX
HYDROSTATIC TRANSMISSION
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

CHECK TRANSMISSION PILOTING

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.

CALIBRATING THE POWER STEERING

Fit a coupling complete with mini-socket Z in the
position shown in annex 2.
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.
N.B.: To gain access to valve X, remove the
protection cap (annex 3).
May 2008
PUMP
Document 57.4403.4200
Courtesy of Crane.Market