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OPERATION
Switch Board "X2" in Cab Base (continued)
Service Switch for "QMIN" and "QMAX" Control of the Main
Hydraulic Pumps (S155), illustration Z 23071
The Service switch "S155" is used for testing and adjustment
procedures of the hydraulic system and should only be oper-
ated through authorized service personnel
(S155)
Service switch for Qmin/Qmax position of main
hydraulic pumps.
Switch positions:
0 - Normal operating position
1 - Qmax position. The main pumps remain in maxi-
mum delivery position.
2 - Qmin position: The main pumps remain in Qmin
position i.e. minimum oil delivery to the hydraulic
system.
NOTICE
Make sure that the switch (S155) is set to "0" position as
soon as the testing and adjusting procedures of the hydrau-
lic system are finished.
Indicator Lights (H63), (H138), (H143.1) and (H143.2)
(H63)
Electronic pump control module (E32) active and
program information.
(H138)
This light pulses if there is a failure in the electronic
pump control module (E32)
(H143.1
Monitoring light of the automatic engine oil supply
for rear
system "Reserve"
engine 1)
Steady light: oil is pumped from engine oil pan to
(H143.2
reserve oil tank.
for front
Regular blinking: oil is pumped from reserve oil
engine 2)
tank to engine oil pan.
Irregular blinking: oil is pumped in both directions,
oil level in engine oil pan is correct.
REMARK
If the indicator lights (H143.1 and H143.2) are off with the
engines running, there is a failure in the reserve systems. Have
the reserve systems checked and repaired through authorized
service personnel.
CAUTION
3.7 ELECTRICAL EQUIPMENT IN CAB BASE
203
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