Nilfisk-Advance 56110000, Service Manual

Page: 78 / 102

78 - FORM NO. 56043124 - Condor XL
™
HYDRAULIC SYSTEM
TEST PORT NOMINAL PRESSURE READINGS
Note: See Figure 15 and the GENERAL HYDRAULIC SPECIFICATIONS TABLE.
Note: 100 psi = 6.9 bar
1 Insert the pressure gauge into the test port.
Note: The Lower Test Port (TP 4) on the Scrub Lift Cylinder is easier to access if you lower the scrub deck.
2 Run the engine in high throttle position and allow the hydraulic oil to warm up.

The bypass pressure is the pressure reading with no motor or cylinder operating.

The operational pressure is the pressure range in which the motor or cylinders will operate.

A much lower than normal bypass pressure could indicate a gear pump problem.

If the bypass pressure remains the same after turning the function on, there could be a problem in the control valve or circuit.

If the operational pressure is within range but the motor speed is too slow, the problem could be in the motor.

If the broom motor operational PSI reading is above the bypass psi but is below the operational psi, check the broom adjust-
ment and wear.

Check individual system troubleshooting sections of this manual for additional information.
FIGURE 15
TP 1
TP 3
TP 2
Upper Test Port (TP 5) on the Scrub Lift Cylinder Lower Test Port (TP 4) on the Scrub Lift Cylinder
Accessory Pump
Test Ports
TP 5
TP 4
Scrub Lift Cylinder
Test Ports
TP 4
TP 5