Nilfisk-Advance America RS 501 User Manual
SERVICE MANUAL
ENGLISH
RS 501
33015500(3)2008-02
115
HYDRAULIC SYSTEM
ACCESSORY SYSTEM CONTROL VALVE ASSEMBLY REMOVAL/INSTALLATION
CAUTION!
This procedure must be performed with the hopper (3) fully lowered.
This procedure must be performed with the hopper (3) fully lowered.
CAUTION!
If necessary, remove the bonded sealing washers and replace them.
If necessary, remove the bonded sealing washers and replace them.
If necessary, bleed the hydraulic system oil from the tank (see the procedure in the relevant paragraph).
Remove the screws and the right panel (22) on the right side of the cab.
Mark the position of the hoses connected to the accessory system control valve assembly (A) (for proper reassembly).
Disconnect all the hoses from the control valve assembly (A) and plug them immediately.
Remove the screws and the right panel (22) on the right side of the cab.
Mark the position of the hoses connected to the accessory system control valve assembly (A) (for proper reassembly).
Disconnect all the hoses from the control valve assembly (A) and plug them immediately.
WARNING!
Hydraulic system oil is highly corrosive, wear rubber gloves.
Hydraulic system oil is highly corrosive, wear rubber gloves.
Loosen the locknut (C) and remove the levers (B).
Remove the screws (D), then remove the control valve assembly (A).
If necessary, remove the fi ttings and the control valve assembly at the workbench.
Assemble the components in the reverse order of disassembly.
Pour oil in the tank (see the procedure in the relevant paragraph) until the level reaches the MIN mark of the indicator.
Start the machine, use the drive system and lift/lower the hopper a few times. Check that controls (60), (62) and (63) operate
properly. Then stop the machine, check the hydraulic system oil level and, if necessary, top up (as shown in the User Manual).
Check the hydraulic system oil pressure at the accessory and steering system pump (see the procedure in the relevant
paragraph).
Remove the screws (D), then remove the control valve assembly (A).
If necessary, remove the fi ttings and the control valve assembly at the workbench.
Assemble the components in the reverse order of disassembly.
Pour oil in the tank (see the procedure in the relevant paragraph) until the level reaches the MIN mark of the indicator.
Start the machine, use the drive system and lift/lower the hopper a few times. Check that controls (60), (62) and (63) operate
properly. Then stop the machine, check the hydraulic system oil level and, if necessary, top up (as shown in the User Manual).
Check the hydraulic system oil pressure at the accessory and steering system pump (see the procedure in the relevant
paragraph).
B
D
C
A
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