Drive System Pump Disassembly/Assembly - Nilfisk-Advance RS 501 Service Manual

DRIVE SYSTEM PUMP DISASSEMBLY/ASSEMBLY

CAUTION!
This procedure must be performed with the hopper (3) fully retracted.
CAUTION!
If necessary, remove the bonded sealing washers and replace them.
1. Remove the suction inlet (see the procedure in the relevant paragraph).
2. Mark the position of the hoses connected to the fi ttings (A) of the drive system pump (B) and of the suction fan pump (C) (for
proper reassembly).
3. Disconnect the hoses from the fi ttings (A) of the drive system pump (B) and of the suction fan pump (C), then plug them
immediately. Collect the hydraulic system oil that comes out of the hoses before plugging them.
WARNING!
Hydraulic system oil is highly corrosive, wear rubber gloves.
4. Remove the screws (E), then remove the pumps (B) and (C) with the relevant joints.
5. If necessary, remove the drive system pump fi ttings at the workbench.
If necessary, remove the screws (E), then remove the suction fan pump (C) with the joint (F) and the relevant fasteners.
6. Assemble the components in the reverse order of disassembly.
7. Start the machine, use the drive system and activate the suction fan, then stop the machine, check the hydraulic system oil
level and, if necessary, top up (as shown in the User Manual).
8. Check the hydraulic system oil pressure at the drive system pump (see the procedure in the relevant paragraph).
SERVICE MANUAL
A
D B
A
A
RS 501 33015500(3)2008-02
ENGLISH
HYDRAULIC SYSTEM
A
A
F
121
E
C
S301425