6
- FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100
MAINTENANCE SCHEDULE
Maintenance intervals given are for average operating conditions. Machines used in severe operational environments may require service more
often.
MAINTENANCE ITEM
Daily
Weekly
Monthly
Yearly
Charge Batteries
•
Check/Clean Tanks & Hoses
•
Check/Clean/Rotate the Brushes/Pads
•
Check/Clean Vacuum Shut-Off Float
•
Check/Clean the vacuum motor foam filter
•
Check/Clean/Adjust the Squeegee
•
•
* Empty Debris Basket/Clean Solution Delivery Trough
•
Check Each Battery Cell(s) Water Level
•
Inspect Scrub Housing Skirts
•
Inspect and clean Solution Filter
•
Check Foot/ Parking Brake for Wear & Adjustment
•
Lubrication - Grease Fittings
•
** Check Carbon Brushes
•
Note: See the individual machine system sections for maintenance information.
* Cylindrical models only.
** Have Nilfisk-Advance:
Check vacuum motor carbon brushes (Qty 2) once a year or after 300 operating hours.
Check brush motor carbon brushes (Qty 4) once a year or after 500 operating hours.
Note if the vacuum or brush motor brushes are 9.5 mm (3/8 inches) or shorter, replace them.
Check wheel drive motor carbon brushes (Qty 4) once a year or every 500 operating hours. The original length of each brush is 30.5 mm (1.2
inches). Replace when shorter than 15.8 mm (5/8 inches) to obtain the same motor efficiency as a new brush. All four brushes must be replaced
at the same time.
WARNING!
Turn the key switch off, set the parking brake and disconnect the battery before servicing the machine.
BATTERIES AND CHARGERS
Attention: See the Electrical System manual section for battery installation and charger system requirements.
WHEEL DRIVE MOTOR GEARCASE OIL CHECK & FILL
The gearbox of the drive unit is originally filled with SAE 85 W oil in the amount of 300 cc (10.16 US fluid ounce). It is recommended that the oil
level be checked once a year or every 3000 hours of operation. It’s also recommended that the oil be replaced every 5000 hours of operation.
This can be performed with the drive unit remaining on the vehicle. Reference Figure 6 in the Wheel Drive System. Rotate wheel whereby the
oil plug located on the Gearbox Cover
(J)
is rotated parallel to the ground (along the horizontal centerline of the motor shaft). After rotation to parallel
position, allow a few moments for the oil to drain to the bottom of the gearbox. Then, remove the oil plug. Check to see if oil flows out of the plug
hole. If no oil flows out, it may be necessary to add a small amount of oil to the gearbox. This oil can be added to gearbox via the plug hole. Pay
careful attention to not over-fill the gearbox.
LUBRICATING THE MACHINE
Once a month, pump a small amount of grease into each grease fitting on the machine until grease seeps out around the bearings.
Grease fitting locations are:
•
Squeegee Caster Wheel Axle & Swivel (2) per Assembly
•
Steering Wheel Shaft Universal joint
•
Chain Tension Sprocket
Once a month, apply light machine oil to lubricate the:
•
Steering Chain
•
Squeegee Height Adjustment Caster Hardware
•
General Pivot Points for the Squeegee & Brush Linkage
MAINTENANCE
revised 10/01
