Hydraulic System; Hydraulic Oil; Caster Lubrication; Drive Tire Check - Yale 524150797 Maintenance Manual

Maintenance Procedures Every 350 Hours or Every 2 Months

HYDRAULIC SYSTEM

WARNING
Always wear the proper protective equipment
including eye protection and petroleum-resistant
gloves when handling hydraulic oil. Thoroughly
wash oil from exposed areas of skin as soon as
possible.
Completely lower forks
pressure before disassembling any part of the lift
pump or disconnecting any hydraulic hoses.
The hydraulic oil is hot at normal operating
temperatures. Be careful when draining the oil.
Never check for leaks by putting hands on
hydraulic lines or components under pressure.
Hydraulic oil under pressure can be injected into
the skin.
CAUTION
Protect the hydraulic system from dirt and
contaminants when
system.
Never operate the pump without the proper
amount of oil in the hydraulic system. The
operation of the hydraulic pump with low oil levels
will damage the pump.
Perform the following check.

Hydraulic Oil

NOTE: The hydraulic oil should be changed after the
initial 350 hour break-in period and then every 2000
hours thereafter. Refer to Maintenance Procedures
Every 2000 Hours or Yearly for oil change procedures
for the initial 500 hour change.
Check the hydraulic oil level when the oil is at normal
operating temperature and forks are in the lowered
position.
Remove drive unit cover. Remove breather cap from
hydraulic pump and reservoir. Add hydraulic oil, if
necessary, through the breather filler pipe until oil is at
Full mark on reservoir. Install breather cap and tighten.
DO NOT OVERFILL.
14
to relieve hydraulic
servicing the hydraulic

CASTER LUBRICATION

CAUTION
Use only the recommended lubricants for your
application. Refer to Capacities and Specifications
8000YRM1511 for lubrication specifications for
your lift truck.
Wipe grease fittings clean before greasing.
NOTE: Some optional packages may utilize sealed
bearings or different grease fitting configurations.
Contact your Yale dealer for information on optional
packages.
The casters should be lubricated every 350 hours or 2
Months during normal operation. The caster has one
grease fitting in the top plate to lubricate the swivel
bearing. See Figure 8.
1. SWIVEL MOUNT
2. CASTER WHEEL
3. ADJUSTER
Figure 8. Heavy-Duty Caster

DRIVE TIRE CHECK

WARNING
When the drive tire has been installed, check all
wheel bolts after 2 to 5 hours of operation. When
the wheel bolts stay tight after an 8-hour check,
the interval for checking the torque can be
extended to 350 hours.
Check to ensure the wheel bolts or lug nuts are
properly tightened to 120 N•m (88 lbf ft). Inspect the
8000 YRM 1666