Poweramp VH SERIES HYDRAULIC - Manual (Page 27)

25 4111-0002 — January 2012 25
MAINTENANCE
Regular maintenance must be performed on a weekly
and quarterly schedule.
Weekly Maintenance
• Operate the dock leveler through the complete
operating cycle to maintain lubrication.
NOTE: To thoroughly inspect the platform hinge
area, put the platform in the full below-dock
position.
• Inspect the platform hinge and the lip hinge areas.
The hinge areas must be kept free of dirt and
debris. Build-up of foreign material in the hinge
areas will cause abnormal operation.
Quarterly Maintenance
• Lubricate the following areas with light weight
machine oil:
(A)— Lip hinge area unless equipped with grease
fittings (apply oil to the top of the entire
length of lip hinge when platform is at the full
below-dock position and lip is folded)
(C)— Platform hinge area (apply oil to top of all
platform hinges when platform is at the full
below-dock position)
(E)— Platform cylinder-to-platform frame pin
(F)— Lip cylinder-to-platform frame pin
(G)— Lip lifter and lift cylinder pin
• Lubricate the following areas with white lithium
grease:
(B)— Valve lever pivot and top of logic block spool
valve.
(D) — All platform cylinder trunnions
NOTE: Apply grease to lip hinge grease fittings if
equipped.
• Check reservoir fluid level (Q):
1. Put the dock leveler platform at the full above-
dock position.
2. Turn OFF all electrical power to the leveler.
4. Remove breather cap (P).
5. Measure fluid level. The fluid level should be
approximately 3 in. (76.5 mm) (N) from top
of reservoir (M) with platform raised on the
maintenance prop.
6. Add hydraulic fluid if necessary. Use only
recommended fluid.
7. Install breather cap and inspection plate.
8. Turn ON electrical power to the leveler.
9. Return the platform to the cross-traffic position.
Before performing any maintenance under the
dock leveler, lock the electrical power source in
OFF position and lock the maintenance prop in the
service position using an approved locking device.
(See Service Dock Leveler Safely in this section.)
Failure to follow these instructions may result in
serious personal injury or death.
M - Reservoir P - Breather Cap
N- 3 in. (76.5mm) From Top of
Reservoir Q - Fluid Level
IMPORTANT
Failure to properly lubricate the dock leveler will
cause abnormal operation of the leveler.
IMPORTANT
A low fluid level or the use of hydraulic fluids not
equivalent to the fluid types recommended, will
cause abnormal operation of the leveler and WILL
void warranty.
M
N
Q P