48
Genuine OEM Parts 1.800.233.4823 www.morganolsonparts.com
49
USPS 2 Ton Delivery Vehicle 2016 - 2018 Models
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FOR DISTRIBUTION
CONFIDENTIAL
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FOR DISTRIBUTION
Chapter 4 Preventive Maintenance
HYDRAULICS
Inspect for oil leaks in:
Hydraulic cylinder(s)
Hydraulic hoses - Replace hoses if they
show signs of excessive abrasion
Hydraulic fittings and valves
Tighten or replace all hydraulic components
as may be required to stop oil leakage
CHECK AND FILL HYDRAULIC RESERVOIR
Lower platform to ground and remove
access cover.
Remove reservoir breather cap.
Oil level should be 1/2” from top of
reservoir.
If low, fill as required. Use appropriate fluid
per chart.
Replace breather cap.
GR02836
Recommended Fluids
Fill reservoir
Temperature Range
Acceptable Fluids
Fill with recommended fluid or equivalent.
0
to 120
F
Waltco Biodegradable
Liftlube
TM
part #85803860
Fill the reservoir to within 1/2” from the top.
Fluids are available from the Waltco parts
Shell Tellus S2 V 32
Dept. 1-800-411-5685 www.waltco.com
Chevron Rando HDZ 32
-20
to 90
F
Waltco Biodegradable
LiftLube Arctic part
#85803866
NOTE:
Do not use the following fluids:
Waltco All Season Hyd Oil
Part 85803867
Shell Tellus S2 V 15
Mobil DTE 10 Excell 15
Brake Fluid
Power steering fluid
Automatic Transmission Fluid (ATF)
A good quality SAE 10W motor oil may also be used in
temperatures above 32
F.
Rev 06
Breather
Cap
Page 14
PREVENTIVE MAINTENANCE
Chapter 4 Preventive Maintenance
There is no speed adjustment on this
liftgate.
Lowering speed is controlled by the pressure
compensative valve plumbed at the cylinder.
Regardless of weight on platform, liftgate
should lower at approximately six (6) inches
per second.
Bed Height
(inches)
= Lowering Time
(seconds)
6
This liftgate must have the correct
pressure compensative valve
install:
GR00160
INSPECT DECALS AND LUBRICATE
LIFTGATE
Inspect all decals per Chapter 5 of this manual.
Replace any that are missing or damaged.
Lubricate liftgate per Chapter 6 of this manual.
ANNUAL INSPECTION
Inspect power motor:
Disconnect battery cable.
Remove end cover.
Examine armature brushes for wear
(Motor should be replaced if less than
1/8" long).
Clean out all residue from inside of
motor housing.
Apply several drops of light weight
machine oil to armature shaft bearing in
motor end cover.
Reassemble motor.
Drain hydraulic fluid and replace with new fluid
per recommended fluids chart.
GR02836
Pressure
Compensative Flow
Control Valve
Remove cover to
check brushes and
clean out motor
Page 15
PREVENTIVE MAINTENANCE