Douglas Dynamics 77755 Installation Instructions Manual - Page 12

Browse online or download pdf Installation Instructions Manual for Automobile Accessories Douglas Dynamics 77755. Douglas Dynamics 77755 17 pages. Snowplow

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1. Hydraulic Unit

OPERATIONAL TEST AND FINAL ADJUSTMENTS

HYDRAULIC UNIT

WARNING

Keep 8' clear of the blade when it is being

raised, lowered, or angled. Do not stand

between vehicle and blade or directly in front

of the blade. If the blade hits or drops on you,

you could be seriously injured.

The hydraulic unit comes from the factory

preassembled, partially filled, and fully tested.

1. Attach the snowplow to the vehicle according to

the instructions on the back of the blade.

2. Remove the cover from the hydraulic unit. Remove

and discard the factory‑installed pipe plug from

the top of the reservoir and install the breather.

AeroShell

is a registered trademark (

Lit. No. 52238, Rev. 05

Breather

) of Shell Oil Company.

To prevent accidental movement of the blade,

always turn the control OFF whenever the

snowplow is not in use. The power indicator

light will turn OFF.

3. Turn the control ON and raise and lower the

snowplow several times. With the snowplow in the

raised position, fully angle the snowplow from right

to left several times. Activate the control FLOAT

function and make sure the blade is lowered

completely to the ground. Turn the control OFF.

Do not mix different types of hydraulic fluid.

Some fluids are not compatible and may

cause performance problems and product

damage.

4. Remove the breather and check the fluid

level. The fluid level should be 1"–1-1/2" below

the fill hole. If additional fluid is needed, add

SnowEx

Rapid Action Hydraulic Fluid rated

to –40°F (–40°C), or other fluid conforming to

Military Specification MIL-H-5606 A, such as

Mobil Aero HFA or Shell AeroShell

fluid is 1"–1-1/2" below the fill hole.

NOTE: Loosen the breather slowly to relieve any

pressure in the reservoir.

NOTE: Add fluid only when all rams are retracted

and blade is resting fully on the ground.

5. Replace and tighten the breather.

WARNING

CAUTION

Fluid 4 until

July 15, 2020