Nilfisk-Advance 7765 Manuale utente

Engine System, Gasoline/LPG 106Service Manual – Advance 7765 / Nilsk CR1500

Engine System, Gasoline/LPG 107Service Manual – Advance 7765 / Nilsk CR1500

Engine System, Gasoline/LPG 108Service Manual – Advance 7765 / Nilsk CR1500

Specications

Engine Specications

3.0 L GM

Engine type Vertical, liquid cooled, four-cylinder, push rod actuated

overhead valve, solid-state distributor

Displacement 181 cubic inches (2966 cc)

Compression Ratio 9.2:1

Fuel Gasoline 87 or 89 octane unleaded gasoline with no more than

10% ethanol by volume

LP 33-lb. tank size with manual shutoff

Spark Plugs AC Delco R45TS, gap .045” [1.14 mm]

Spark Plug Wiring Match numbered coil position to spark plug number (see the

Firing Order and Plug Wire Routing subsection)

Engine Firing Order 1-3-4-2

Ignition Timing 0 degrees BTDC

Engine Rotation CCW(ywheelend)

Valve Lifters Flat follower

Oil Capacity 4qts.[3.79L]withoutoillter

4.5qts.[4.26L]withoillter

Oil Filter PF-25 or equivalent

Minimum Oil

Pressure (Hot)

6 psi [0.41 bar] @ 1000 RPM

18 psi [1.24 bar] @ 2000 RPM

Cooling Capacity 4 qts. [3.79 L] without radiator

12 qts. [11.36 L] with radiator

Engine System, Gasoline/LPG 109Service Manual – Advance 7765 / Nilsk CR1500

Special Tools

Diagnostic Communication Cable and software, p/n 56305647

Cooling System Tool

110Service Manual – Advance 7765 / Nilsk CR1500

Hopper System

Functional Description

Overview

The hopper system holds the dust and debris swept up by the brooms.

There are two different hopper congurations; a manual dump (MD) hopper and a variable dump (VD)

hopper.

• The manual dump hopper is xed. A manual dump lever opens a hopper ap to empty the hopper onto the

oor below the machine. Machines with a manual dump hopper do not have a dust control system.

• The variable dump hopper has a hydraulic cylinder that raises the hopper for emptying into a dumpster

or other receptacle. A second hydraulic cylinder opens and closes the hopper dump door. Machines

equipped with a variable dump hopper are also equipped with a dust control system. The dust control

system includes a hopper lter, dust control motor and impeller, and lter shaker motor. Refer to the

Dust Control System section for more information on the dust control components.

Hopper – Manual Dump Machines

The Manual Dump Hopper is

xed. Moving the Hopper

Dump Handle to the OPEN

position empties the

contents of the Manual

Dump Hopper onto the oor

underneath the machine.

Note that there are no

electrical or hydraulic

components associated

with the Manual Dump

Hopper.

Manual

Dump

Hopper

Dump

Handle

Hopper System 111Service Manual – Advance 7765 / Nilsk CR1500

Hopper – Variable Dump Machines

The Variable Dump

Hopper pivots on the Rod

supported by the frame.

The Hopper Lift Cylinder

swings the Variable Dump

Hopper up to allow it to be

emptied into a dumpster

or other receptacle.

The Hopper Dump Door

Cylinder opens and closes

the Hopper Dump Door.

The Hopper Switch (called

the “Hopper Down Switch”

in the Parts List) closes

when the Variable Dump

Hopper is fully down.

The Hopper Door Switch

(called the “Dump Door

Switch” in the Parts List)

closes when the Hopper

Dump Door is closed.

Rod

Hopper

Switch

Hopper

Door

Switch

Hopper

Dump

Door

Hopper Dump

Door Cylinder

Hopper

Lift

Cylinder

Variable

Dump

Hopper

Hopper System 112Service Manual – Advance 7765 / Nilsk CR1500

The hydraulic valves that control the Hopper Lift Cylinder and Hopper Dump Cylinder are mechanically

actuated by the Hopper Lift Lever and the Hopper Dump Door Lever respectively. Links connect the Hopper Lift

Lever and Hopper Dump Door Lever to the corresponding side of the Hopper Control Valve.

Link

To Upper Port on

Hopper Dump Door Cylinder

To Rear Port on Hopper Lift Cylinder

To Lower Port on Hopper Dump Door Cylinder

To Front Port on Hopper Lift Cylinder

From “T” Port on Main Control Valve

To Rear Oil Cooler

Hopper

Control Valve

Hopper

Lift

Lever

Hopper

Dump Door

Lever

Hopper System 113Service Manual – Advance 7765 / Nilsk CR1500

Hopper System Wiring Diagram – Variable Dump Machine

Electrical Circuit Description – Variable Dump Machine

The only electrical components associated with the hopper system are the Hopper Switch and the Hopper Door

Switch. Both of these “whisker” switches must be closed in order to get positive voltage to the Shaker Motor

Switch, Dust Control Switch, Main Broom Switch and Side Broom Switch.

Hopper Switch Hopper Door Switch

(Held Closed by Hopper) (Held Closed by Door)

B-

Shaker Relay

Dust Control Solenoid (1)

8535 46

1557

Side Broom

Switch

Main Broom

Switch

Dust Control Switch

Option

337

Shaker Motor Switch

Main Broom Solenoid (2)

Side Broom Solenoid (5)

B-

CB6

15 A

137 2C CN.O. N.O.

Battery 12 VDC

Bat. Ignition

Switch

Hopper System 114Service Manual – Advance 7765 / Nilsk CR1500

Hopper System Hydraulic Diagrams – Variable Dump Machine

Hopper Control Valves in Neutral Position

The hydraulic oil ows from the Auxiliary Pump, through non-priority leg of the priority ow divider, then

through the Main Control Valve to the Hopper Control Valve. Note that the oil will take this path regardless of

whether the Main Broom, Dust Control and Scrub Brush Motors are on or off.

When the Hopper Dump Cylinder Valve and Hopper Lift Cylinder Valve are in the neutral position, the oil ows

through the Hopper Control Valve, then through the Oil Cooler, Return Block and Filter to the Reservoir. Note

that the hydraulic lines from the Dump Cylinder and the bottom port on the Lift Cylinder are “deadheaded” in

the Hopper Control Valve to hold the hopper and dump door in position.

Lift Cylinder

Dump Cylinder

To Scrub

Brush Motors

To Main

Broom and Dust

Control Motors

From Main

Broom and Dust

Control Motors

From Scrub

Brush Motors

.75

GPM

Main Control

Valve

1.02

CIR

Return Block

Reservoir

Auxiliary

Pump

Out

Hopper

Control

Valve

Oil

Cooler

Filter

9.7 GPM

Main Broom

Solenoid (2)

Normal Rotation

Brush (4)

Reverse

Rotation

Brush (3)

To Side

Broom

Valve

Hopper Lift

Cylinder Valve

Hopper Dump

Cylinder Valve

To Return

Block

2500

PSI

Relief

Valve

Hopper System 115Service Manual – Advance 7765 / Nilsk CR1500

Lift Hopper

When the hopper lift lever is moved to the “raise” position, the oil ows through the check valve on the

Hopper Lift Cylinder Valve and to the bottom port on the Lift Cylinder to raise the hopper. The oil from the top

port on the Lift Cylinder goes to the return line to the Filter and Reservoir.

Lift Cylinder

Dump Cylinder

To Scrub

Brush Motors

To Main

Broom and Dust

Control Motors

From Main

Broom and Dust

Control Motors

From Scrub

Brush Motors

.75

GPM

Main Control

Valve

1.02

CIR

Return Block

Reservoir

Auxiliary

Pump

Out

Door

Lift

Hopper

Down

Open

Door

Hopper

Control

Valve

Oil

Cooler

Filter

9.7 GPM

Main Broom

Solenoid (2)

Normal Rotation

Brush (4)

Reverse

Rotation

Brush (3)

Hopper Lift

Cylinder Valve

Hopper Dump

Cylinder Valve

To Side

Broom

Valve

To Return

Block

2500

PSI

Relief

Valve

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