ar4725d0004a

Remove/install check valve

Type ar · topic 47.25 · version 0104 · 2004-04-15

Applies to: ENGINE 111.979 in MODEL 902.061 /062, 903.061 /062 /063, 904.062 /063, 902.012 /072, 903.012 /013 /022 /072 /073, 904.012 /013 with CODE (MS7) NGT (Natural Gas Transporter) sprinter ENGINE 111.984 in MODEL 902.661 /662, 903.661 /662 /663, 904.662 /663, 902.612 /672, 903.612 /613 /622 /672 /673, 904.612 /613 with CODE (MS7) NGT (Natural Gas Transporter) sprinter

Where it sits

Function group 1 Engine › 47 Fuel system, powertrain energy supply › 47.25 Lines, hoses — Series 902 (models 012, 061, 062, 072, 612, 661, 662, 672) · Series 903 (models 012, 013, 022, 061, 062, 063, 072, 073, 612, 613, 622, 661, 662, 663, 672, 673) · Series 904 (models 012, 013, 062, 063, 612, 613, 662, 663)

EinPAS 16 Fuel/power supply to engine › 16.10 Fuel supply › 16.10.13 Line/hose/valve — Series 902 (models 012, 061, 062, 072, 612, 661, 662, 672) · Series 903 (models 012, 013, 022, 061, 062, 063, 072, 073, 612, 613, 622, 661, 662, 663, 672, 673) · Series 904 (models 012, 013, 062, 063, 612, 613, 662, 663)

Also applies to engines/gearboxes: 111 979, 111 984

AR47.25-D-0004A

Remove/install check valve

30.6.98

ENGINE 111.979 in MODEL 902.061 /062, 903.061 /062 /063, 904.062 /063, 902.012 /072, 903.012 /013 /022 /072 /073, 904.012 /013 with CODE (MS7) NGT (Natural Gas Transporter) sprinter

ENGINE 111.984 in MODEL 902.661 /662, 903.661 /662 /663, 904.662 /663, 902.612 /672, 903.612 /613 /622 /672 /673, 904.612 /613 with CODE (MS7) NGT (Natural Gas Transporter) sprinter

Remove/install check valve

D47.25-0007-09

Illustration shows Sprinter prior to 2/2000

Components by analogy for Sprinter as of 2/2000

1 Clip

2 High pressure line (to the filling connection)

4 Check valve

3 High-pressure line (to distributor block)

Remove/Install

Danger!

Risk of explosion. When working on natural-gas vehicles, escaping natural gas or an overheated compressed-gas tank may result in explosion. Risk of frostbite to body parts from escaping natural gas or contact with components near the valves while draining the compressed-gas tanks. Risk of poisoning or risk of suffocation from inhaling natural gas.

Remove any sources of ignition.

Ensure that the work area is adequately ventilated.

Wear heat-protective gloves.

AS00.00-Z-0018-01A

1

Close gas shutoff valves at compressed-gas tanks

AR47.10-D-0005A

Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns while working in the engine during the starting procedure or when the engine is running

Secure the vehicle to prevent it from starting on its own.
Wear closed and snug-fitting work clothes.
Do not grasp hot or rotating parts.

AS00.00-Z-0005-01A

2

Start the engine and allow it to run with the vehicle stationary until the engine stops on its own.

Push extraction hose onto exhaust pipe. After engine has stopped, switch ignition off. Gas system is adequately emptied after engine stops.

3

Take off clamp (1)

4

Detach high-pressure lines (2, 3) at check valve (4) and take out check valve

Installation: Install the check valve in such a way that the arrow points towards the front to the distributor block.

Installation: Tighten the threaded connections of the pipe as instructed.

AR47.25-D-0005A

5

Install in the reverse order

6

Inspect high-pressure line connections (2, 3) for leaks

Moisten the connections all round with soapy suds. Briefly refuel vehicle and inspect for formation of bubbles.

Referenced documents