Remove/install hydrogen filler line

AR47.60-P-0070RFW

28.11.2018

Engine

780 in model 253.992/993

P47.60-A030-09

1	Hydrogen filling line	5	Hydrogen filler neck
2	Union nut	6	Line clip
3	Check valve	7	Line bracket
4	Bolts

S7	High-voltage disconnect device

P54.10-4350-10

P54.10-4110-09

 Danger	Risk of explosion caused by escaping hydrogen or overheating of the fuel tanks when working on the hydrogen system. Risk of frostbite to body parts caused by escaping gas and by touching component parts carrying gas when emptying fuel tanks. Risk of asphyxiation caused by inhalation of air diluted by hydrogen. Risk of burn injuries by coming into contact with an invisible pale blue hydrogen flame.		AS00.00-Z-0030-01B
Topical note	Notes on fuel cell system		AH00.00-P-0022-01RFW
	Notes on safety-relevant components		AH00.00-Z-0019-01A
 	Remove/install
1	Release pressure in fuel cell system with vehicle diagnosis system.		AR06.00-P-1001RFW
		If the diagnosis-based pressure release cannot be performed,
		

		Manually release pressure in fuel cell system	AR06.00-P-1000RFW
2	Ensure that the requirements for driving into the workshop are fulfilled.
Topical note	Requirements for driving into the workshop		AH00.00-P-0021-01RFW
3	Print out "tank system, fuel cell, form event log," fill out, and attach to the vehicle somewhere clearly visible.
			OF00.00-P-3000-21RFW
4	Activate high-voltage disconnect device (S7), as shown in picture sequence (A, B, C), and lock it with a shackle-type lock.	 Installation: Carefully connect high-voltage disconnect device (S7), as show in picture sequence (D, E, F). Otherwise the high-voltage disconnect device (S7) will be damaged.
		 For the electrical interruption of the tank components.
		 Keep the key for the shackle-type lock of the high-voltage disconnect device (S7) in a separate location accessible to authorized personnel only.
		 Installation: Check high-voltage disconnect device (S7) for damage.
		If damage is present,
		
		Remove contacts from coupling housing of high-voltage disconnect device (S7) and replace high-voltage disconnect device (S7).
		Remove/install contacts from coupling housing of high-voltage disconnect device.	AR00.19-P-0120-31A
		 New passenger car wiring harness repair kit	*220589049900
		 Unlocker with ejector MLK 1.2_plug	*220589019925
		 Wiring harness repair kit, basic	*000589139900
5	Remove underfloor paneling in the area around the check valve.		AR61.30-P-1001RFW
6	Remove the contact plate on vehicle for fuel pump.		AR47.60-P-0008RFW
7	Unscrew union nut (2) of the hydrogen filling line (1) on the check valve (3).
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
		 Union nut, hydrogen line to filler neck/check valve	*BA47.60-P-1014-01B
8	After 10 s, check if it is free of gas using the gas test device.
	000 588 03 21 00 Gas detector		WS47.00-P-0019B
9	Open the line clip (6).
10	Unscrew screw/bolts (4).	 Bolt, filler neck to bracket	*BA47.60-P-1011-01B
11	Unclip the hydrogen filling line (1) from the line brackets (7).
12	Remove hydrogen filler neck (5) together with the hydrogen filling line (1).	 Do not unscrew the hydrogen filler neck (5) from the hydrogen filling line (1).
13	Seal open lines and connections.	 Set of protective caps	*001589009100
		 Record plug	*129589009100
14	Install in the reverse order.
	Check
15	Perform fuel system leak test.		AR47.60-P-0001RFW