Removing and installing check valve - AR83.70-P-6015C

MODEL 129 as of 1.6.97 with CODE (228) Stationary heater 

Fig 1: Identifying Check Valve Components

	Removal, installation
1	Pull off rubber seal (2)
2	Disconnect vacuum line (3) from brake unit
	Danger  of severe burns to skin and eyes from hot coolant spewing out. Coolant is toxic  when swallowed	Open cooling system only when coolant temperature is below 90°C. Open cover slowly and reduce pressure. Do not fill beverage containers with coolant. Wear protective gloves, protective clothing and protective goggles	AS20.00-Z-0001-01A
3	Release pressure in coolant circuit	For this purpose turn cap on coolant expansion reservoir to catch position 1
4	Clamp off coolant lines (5) upstream and downstream of check valve (1)		Figure
5	Disconnect coolant lines (5) from check valve	Installation  : Observe flow direction of coolant. The arrow points in the flow direction
6	Install in opposite order
7	Bleed coolant circuit after installing heater		AR83.70-P-5302-01C
8	Stationary heater diagnosis Check for proper function		AD83.70-P-3003A
9	Check coolant circuit for leakage		ra20001190170x

Fig 2: Identifying Clamp (000 589 54 37 00)