Removing/installing the chain tensioner · ar0510l7800a · Mercedes-Benz WIS

AR05.10-L-7800A

Removing/installing the chain tensioner

26.7.99

ENGINE 602.984 in MODELS 667, 668, 670

D05.10-0014-06

1 Chain tensioner

2 Sealing ring

P05.10-0004-04

225 Screw plug

226 Aluminium gasket A2530

227 Ball 5 mm 

228 Ball guide

229 Compression spring

230 Compression spring

231 Valve disk

232 O-ring

233 Thrust pin

233a Filler piece

234 Compression spring

235 Housing

236 Snap ring B16

a Feed bore from cylinder head

b to the oil pan

Figure item, etc.	Work instructions
2	Remove chain tensioner completely	 Installation: Only replace the chain tensioner as a complete unit. Replace sealing ring (8). Before installing, fill chain tensioner with engine oil. Position chain tensioner with thrust pin facing down in engine oil until it is over the collar on the hexagon. Use a press or column drill to slowly depress thrust pin fully 7 - 10 times.
		 After filling, it must be possible to compress the chain tensioner only quite slowly, evenly and with considerable force.
			*BA05.10-N-1001-01B

 Timing chain drive

Number	Designation		Engines 602.982/ 983/984/ 985


BA05.10-N-1001-01B	Chain tensioner in cylinder head	Nm	80