Remove/Install Timing Chain Slide Rail - AR05.10-P-8480MFG

Engine 139 in model 118, 177, 247 

Courtesy of MERCEDES-BENZ USA

	Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers.	AS18.00-Z-0001-01A
	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
Topical note	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove/install
1	Remove the chain tensioner.		AR05.10-P-7800MFG
2	Remove the timing case cover.		AR01.40-P-8000MFG
3	Remove bearing pin (2).	Bearing pin, slide rail	*BA05.10-P-1004-01W
4	Slightly lift timing chain (3) and remove lower slide rail (1).	Replace lower slide rail (1).
5	Remove bearing pin (5).	Replace bearing pin (5).
		Puller	Fig 1
6	Slightly lift timing chain (3) and remove upper slide rail (4).	Replace upper slide rail (4).
7	Check timing chain (3) for damage and wear.	If damage was detected: ↓ Replace timing chain (3).	AR05.10-P-7602MFG
8	Install in the reverse order.

TIMING CHAIN, CHAIN TENSIONER

Number	Designation		Engine 139
BA05.10-P-1004-01W	Bearing pin, slide rail	Nm	25

Fig 1: Identifying Puller (605 589 00 33 00)

Courtesy of MERCEDES-BENZ USA