Removing and installing tensioning rail

M 6 x 50 bolt for impact extractor

Conventional tools

Connection 3/4″ square socket to 1/2″ square head

e.g. made by Hazet, order no. 1058 R-1

D-5630 Remscheid

05—330 Removing and installing tensioning rail

Tightening torques


	Expansion bolt for camshaft sprocket	80
	Valve adjusting screw	20-40
	Cylinder head cover capped nuts and bolts	5
	Balance disc to cranskhaft	400 + 50
	Pulley and vibration damper to balance disc	35
	Ball locating ring in chain tensioner	25
	Special tools

Torque wrench 150—500 Nm (15—50 kpm) 3/4″ square

001 589 31 21 00

Holder

110 589 00 40 00

Socket 27 mm, 1/2″ square for rotating engine

001 589 65 09 00

Depressor for valve spring

110 589 04 61 00

Puller for bearing bolt (basic unit)

115 589 20 33 00

M 8 x 30 bolt for extractor

115 589 00 34 00

Wrench socket 10 mm 1/2″ square, 140 mm long

000 589 05 07 00

Valve adjusting wrench 17 mm

110 589 01 01 00

Chain tensioner holder

110 589 02 31 00

05.2-330/1 F3

Impact extractor for bearing pin (basic unit)

116 589 20 33 00

Note

A 1st version tensioning rail (A) can be replaced by a 2nd version tensioning rail (B).

1OS-12452

Removal

1 Remove radiator (20-240).

2 Remove rocker arms of right camshaft (exhaust) (05-230).

05.2-330/2 F2



	3 Position engine at ignition TDC.

	4 Remove vibration damper (03—340). Remove balance disc without bore to extract the tensioning rail bearing pin (03-340).

	5 Remove chain tensioner (05—310). 6 Mark relation of left and right camshaft sprockets and timing chain with paint, and remove right camshaft sprocket (1).
	Chain drive 1 Exhaust camshaft sprocket 7 2—2b Sliding rails 8 3 Intake camshaft sprocket 9 4 Guide wheel 10 5 Lock screw 11 6 Intermediate wheel	Timing chain Crankshaft sprocket Bearing pin tensioning rail Tensioning rail Hydraulic chain tensioner

	05.2-330/3 F3



	7 Remove sliding rail in camshaft housing.

	8 Pull out tensioning rail bearing pin with extractor.

	9 Remove tensioning rail upward.

	Installation
	10 Guide in tensioning rail. Coat bearing pin with a sealing compound and knock in.

	05.2-330/4 F2



	11 Install righthand camshaft sprocket, while paying attention to color symbol on camshaft sprocket and timing chain. Marks on camshaft sprockets and camshaft housing must align when engine is set at TDC position.

	12 Insall sliding rail in camshaft housing (05—340). 13 Set chain tensioner at assembly position and install (05-310). 14 Install balance disc and vibration damper (03-314). 15 Install rocker arms (05-230). 16 Install radiator.

	05.2-330/5 F2