05-0005 Technical data
Valve springs
Spring force at pretensioned length | |
Part no. | Colour coding | Outer dia. mm | Wire dia. mm | Length un- tensioned mm | Length pre- tensioned mm | When new N | Limit N |
601 053 01 20 (1st Version) | yellow/green or violet/green | 33,2 | 4,25 | 50,8 | 27 | 710 - 790 | 648 |
601 053 03 20 (2nd Version) | yellow/blue or violet/blue | 33,1 | 4,20 | 50,0 | 27 | 680 - 740 | 612 |
Valve guides (grey cast iron)
Version | Outer dia. (D) in mm | Colour coding | Basic bore dia. in cylinder head (a) in mm | Overlap (D-a) in mm | Valve guide inner dia. (A) in mm | Length | |
Inlet | Repair size 1 | 14,240 14,251 | red | 14,200 14,211 | 0,029 0,051 | 8,000 8,030 | 39,5 |
Repair size 2 | 14,440 14,451 | white | 14,400 14,411 | ||||
Exhaust | Repair size 1 | 14,240 14,251 | red | 14,200 14,211 | 0,029 0,051 | 9,000 9,050 | 37,7 |
Repair size 2 | 14,440 14,451 | white | 14,400 14,411 | ||||
Valve seat rings
Inlet | Exhaust | ||
Height (A min) (cylinder head contact surface - cylinder head cover contact surface) in mm | 142,5 | 142,5 | |
Height (B min) (cylinder head cover contact surface - seat of valve seat ring) in mm | 133,4 | 133,4 | |
Outer dia. of valve seat ring (D) in mm | Standard size | 40,100 40,084 | 37,100 37,084 |
Repair size | 40,600 40,584 | 37,600 37,584 | |
Inner dia. of valve seat ring (D1) in mm | 33,400 33,600 | 30,400 30,600 | |
Basic bore dia. (D2) in mm | Standard size | 40,000 40,016 | 37,000 37,016 |
Repair size | 40,500 40,516 | 37,500 37,516 | |
Overlap (U) of valve seat rings in cylinder head in mm (U=DD2) | 0,068 0,100 | 0,068 0,100 | |
Height of valve seat ring (H) in mm | Standard size | 6,955 7,045 | 6,955 7,045 |
Repair size | 7,255 7,345 | 7,255 7,345 | |
Valve seats
Inlet | Exhaust | ||
Valve stands back (a) in mm | 0,1 - 0,7 | 0,1 - 0,7 | |
Valve seat width (b) in mm | 1,2 - 1,7 | 1,5 - 2,0 | |
Valve seat angle (a) in ° | 45 | 45 | |
Valve seat angle (b) in ° | 65 | 65 | |
Permissible radial runout in mm | 0,03 | 0,03 | |
Valve length (l) in mm | Standard | 106,60 106,20 | 106,60 106,20 |
Repair | 105,70 105,30 | 105,70 105,30 | |
Valves
Inlet valve | Exhaust valve | ||
Engine | OM 601/602 | OM 601/602 | |
Valve disc dia. (d) in mm | 37,90 38,10 | 34,90 35,10 | |
Height (h) of valve disc in mm | 1,7 | 1,7 | |
Setting angle (a) for machining valve in ° | 45 | 45 | |
Valve stem diameter (d 1) in mm | 7,970 7,955 | 8,960 8,945 | |
Valve length (l) in mm | Standard | 106,60 106,20 | 106,60 106,20 |
Repair | 105,70 105,30 | 105,70 105,30 | |
Width of valve seat (b) in mm | 2,0 | 2,0 | |
Maximum permissible runout at valve stem and valve seat in mm | 0,03 | 0,03 | |
Matching valves
Cramshaft pitch circle dia. (w)=38,0 0,2 mm | Cramshaft pitch circle dia. (w)=37,6 0,2 mm | Valve to be used | |
Size (x) in mm | 19,5 - 20,3 | 19,5 - 20,1 | Use machined valve (l= 105,50,2 mm), if necessary new repair valve (l= 105,50,2 mm) |
Size (x) in mm | 20,4 - 21,4 | 20,2 - 21,2 | Use installed valve |
Size (x) in mm | 21,4 - 21,97 | 21,2 - 21,97 | Use standard size valve (l=106,40,2 mm) |
Valve timing
Engine | Condition of camshaft | Inlet valve | Inlet valve | Exhaust valve | Auslaßventil |
opens ATDC | closes ABDC | opens ATDC | closes ABDC | ||
|
601/602 |
new |
11° |
17° |
28° |
15° |
used approx. 20000 km |
12° |
18° |
27° |
14° | |
Tightening torques Nm
Hexagon bolt (cylinder head cover to cylinder head) | 10 |
Copper hexagon nut (exhaust manifold to cylinder head) | 25 |
Stay bolt in cylinder head (exhaust manifold) | 12 |
Hexagon bolt (camshaft bearing cap) Pay attention to slackening and tightening diagrams (see page 5) | 25 |
Twelve-sided stretch bolt M 11 (camshaft sprocket to camshaft) | 25 + 90 ° angle of rotation |
Hexagon bolt M 10 (camshaft sprocket to camshaft) | 65 |
Hexagon bolt (oil filler neck to cylinder head) | 10 |
Chain tensioner | 65 |
Hexagon bolt (damper of poly V-belt tensioning device to cylinder head) | 23 |
Hexagon socket bolt (guide pulley to guide pulley bracket) | 23 |
Slackening and tightening diagrams of camshaft bearing caps
Slackening instruction (OM 601):
1 Remove camshaft bearing caps 1, 3 and 5 (dark arrows).
2 Slacken each of the hexagon bolts of the camshaft bearing caps 2 and 4 (light arrows) one revolution in stages until the counter-pressure is eliminated.
Tightening specification (OM 601):
1 Tighten the hexagon bolts of the camshaft bearing caps 2 and 4 (light arrows) one revolution in stages, 25 Nm.
2 Tighten the hexagon bolts of the camshaft bearing caps 1, 3 and 5 (dark arrows), 25 Nm.
Slackening specification (OM 602):
1 Remove camshaft bearing caps 1, 2 and 6 (dark arrows).
2 Slacken each of the hexagon bolts of the camshaft bearing caps 3, 4 and 5 (light arrows) one revolution in stages until the counter-pressure is eliminated.
Tightening specification (OM 602):
1 Tighten the hexagon bolts of the camshaft bearing caps 3, 4 and 5 (light arrows) one revolution in stages, 25 Nm.
2 Tighten the hexagon bolts of the camshaft bearing caps 1, 2 and 6 (dark arrows), 25 Nm.