05-340 Removing and installing guiding blades
Operation No. of operation texts and operation values or standard texts and flat rates 05-8424 |
A. Guiding blade (24) in cylinder head
Preceding work: |
Chain tensioner (39 to 41) | remove, install 70 Nm (step 1). |
Fan shroud (1) and fan (75) | remove, install, bolt (80), 25 Nm (step 2). |
Piston of No. 1 cylinder | position on ignition TDC (step 3). |
Oil pressure pump (69) | unbolt, bolt up, put to one side with lines connected (step 4). |
Timing chain and camshaft timing gear (4) | align and unbolt, bolt (9 and 9a), 80 Nm |
Guiding blade bolt (26) | extract, with impact extractor 116 589 20 33 00 and stud 100 589 00 34 00, drive home Note 001 989 25 20. Note that the fixing nose on the guiding blade engages in the guiding blade bolt (steps 6 and 7). |
When engine is running | check for leaks. |
Special tools
116 589 20 33 00
116 589 20 33 00
115 589 20 33 00
115 589 00 34 00
001 589 66 21 00
001 589 72 21 00
Note
The guiding blades have been changed with the introduction of the double roller chain.
A Guiding blade for single roller chain
B Guiding blade for double roller chain
Removing and installing
-------------------------------
1 Removing and installing chain tensioner
(05-310). Tightening torque of hexagon cap nut
(40) 70 Nm.
2 Remove fan shroud (1) and fan (75). Tightening torque of bolt (80) 25 Nm.
3 Position piston of No. 1 cylinder on ignition TDC.
4 Unscrew oil pressure pump with lines connected (arrows) and put to one side.
5 Align timing chain and camshaft timing gear.
Unscrew camshaft timing gear and remove
sprocket.
Note
When installing the sprocket note colour markings. Tightening torque of fixing bolt
80 Nm.
6 Withdraw both guiding blade bolts (26) with
impact extractor 116 589 20 33 00 and stud
100 589 00 34 00.
Note
If the guiding blade bolts are too tight, the
extractor 115 589 20 33 00 with stud
115 589 00 34 00 can also be used.
Impact extractor in place
7 Fit guiding blade (24) so that the locating lug (arrow) engages in the groove of the upper guiding blade bolt.
Note
Apply sealant 001 989 25 20 at collar of guiding blade bolts.
8 Check for leaks when engine is running.
B. Guiding blade in cylinder crankcase
Preceding work: | Operation No. of operation texts and operation values or standard texts and flat rates 05-8424 |
a. With single roller chain | |
Guiding blade (25a, single roller chain) . | remove, put on (step 1). |
b. With double roller chain | |
Piston of No. 1 cylinder | position on ignition TDC (step 2). |
Oil pressure pump (69) | unbolt, bolt up, put to one side with lines connected (step 3). |
Chain tensioner (36 to 41) | remove, install (05-310). |
Timing chain and camshaft timing gear (4) | align and unbolt, (9 and 9a), 80 Nm (step 5). |
Timing chain and crankshaft gear | align (step 6). |
Bolt (20) | unscrew, remove clip (19) and idler gear shaft (18) (steps 7 and 8). |
Timing chain with crankshaft gear | pull forward as far as possible, remove and fit guiding blade (25b) (step 9). Note |
Idler gear shaft (18) | install, bolt (20), 5 Nm (step 10). |
When engine is running | check for leaks. |
Special tools
001 589 66 21 00
Note
The guiding blades have changed with the introduction of the double roller chain.
A Guiding blade for single roller chain
B Guiding blade for double roller chain
Removing and installing
-------------------------------
a. With single roller chain
1 Pull off guiding blade (25), put on.
b. With double roller chain
2 Position piston of No. 1 cylinder on ignition TDC.
3 Unbolt, bolt up oil pressure pump (arrows) and put to one side with lines connected.
4 Remove chain tensioner (05-310).
5 Align timing chain and camshaft timing gear and unbolt camshaft timing gear. Put timing chain in timing case.
6 Align timing chain and crankshaft gear.
7 Unscrew bolt (20) and remove retaining
clip (19).
8 Pull out idler gear shaft (18) and remove timing chain.
9 Pull timing chain and crankshaft gear forward as far as possible and take off guiding blade (25b), insert. Insert timing chain and push back crankshaft gear together with timing chain.
10 Install idler gear shaft (18), tightening torque of the hexagonal socket screw (20) 5 Nm (reference value).
11 Fit timing chain and camshaft timing gear, note marking. Tightening torque of camshaft timing gear fixing bolt 80 Nm.
12 Fit chain tensioner (05-310). Tightening torque of sealing plug (40), 70 Nm.
13 Check adjustment marking of camshaft (arrow) at ignition TDC position of engine, correct if necessary.
14 Install oil pressure pump, in so doing note driving disc.
15 The installation proceeds in reverse sequence to the removal.
16 Check for leaks when engine is running.