Technical data

65
70 ± 7 Nm
(7 ± 0.7 Nm)
33 ±4 Nm
(3.3 ±0.4 Nm)
Repair instructions
Timing gear, assembly
Special tools: 884948, 884949
IMPORTANT! All gear wheels in the timing gear
which are important for timing are marked with a
centre punch mark on the relevant gear tooth or
tooth gap. Also, please note the instructions for
installing nitrocarburised gears on page 64.
Tightening torque for timing gear.
2
Check that the camshaft drive gear dowel is installed.
Install the camshaft drive gear.
Tightening torque is 70 Nm (7 kpm)
Tightening torque for timing gears.
Check that the crankshaft key is installed and is cor-
rectly seated in the groove.
Install the crankshaft gear with tool no. 884948.
NOTE! Make sure that the teeth are correctly engaged
in the oil pump drive gear.
1
33 ±4 Nm
(3.3 ±0.4 Nm)
70 ±7 Nm
(7 ±0.7 Nm)
90 ±9 Nm
(9 ±0.9
Nm)
3
Set the crankshaft up with the no. 1 piston at TDC
(crankshaft key straight up).
Install the idler gear in accordance with the markings.
The thrust washer is positioned as in illustration (A).
4
Check that the dowel is installed in the injector pump
shaft (not TAMD63, TAMD72) and install the pump
gear. Check that the markings on the gears coincide.
Note. The injection pump drive gear on the TAMD63
and TAMD72 does not have markings against the idler
gear.
5
Check that there are no marks of seizure on the cam-
shaft nose and the polygon hub. Polish off any marks
with emery cloth.
Remove the old seal ring for the polygon hub.
Clean the seal ring mating surface.
Please refer to item 2 of “Seal ring, polygon hub” on
page 66 for instructions about installing the seal ring.