83 - 2
Drivehead, SD70 - Dismantling
The numerical sequence shown on the illustration is
intended as a guide to dismantling.
For assembly the sequence should be reversed.
1
Drain the oil from the axle centre casing. Remove the
propshaft from the gearbox to the front axle.
2
Remove both hub assemblies complete with
driveshafts (see
Hub and Driveshaft Dismantling
).
3
Mark the installation position of the drive head carrier,
item
2
.
4
Remove the drive head carrier retaining bolts, item
1
,
and remove the drive head carrier
2
from the axle
casing.
5
Clean the drive head carrier and axle casing mating
faces.
6
Pull out tension pins
3
and
4
, and remove castellated
nuts
5
and
6
.
7
Remove bearing outer races
7
and
8
.
8
Drive off the taper roller bearing cone
9
from the
crownwheel differential case half.
9
Remove the differential assembly
10
from the carrier.
10
Remove the differential assembly retaining bolts
11
and
separate case halves
12
and
13.
11
Remove the differential side gears and thrust washers
14
and
15
respectively (2 off each).
12
Remove planet gears and thrust washers
16
and
17
respectively (4 off each) from trunnion pins
B
.
13
Pull off taper roller bearing cone
18
from differential
case half
12.
14
Remove ' verbus ripp' bolts
19
and separate the
crownwheel
20
from the differential case half
13.
15
Mark the position of the drive yoke on the splined shaft.
Use service tool 892/00812 to prevent drive yoke
23
from rotating and remove pinion nut
22
. Remove the
drive yoke.
16
Press the pinion
24
from the drive head carrier
2
.
17
Withdraw the pinion oil seal
25
and taper roller bearing
cone
26
. If necessary, remove bearing outer race
27.
18
If necessary, drive out the pinion bearing outer race
28
and shim(s)
29
from inner side of the drive head carrier.
19
Remove the spacer
30
and taper roller bearing cone
31
from pinion
24.
Section F
9803/3280
Section F
83 - 2
Issue 1
Front Axle - SD70
