jcb 214e Service Manual page 684

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Section F
82 - 6
Drive Head - Assembly (cont'd)
9 To select the right size spacer 24, subtract the end float
obtained at step 7 from the solid spacer size (14.20
mm). Also subtract 0.04 mm to allow for theoretical
bearing tolerance and pre load. The result is the size of
spacer to be fitted from the solid spacer setting kit. If
there is no spacer of this size, fit the next nearest size
spacer, refer to Service Tools - Axles.
Example
Temporary spacer size
Subtract end-float
Total
Subtract tolerance & preload
Result
(No spacer available this size, use next nearest size
spacer i.e 13.900)
10 Remove sleeve B and temporary spacer. fit correct size
spacer from solid spacer setting kit, refer to Service
Tools - Axles. During removal take care to avoid
damaging the outer bearing.
11 Fit sleeve B. Tighten adapter C to no more than 50 Nm
to protect against bearing damage while spacer
selection is verified making sure the pinion is free to
rotate. Check there is no end float and pinion is free to
turn smoothly by hand. Remove adapter C and fit nut
16. Then check that rolling torque is less than 2.0 Nm. If
the rolling torque exceeds 2.0 Nm, check that the shaft
has been assembled correctly.
Note: If the pinion is not free to rotate check the correct size
spacer has been fitted.
12 If rolling torque measured at step 10 is too high, fit the
next larger size spacer. If rolling torque is too low, fit
the next smallest size spacer. If a correct spacer is not
available from the range, check that drive head is
assembled correctly.
13 Remove adapter C and sleeve B. Fit new oil seal 19,
grease between seal lips before fitting. Fit coupling
yoke 18 and NEW stake nut 16.
14 Progressively torque tighten stake nut 16, occasionally
rotating coupling yoke, up to 250 Nm. Providing the
correct size spacer has been selected the rolling torque
should be between 2.3 and 3.4 Nm including seal drag.
Note: The nut tightening torque can be increased to a
maximum of 300 Nm provided that the pinion rolling torque
does not exceed the maximum of 3.4 Nm.
15 Finally stake the nut 16 into the slot.
9803/3280
Transmission
Front Axle - SD55
14.20
0.25
13.95
0.04
13.91
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16 Assemble the trunnion pin 11, bevel gears 9 and 10 and
their thrust washers 12 and 13 into differential half case
8A.
17 Position differential half case 8B onto half case 8A,
aligning the match-mark
Threadlocker and Sealer to the threads of bolts 7, then
fit and torque tighten to 46 Nm (34 lbf ft, 4.7 kgf m).
Check the gears for free rotation.
Fit crownwheel 15 using new Verbus Ripp bolts 14
18
tightened to 94 Nm (69 lbf ft, 9.59 kgf m).
19 Locate crownwheel assembly (without bearings) into
housing.
20 Drive bearing cones 5 and 6 onto differential case
spigots. Lightly oil the bearings then fit their bearing
cups and castellated nuts 4 into drive head carrier 2.
Do not fit the roll pins 3 at this stage.
21 Adjust castellated nuts 4 to give an increase in input
pinion rolling torque of between 1.36 - 2.5 Nm (12 - 22
lbf in) more than that recorded in Step 13.
22 Measure the backlash between crownwheel 15 and
pinion 20, which should be 0.17 - 0.28 mm (0.006 -
0.010 in). Adjust castellated nuts 4 by equal amounts
when altering backlash. When backlash and preload
are both correct, fit roll pins 3.
23 Check tooth marking to verify crownwheel and pinion
are set correctly, refer to Crownwheel and Pinion
Meshing.
Apply JCB Multigasket to the mating faces of drive
24
head carrier 2 and the axle casing. Fit the drive head
carrier to the axle casing with the crownwheel towards
the short drive shaft. Fit securing bolts 1 and tighten to
98 Nm (72 lbf ft, 10 kgf m).
25 Reassemble both driveshafts and hub assemblies, refer
to Axle Hub and Driveshaft - Dismantling and
Assembly.
26 Re-fill the hubs and differential with the correct grade of
oil, refer to Section 3 Lubricants and Capacities.
27 Refit the propshaft, refer to Propshafts - Removing
and Replacing.
Section F
82 - 6
letters. Apply JCB
Issue 1