
TS, TR, TX engines workshop manual
43
5. Using a fuel pump securing bolt remove each centre bearing
dowel (B).
Leave the bolt in the dowel until it is refitted to ensure the
dowel is fitted the correct way round.
6. Remove the crankshaft balance weights.
7. Gently withdraw the crankshaft through the flywheel end
of the crankcase.
8. Remove the two socket screws and dismantle the centre
bearing housing/s.
9. Remove the gear end thrust washers.
Servicing the Crankshaft
a. Inspect the main bearings for scoring or wear.
If necessary, the bearings can be removed and replaced using
either Service Tool 393235 or 317-50006 as described in "02.47
Crankshaft Main Bearings".
b. If the connecting rod big end has been dismantled because of
failure of the bearing, the oil passages in the crankshaft must
also be examined for obstruction and fragments of metal.
c. Check the clearance between the crankshaft and journals,
the main bearings and crankpins and also the connecting
rod bearings.
d. Examine all bearing surfaces for scoring and wear.
e. Renew the split thrust washers if they are damaged or
worn.
Refitting the Crankshaft
1. If necessary fit new bearing shells to the main bearing
housing, centre bearing housing/s and the gear end
crankcase main bearing.
The grooved bearing shell must be to the top and the oil
holes must be lined up.
2. Re-assemble the centre main bearing housing/s around the
crankshaft ensuring the socket screws are tightened.
Ensure 'Flywheel End' on the housing halves is correctly
located before assembly.
3. Apply grease to the steel side of the thrust washers and place
them in the gear end of the crankcase with the tab correctly
located and the copper face towards the crankshaft.
4. Offer up the crankshaft, lining up the centre bearing to ensure
each dowel hole is in the correct position.
Take special care when passing the crankshaft through the
gear end bearing as it is quite easy to score the bearing shell
with the crankshaft.
5. With the fuel pump bolt inserted in the centre bearing dowel
(B), insert the dowel through the crankcase wall and into the
centre bearing housing.
T SERIES ENGINES WORKSHOP MANUAL
47
also the connecting rod bearings.
d.Examine all bearing surfaces for scoring and
wear.
e.Renew the split thrust washers if they are
damaged or worn.
Refitting the Crankshaft
1.If necessary fit new bearing shells to the main
bearing housing, centre bearing housing/s and
the gear end crankcase main bearing.
The grooved bearing shell must be to the top and
the oil holes must be lined up.
2.Re-assemble the centre main bearing housing/s
around the crankshaft ensuring the socket screws
are tightened.
Ensure 'Flywheel End' on the housing halves is
correctly located before assembly.
3.Apply grease to the steel side of the thrust
washers and place them in the gear end of the
crankcase with the tab correctly located and the
copper face towards the crankshaft.
4.Offer up the crankshaft, lining up the centre
bearing to ensure each dowel hole is in the
correct position.
Take special care when passing the crankshaft
through the gear end bearing as it is quite easy to
score the bearing shell with the crankshaft.
5.With the fuel pump bolt inserted in the centre
bearing dowel (B), insert the dowel through
the crankcase wall and into the centre bearing
housing.
Figure 2.44.3 Centre Bearing Dowel
CAUTION
Ensure the dowel has gone fully home and
that it is not abutting the main bearing housing
shoulder or capscrew recess.
Figure 2.44.4 Dowel Hole Alignment
A - Dowel Hole
B - Capscrew Head Recess
6.Replace the locating dowel securing screw and
torque load it to 20.5Nm (15.0lbf ft).
7.Remove the fuel pump bolt from the dowel.
8.Refit the crankshaft balance weights, with the
stamped part numbers facing each other, and
torque load to 57.0Nm (42.0lbf ft).
Early balance weights only have one retaining
screw.
9.Lock the bolts by preening them with a centre
punch.
10.Replace the rear main bearing housing.
11.Check that the crankshaft is free to rotate.
12.Fit the Woodruff key at the gear end.
13.Heat the crankshaft pinion to straw yellow and
fit it to the crankshaft without delay ensuring the
'0' mark is facing outwards.
Insufficient heat or delay in fitting could well
cause the pinion to become jammed on the
crankshaft, whereas overheating may cause
softening of the pinion.
14.Check the crankshaft end float.
2.45 CRANKSHAFT END FLOAT
1.Set a dial test indicator so that the actuating
plunger makes contact with the flywheel end face
of the crankshaft.
2.Push the crankshaft firmly towards the gear end
of the engine and zero the indicator.
3.Push the crankshaft firmly towards the flywheel
end of the engine and check the end float; this
should be:
TS/TR1: 0.178-0.305mm (0.007-0.012in)
TS/TR/TX2,3: 0.229-0.356mm (0.009-0.014in).
4.If the end float is incorrect adjust by the addition or
removal of 0.127 or 0.254mm (0.005 or 0.010in)
shims.
Shims are fitted to the flywheel end main bearing
housing.
Figure 2.44.3 Centre Bearing Dowel
CAPTION
Ensure the dowel has gone fully home and that it is not
abutting the main bearing housing shoulder or capscrew
recess.
T SERIES ENGINES WORKSHOP MANUAL
47
also the connecting rod bearings.
d.Examine all bearing surfaces for scoring and
wear.
e.Renew the split thrust washers if they are
damaged or worn.
Refitting the Crankshaft
1.If necessary fit new bearing shells to the main
bearing housing, centre bearing housing/s and
the gear end crankcase main bearing.
The grooved bearing shell must be to the top and
the oil holes must be lined up.
2.Re-assemble the centre main bearing housing/s
around the crankshaft ensuring the socket screws
are tightened.
Ensure 'Flywheel End' on the housing halves is
correctly located before assembly.
3.Apply grease to the steel side of the thrust
washers and place them in the gear end of the
crankcase with the tab correctly located and the
copper face towards the crankshaft.
4.Offer up the crankshaft, lining up the centre
bearing to ensure each dowel hole is in the
correct position.
Take special care when passing the crankshaft
through the gear end bearing as it is quite easy to
score the bearing shell with the crankshaft.
5.With the fuel pump bolt inserted in the centre
bearing dowel (B), insert the dowel through
the crankcase wall and into the centre bearing
housing.
Figure 2.44.3 Centre Bearing Dowel
CAUTION
Ensure the dowel has gone fully home and
that it is not abutting the main bearing housing
shoulder or capscrew recess.
Figure 2.44.4 Dowel Hole Alignment
A - Dowel Hole
B - Capscrew Head Recess
6.Replace the locating dowel securing screw and
torque load it to 20.5Nm (15.0lbf ft).
7.Remove the fuel pump bolt from the dowel.
8.Refit the crankshaft balance weights, with the
stamped part numbers facing each other, and
torque load to 57.0Nm (42.0lbf ft).
Early balance weights only have one retaining
screw.
9.Lock the bolts by preening them with a centre
punch.
10.Replace the rear main bearing housing.
11.Check that the crankshaft is free to rotate.
12.Fit the Woodruff key at the gear end.
13.Heat the crankshaft pinion to straw yellow and
fit it to the crankshaft without delay ensuring the
'0' mark is facing outwards.
Insufficient heat or delay in fitting could well
cause the pinion to become jammed on the
crankshaft, whereas overheating may cause
softening of the pinion.
14.Check the crankshaft end float.
2.45 CRANKSHAFT END FLOAT
1.Set a dial test indicator so that the actuating
plunger makes contact with the flywheel end face
of the crankshaft.
2.Push the crankshaft firmly towards the gear end
of the engine and zero the indicator.
3.Push the crankshaft firmly towards the flywheel
end of the engine and check the end float; this
should be:
TS/TR1: 0.178-0.305mm (0.007-0.012in)
TS/TR/TX2,3: 0.229-0.356mm (0.009-0.014in).
4.If the end float is incorrect adjust by the addition or
removal of 0.127 or 0.254mm (0.005 or 0.010in)
shims.
Shims are fitted to the flywheel end main bearing
housing.
Figure 2.44.4 Dowel Hole Alignment
A - Dowel Hole; B - Capscrew Head Recess
6. Replace the locating dowel securing screw and torque load
it to 20.5Nm (15.0lbf ft).
7. Remove the fuel pump bolt from the dowel.
8. Refit the crankshaft balance weights, with the stamped
part numbers facing each other, and torque load to 57.0Nm
(42.0lbf ft).
Early balance weights only have one retaining screw.
9. Lock the bolts by preening them with a centre punch.
10. Replace the rear main bearing housing.
11. Check that the crankshaft is free to rotate.
12. Fit the Woodruff key at the gear end.
13. Heat the crankshaft pinion to straw yellow and fit it to the
crankshaft without delay ensuring the '0' mark is facing
outwards.
Insufficient heat or delay in fitting could well cause the
pinion to become jammed on the crankshaft, whereas
overheating may cause softening of the pinion.
14. Check the crankshaft end float.
Summary of Contents for TS/TR1
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