TS, TR, TX engines workshop manual
16
4. Slacken the injector clamp.
5. If more than one head is being removed mark each one with
chalk to identify their respective cylinders.
6. Remove the cylinder head securing nuts diagonally and lift
off the head.
7. Ensure the TS/TR cylinder head clearance shims and gaskets
from each cylinder are placed with their respective cylinder
heads for correct re-assembly.
8. Remove the air baffle/s taking careful note of their position
for re-assembly.
With the cylinder head in position the air baffle/s may be
removed by removing the split pin.
9. Remove the push rods and tubes and place them with
their respective cylinder head if further dismantling is
anticipated.
10. To prevent movement of the barrel if the crankshaft is
turned place a suitable length of tube over one holding
down stud of the cylinder secured by fitting a cylinder head
nut finger tight.
Refitting a Cylinder Head
The TS and TR cylinder head nuts, top threads of the studs and
the area of the top plate in contact with the nuts should be
lightly coated with Wellseal.
All cylinder head nuts should be fitted with the machined grade
symbol facing upwards to ensure a good seal between the nut
and the head.
It is strongly recommended that cylinder head nuts and push
rod seals are replaced at every major overhaul.
1. Renew or replace the push rod seals in the cylinder head
and crankcase.
2. Lightly coat both ends of the push rod tubes with Hellerine
rubber lubricant and replace them taking care to ensure they
are centralised in their rubber seals.
3. Replace the push rods in their original positions.
4. Replace the cylinder head.
Great care must be taken not to trap the TS or TR shims on
the cylinder barrel spigot.
5. Replace the head nuts finger tight only.
The inlet and exhaust flanges of all cylinder heads must be
lined up with a straight edge and any gap along the straight
edge must not exceed 0.2mm (0.008in).
Alternatively fit a manifold before tightening down the
cylinder heads.
6. Tighten down the cylinder head nuts diagonally and evenly
to a final torque of:
TS/TR - 68.ONm (50.0lbf ft)
TX - 61.ONm (45.0lbf ft)
7. On TX engines ensure the valve stem caps are in position.
8. Replace the injector and the injector clamp.
9. Check and adjust the valve rocker clearances.
10. Check and adjust the decompressor, if fitted.
11. Replace the cylinder head cover and lifting eye.
12. Replace the baffle between the cylinder barrels with the
spring clip on the manifold side
13. Replace the air cowling and manifolds.
14. Replace the valve rocker lubricating oil feed pipe, fitting a
new union and two washers to the cylinder head.
2.12 Cylinder Head Clearance
TS and TR Engines
1. With the head removed smear a very small amount of high
melting point grease in the recess on the head where the
shims seat and also the side of the recess.
2. Lightly grease both sides of each shim in turn and place them
in the recess.
3. Place the gasket in the recess on top of the shims.
4. From two 50mm x 1.6mm (2.00 x 0.063in) diameter pieces
of lead wire or soft, but not multicore, solder form two 'U'
shaped symmetrical loops.
5. Twist the open tails of each loop to form four or five coils.
6. Refer to 'Figure 2.12.1' and using a very small amount of
grease place the two pieces of wire on the piston crown.
The wires must be at each side of the gudgeon pin axis and
90° to the centre line and just touching the cylinder bore.
Care must be taken to ensure the wires are not placed over
any markings on the piston crown.
T SERIES ENGINES WORKSHOP MANUAL
17
Removal of a Cylinder Head
1.Remove the cylinder head cover.
2.Remove the valve rocker lubricating oil feed pipe
by removing the oil swivel plugs from the cylinder
head and crankcase.
3.Remove the fuel pump to injector pipe.
4. Slacken the injector clamp.
5.If more than one head is being removed mark
each one with chalk to identify their respective
cylinders.
6.Remove the cylinder head securing nuts
diagonally and lift off the head.
7.Ensure the TS/TR cylinder head clearance shims
and gaskets from each cylinder are placed with their
respective cylinder heads for correct re-assembly.
8.Remove the air baffle/s taking careful note of
their position for re-assembly.
With the cylinder head in position the air baffle/s
may be removed by removing the split pin.
9.Remove the push rods and tubes and place
them with their respective cylinder head if further
dismantling is anticipated.
10.To prevent movement of the barrel if the
crankshaft is turned place a suitable length of tube
over one holding down stud of the cylinder secured
by fitting a cylinder head nut finger tight.
Refitting a Cylinder Head
The TS and TR cylinder head nuts, top threads of
the studs and the area of the top plate in contact with
the nuts should be lightly coated with Wellseal.
All cylinder head nuts should be fitted with the
machined grade symbol facing upwards to ensure
a good seal between the nut and the head.
It is strongly recommended that cylinder head nuts
and push rod seals are replaced at every major
overhaul.
1.Renew or replace the push rod seals in the
cylinder head and crankcase.
2.Lightly coat both ends of the push rod tubes
with Hellerine rubber lubricant and replace them
taking care to ensure they are centralised in their
rubber seals.
3.Replace the push rods in their original positions.
4.Replace the cylinder head.
Great care must be taken not to trap the TS or TR
shims on the cylinder barrel spigot.
5.Replace the head nuts finger tight only.
The inlet and exhaust flanges of all cylinder
heads must be lined up with a straight edge and
any gap along the straight edge must not exceed
0.2mm (0.008in).
Alternatively fit a manifold before tightening down
the cylinder heads.
6.Tighten down the cylinder head nuts diagonally
and evenly to a final torque of:
TS/TR - 68.ONm (50.0lbf ft).
TX - 61.ONm (45.0lbf ft).
7.On TX engines ensure the valve stem caps are
in position.
8.Replace the injector and the injector clamp.
9.Check and adjust the valve rocker clearances.
10.Check and adjust the decompressor, if fitted.
11.Replace the cylinder head cover and lifting
eye.
12.Replace the baffle between the cylinder barrels
with the spring clip on the manifold side
13.Replace the air cowling and manifolds.
14.Replace the valve rocker lubricating oil feed
pipe, fitting a new union and two washers to the
cylinder head.
2.12 CYLINDER HEAD CLEARANCE
TS and TR Engines
1.With the head removed smear a very small
amount of high melting point grease in the recess
on the head where the shims seat and also the
side of the recess.
2.Lightly grease both sides of each shim in turn
and place them in the recess.
3.Place the gasket in the recess on top of the
shims.
4.From two 50mm x 1.6mm (2.00 x 0.063in) diameter
pieces of lead wire or soft, but not multicore,
solder form two 'U' shaped symmetrical loops.
5.Twist the open tails of each loop to form four or
five coils.
6.Refer to 'Figure 2.12.1' and using a very small
amount of grease place the two pieces of wire on
the piston crown.
The wires must be at each side of the gudgeon pin
axis and 90° to the centre line and just touching
the cylinder bore.
Care must be taken to ensure the wires are not
placed over any markings on the piston crown.
Figure 2.12.1 Cylinder Head Clearance
Figure 2.12.1 Cylinder Head Clearance
7. Replace the cylinder head.
8.Replace and torque the cylinder head nuts to 68.0Nm
(50.0lbf ft).
9. Turn the piston twice past TDC.
10. Remove the cylinder head and measure the thickness of
the lead, this should be:
TS - 0.813-0.889mm (0.032-0.035in)
TR - 0.889-0.965mm (0.035-0.038in)
If this measurement is not correct it can be adjusted by
adding or removing 0.07mm or 0.25mm (0.003 or 0.010in)
thick shims placed between the cylinder head and the
gasket.
11. Replace the cylinder head.
12. Re-check the head clearance.
TX Engines
The cylinder head clearance is maintained by 0.07mm, 0.13mm
or 0.38mm (0.003in, 0.005in, 0.015in) metal shims placed
between the cylinder barrel and crankcase.
1. From two 50mm x 1.6mm (2.00 x 0.063in) diameter pieces
of lead wire or soft, but not multicore, solder form two 'U'
shaped symmetrical loops.
2. Twist the open tails of each loop to form four or five coils.
Summary of Contents for TS/TR1
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