TS, TR, TX engines workshop manual
44
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.
Notes:
On current engines 0.127 and 0.254mm (0.005 and 0.010in) aluminium shims control
the endfloat and are assembled as given in "02.43 Main Bearing Housing".
Early TS and TR engines may have paper and 0.076mm (0.003in) metal shims as-
sembled dry, or with Wellseal.
5. After the bearing housing has been replaced the housing
bolts are torqued to 27.0Nm (20.0lbf ft).
2.46 Checking Bearing Clearance
1. Place a piece of the correct size 'Plastigauge' approximately
6.35mm (0.25in) off-centre across the full width of one
bearing shell.
T SERIES ENGINES WORKSHOP MANUAL
48
Notes:
On current engines 0.127 and 0.254mm (0.005
and 0.010in) aluminium shims control the
endfloat and are assembled as given in "02.43
Main Bearing Housing".
Early TS and TR engines may have paper and
0.076mm (0.003in) metal shims assembled dry,
or with Wellseal.
5.After the bearing housing has been replaced the
housing bolts are torqued to 27.0Nm (20.0lbf ft).
2.46 CHECKING BEARING
CLEARANCE
1.Place a piece of the correct size 'Plastigauge'
approximately 6.35mm (0.25in) off-centre across
the full width of one bearing shell.
Figure 2.46.1 Checking Bearing Clearance
2.Replace the bearing and torque the nuts.
3.Remove the bearing shell and use the scale to
check the width of the flattened 'Plastigauge';
the width at the widest point establishes the
minimum clearance and at the narrowest point
the maximum clearance.
The difference between the two readings is the
journal to bearing clearance.
CAUTION
Care must be taken to ensure the crankshaft
is not turned when the Plastigauge is in place,
and all traces of it must be removed before final
assembly of the bearing.
2.47 CRANKSHAFT MAIN BEARINGS
Main Bearing Tool 393235
Figure 2.47.1 Main Bearing Tool
Note:
This tool replaces 317-50006; both are
described and either can be used. The legend
numbers referred to in the illustration and
text are also marked on the individual tool
components.
Gear End Main Bearing Removal
1.Fit the nut (2) onto the screw (1).
2.Place both dollies (5, 6) onto the screw with the
tapered ends outwards and the large dolly (6)
next to the nut (2).
3.Insert the assembly into the main bearing from
inside the crankcase.
4.Fit the bridge (8) followed by the thrust nut (9)
onto the screw (1).
5.Locate the bridge against the outside of the
crankcase
6.Using the correct size of spanner tighten the
thrust nut (9) until the main bearing shells are
removed from the crankcase.
Gear End Main Bearing Replacement
1.Remove the thrustwashers from the crankcase.
2.Fit the nut (2) and bridge (8) onto the screw (1).
Ensure the tang on the nut is correctly located into
the slot on the bridge.
3.Place both halves of the new bearing into the
sleeve (3) from the end opposite the locating
spigots.
Align the ends of the new bearings with the letter
'G' on the sleeve and ensure the bearing oil
hole is correctly lined up with the '0' mark on the
sleeve face.
4.Place the dolly (6) with the taper outwards into
the spigot end of the sleeve (3).
5.Fit the driver (4) into the other end of the sleeve,
Figure 2.46.1 Checking Bearing Clearance
2. Replace the bearing and torque the nuts.
3. Remove the bearing shell and use the scale to check the width
of the flattened 'Plastigauge'; the width at the widest point
establishes the minimum clearance and at the narrowest
point the maximum clearance.
The difference between the two readings is the journal to
bearing clearance.
CAPTION
Care must be taken to ensure the crankshaft is not
turned when the Plastigauge is in place, and all traces of
it must be removed before final assembly of the bearing.
2.47 Crankshaft Main Bearings
Main Bearing Tool 393235
T SERIES ENGINES WORKSHOP MANUAL
48
Notes:
On current engines 0.127 and 0.254mm (0.005
and 0.010in) aluminium shims control the
endfloat and are assembled as given in "02.43
Main Bearing Housing".
Early TS and TR engines may have paper and
0.076mm (0.003in) metal shims assembled dry,
or with Wellseal.
5.After the bearing housing has been replaced the
housing bolts are torqued to 27.0Nm (20.0lbf ft).
2.46 CHECKING BEARING
CLEARANCE
1.Place a piece of the correct size 'Plastigauge'
approximately 6.35mm (0.25in) off-centre across
the full width of one bearing shell.
Figure 2.46.1 Checking Bearing Clearance
2.Replace the bearing and torque the nuts.
3.Remove the bearing shell and use the scale to
check the width of the flattened 'Plastigauge';
the width at the widest point establishes the
minimum clearance and at the narrowest point
the maximum clearance.
The difference between the two readings is the
journal to bearing clearance.
CAUTION
Care must be taken to ensure the crankshaft
is not turned when the Plastigauge is in place,
and all traces of it must be removed before final
assembly of the bearing.
2.47 CRANKSHAFT MAIN BEARINGS
Main Bearing Tool 393235
Figure 2.47.1 Main Bearing Tool
Note:
This tool replaces 317-50006; both are
described and either can be used. The legend
numbers referred to in the illustration and
text are also marked on the individual tool
components.
Gear End Main Bearing Removal
1.Fit the nut (2) onto the screw (1).
2.Place both dollies (5, 6) onto the screw with the
tapered ends outwards and the large dolly (6)
next to the nut (2).
3.Insert the assembly into the main bearing from
inside the crankcase.
4.Fit the bridge (8) followed by the thrust nut (9)
onto the screw (1).
5.Locate the bridge against the outside of the
crankcase
6.Using the correct size of spanner tighten the
thrust nut (9) until the main bearing shells are
removed from the crankcase.
Gear End Main Bearing Replacement
1.Remove the thrustwashers from the crankcase.
2.Fit the nut (2) and bridge (8) onto the screw (1).
Ensure the tang on the nut is correctly located into
the slot on the bridge.
3.Place both halves of the new bearing into the
sleeve (3) from the end opposite the locating
spigots.
Align the ends of the new bearings with the letter
'G' on the sleeve and ensure the bearing oil
hole is correctly lined up with the '0' mark on the
sleeve face.
4.Place the dolly (6) with the taper outwards into
the spigot end of the sleeve (3).
5.Fit the driver (4) into the other end of the sleeve,
Figure 2.47.1 Main Bearing Tool
Note:
This tool replaces 317-50006; both are described and either can be used. The legend
numbers referred to in the illustration and text are also marked on the individual
tool components.
Gear End Main Bearing Removal
1. Fit the nut (2) onto the screw (1).
2. Place both dollies (5, 6) onto the screw with the tapered ends
outwards and the large dolly (6) next to the nut (2).
3. Insert the assembly into the main bearing from inside the
crankcase.
4. Fit the bridge (8) followed by the thrust nut (9) onto the
screw (1).
5. Locate the bridge against the outside of the crankcase
6. Using the correct size of spanner tighten the thrust nut
(9) until the main bearing shells are removed from the
crankcase.
Gear End Main Bearing Replacement
1. Remove the thrustwashers from the crankcase.
2. Fit the nut (2) and bridge (8) onto the screw (1).
Ensure the tang on the nut is correctly located into the slot
on the bridge.
3. Place both halves of the new bearing into the sleeve (3) from
the end opposite the locating spigots.
Align the ends of the new bearings with the letter 'G' on the
sleeve and ensure the bearing oil hole is correctly lined up
with the '0' mark on the sleeve face.
4. Place the dolly (6) with the taper outwards into the spigot
end of the sleeve (3).
5. Fit the driver (4) into the other end of the sleeve, ensuring the
guide dowel is positively located in the slot in the sleeve.
6. Fit the assembly onto the crankcase from the outside making
sure the forked sleeve spigot is fully located on the crankcase
lower end cover dowel.
7. Place the screw assembly inside the crankcase and fit it to
the sleeve assembly.
8. Place the depth plate (7) onto the screw with the 'G' face next
to the driver (4).
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