New Holland 40 Series Repair Manual page 47

- - - - - - - - - - - - - - C H A P T E R 1 - - - - - - - - - - - - - -
FLYWHEEL REMOVAL
1. To gain access to the flywheel separate
the engine to transmission. Refer to
"SEPARATING THE UNIT".
Flywheel Runout
1. Dial Indicator 2. Flywheel
2. Prior to removal and using a dial indicator,
rotate the flywheel, Figure 54, and meas-
ure to specification 0.005 in (0.127mm)
Total Indicator Reading. If not to specifi-
cation check crankshaft to flywheel seat-
ing.
Inspection and Repair
1. Inspect the flywheel ring gear and if dam-
aged renew in the following manner:-
Cut old ring gear free from the flywheel.
Clean the mating surfaces of the new ring
gear and flywheel.
2. Use temperature indicating crayons to
mark the side face of the ring gear in six
equal places, mark with a 204°C (400°F)
crayon at a point 0.5 in (13mm) below the
root of the teeth and mark with a 212°C
(450°) crayon at a point just below root of
the teeth.
29
3. Use an oxy-acetylene torch with a tip size
of No.2 maximum and direct the flame
against the internal face of the gear.
4. Quickly place the hot gear on the fly-
wheel, with flat face against the shoulder
on the flywheel. The gear to flywheel
runout should be checked using a dial in-
dicator and should not exceed a Total In-
dicator Reading of 0.025 in (0.63mm).
Installation
1. Clean the crankshaft rear flange and mat-
ing surface of the flywheel and install the
flywheel, torque the bolts to:
145 lbf ft (197N m) 20 kgf m.
REAR COVER PLATE REMOVAL
55
Rear Cover Plate Removal
1. Retaining Bolts
R1-52 !;(i
1. To gain access to the engine oil pump,
camshaft gear or end of crankshaft, re-
move the oil pan as previously described
and the rear cover, Figure 55, in the fol-
lowing manner:
Split tractor see "SEPARATING THE UNIT"
2. With rear of engine exposed loosen and
remove the 12 attaching bolts and gently
pry off cover plate.