New Holland 40 Series Repair Manual page 49

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Measuring Crankshaft Seal Runout
1. Crankshaft Seal 2. Dial Indicator
6. With new crankshaft seal installed, place
a dial indicator on the end of the crank-
shaft and ensure seal runout is within
0.020 in (0.51 mm) Total Indicator Read-
ing, Figure 59.
OIL PUMP REMOVAL
NOTE:
The oil pump can only be removed
with the engine split from the transmission
and the flywheel, back plate, engine oil pan
and oil pump tube removed.
60
R1-55
!iG
Engine Oil Pump
1. Gear Backlash Measurement
2. Pump to Block Mounting Bolts
1 . Prior to pump removal check pump gear
to camshaft gear backlash does not ex-
ceed, 0.016--0.022 in (0.40--0.56mm),
Figure 60.
2. Loosen and remove the camshaft gear to
expose the oil pump, detach the 3 pump
mounting bolts (this is the same for both 4
and 6 cylinder models), and withdraw the
pump from the block, Figure 60.
31
Disassembly
61
R1-56
!iG
Oil Pump Disassembly
1. Retaining Bolts
2. Retaining Bolts 6Cyl
3. 'O' Ring lntake Port
4. 'O' Ring Outlet Port
1 Loosen and remove the pump face plate
to body bolts. There are 3 off in the 4cylin-
der pump face and 4 off, in the 6 cylinder
pump face. Disassemble the pump and
discard the 'O' rings, Figure 61.
Inspection and Repair
1 . Wash all parts in a suitable solvent and in-
spect inside of pump plate and body, for
excessive wear or damage. If visually
okay check in the following manner.
62
2
o o.-::===:::::::.-
: ~
0
0
Measuring Oil Pump Rotor
1
R1-57
S(i
1 . Rotor Body 3. Straight Edge
2. Outer Rotor 4. Feeler Gauge
2. Invert pump plate/rotor assembly and
place outer rotor over inner rotor. Placing
a ruler across top of both, slide a feeler
gauge between ruler and inner rotor to
0.001-0.0035 in (0.025-0.089mm),
Figure 62.