New Holland 667TA/EBF, Repair Manual

Page: 113 / 150

2-95
87519804 NA Issued 11-06 Bur
CHAPTER 2 - 667TA ENGINE OVERHAUL
ENGINE REPAIR MANUAL
BEARINGS
STEP 77
Verify that the bearings in the connecting rod small-
end is not loosened and does not show traces of
scoring or seizing. If it does replace them.
Removing and reassembling are carried out with the
same suitable driver.
When driving the bearings, make sure that the holes
a l l ow i n g o i l to f l ow o n t o th e b e a r i n g a n d th e
connecting rod small- end correspond to each other.
Use a reamer to reface the bearing to obtain the
required diameter.
CHECKING THE CONNECTING RODS
STEP 78
BS06K305 Figure 2-178
Check the centerlines of the connecting rods (1) are
parallel using proper device (5) as follows.
•
Install connecting rod (1) on tool (5) spindle, then
secure it by means of bolt (4).
•
Place spindle (3) on V-blocks by putting
connecting rod (1) on stop bar (2).
CHECKING THE TWISTING
STEP 79
BS06K306 Figure 2-179
Check connecting rod torsion (5) by comparing two
points (A and B) of pin (3) on the horizontal plane of
the connecting rod axis.
Pla ce comp arator (2) sup por t (1) so tha t th e
comparator is preloaded by approximately 0.5mm
(.02 in.) on pin (3) at point A, then set comparator (2)
to zero. Move spindle (4) with connecting rod (5),
then compare the deviation (if any) on opposite side
(B) of pin (3). The difference between A and B must
not be greater than 0.08mm (0.003 in.).
1
4
2
3
5
2
3
4
1
A
B