New Holland 667TA/EBF, Repair Manual

Page: 108 / 150

2-90
Issued 11-06 Bur 87519804 NA
CHAPTER 2 - 667TA ENGINE OVERHAUL
ENGINE REPAIR MANUAL
STEP 63
BS06K287 Figure 2-160
Fasten pre-lubricated bolts (1) by tightening them in
three phases.
•
1st phase with a torque wrench at 44 - 56 Nm
(32.5 - 41.3 lbf ft.).
•
2nd phase with a torque wrench at 74 -86 Nm
(54.6 -63.4 lbf ft.).
STEP 64
BS06K288
Figure 2-161
•
3rd phase with a suitable tool (1) placed as shown,
tighten bolts (2) further to an angle of 90° ± 5°
STEP 65
BS06K289 Figure 2-162
Take the caps off the supports.
The play between the main bearings and the pins
c a n b e fo u n d by c o m p a r i n g t h e w i d t h o f t h e
calibrated wire (2) at the narrowest point with the
scale on the envelope (1) containing the calibrated
wire.
The numbers on the scale indicate the backlash in
mm. (inches).
Replace the half bearings and repeat the check if a
different backlash value is found. Once the specified
backlash is obtained, lubricate the main bearings and
install the supports by tightening the fastening bolts
as previously described.
CHECKING CRANKSHAFT SHOULDER PLAY
STEP 66
BS06K290 Figure 2-163
The shoulder play is checked by placing a magnetic
comparator (2) on the drive shaft (3) as shown in the
figure: normal assembly play is 0.068 to 0.410 mm
(0.0027 to 0.0161 in.).
If play falls out of the window, replace the main thrust
half bearings of the second last rear support (1) and
repeat the clearance check between output shaft
pins and main half bearings.
1
1
2
1
2
1
3
2